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opm-simulators/opm/autodiff/BlackoilModelBase_impl.hpp
Tor Harald Sandve 065b2f595c Add support for NNC in the simulator 
1) NNC are added the grad, div and average operators
2) NNC are added the upwindSelector
3) NNC transmissibilities are added to the face transmissibilities
2015-07-09 12:15:59 +02:00

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/*
Copyright 2013, 2015 SINTEF ICT, Applied Mathematics.
Copyright 2014, 2015 Dr. Blatt - HPC-Simulation-Software & Services
Copyright 2014, 2015 Statoil ASA.
Copyright 2015 NTNU
Copyright 2015 IRIS AS
This file is part of the Open Porous Media project (OPM).
OPM is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OPM is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with OPM. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef OPM_BLACKOILMODELBASE_IMPL_HEADER_INCLUDED
#define OPM_BLACKOILMODELBASE_IMPL_HEADER_INCLUDED
#include <opm/autodiff/BlackoilModelBase.hpp>
#include <opm/autodiff/AutoDiffBlock.hpp>
#include <opm/autodiff/AutoDiffHelpers.hpp>
#include <opm/autodiff/GridHelpers.hpp>
#include <opm/autodiff/BlackoilPropsAdInterface.hpp>
#include <opm/autodiff/GeoProps.hpp>
#include <opm/autodiff/WellDensitySegmented.hpp>
#include <opm/core/grid.h>
#include <opm/core/linalg/LinearSolverInterface.hpp>
#include <opm/core/linalg/ParallelIstlInformation.hpp>
#include <opm/core/props/rock/RockCompressibility.hpp>
#include <opm/core/utility/ErrorMacros.hpp>
#include <opm/core/utility/Exceptions.hpp>
#include <opm/core/utility/Units.hpp>
#include <opm/core/well_controls.h>
#include <opm/core/utility/parameters/ParameterGroup.hpp>
#include <opm/parser/eclipse/EclipseState/EclipseState.hpp>
#include <cassert>
#include <cmath>
#include <iostream>
#include <iomanip>
#include <limits>
//#include <fstream>
// A debugging utility.
#define OPM_AD_DUMP(foo) \
do { \
std::cout << "==========================================\n" \
<< #foo ":\n" \
<< collapseJacs(foo) << std::endl; \
} while (0)
#define OPM_AD_DUMPVAL(foo) \
do { \
std::cout << "==========================================\n" \
<< #foo ":\n" \
<< foo.value() << std::endl; \
} while (0)
#define OPM_AD_DISKVAL(foo) \
do { \
std::ofstream os(#foo); \
os.precision(16); \
os << foo.value() << std::endl; \
} while (0)
namespace Opm {
typedef AutoDiffBlock<double> ADB;
typedef ADB::V V;
typedef ADB::M M;
typedef Eigen::Array<double,
Eigen::Dynamic,
Eigen::Dynamic,
Eigen::RowMajor> DataBlock;
namespace detail {
std::vector<int>
buildAllCells(const int nc)
{
std::vector<int> all_cells(nc);
for (int c = 0; c < nc; ++c) { all_cells[c] = c; }
return all_cells;
}
template <class PU>
std::vector<bool>
activePhases(const PU& pu)
{
const int maxnp = Opm::BlackoilPhases::MaxNumPhases;
std::vector<bool> active(maxnp, false);
for (int p = 0; p < pu.MaxNumPhases; ++p) {
active[ p ] = pu.phase_used[ p ] != 0;
}
return active;
}
template <class PU>
std::vector<int>
active2Canonical(const PU& pu)
{
const int maxnp = Opm::BlackoilPhases::MaxNumPhases;
std::vector<int> act2can(maxnp, -1);
for (int phase = 0; phase < maxnp; ++phase) {
if (pu.phase_used[ phase ]) {
act2can[ pu.phase_pos[ phase ] ] = phase;
}
}
return act2can;
}
} // namespace detail
template <class Grid, class Implementation>
BlackoilModelBase<Grid, Implementation>::
BlackoilModelBase(const ModelParameters& param,
const Grid& grid ,
const BlackoilPropsAdInterface& fluid,
const DerivedGeology& geo ,
const RockCompressibility* rock_comp_props,
const Wells* wells,
const NewtonIterationBlackoilInterface& linsolver,
Opm::EclipseStateConstPtr eclState,
const bool has_disgas,
const bool has_vapoil,
const bool terminal_output)
: grid_ (grid)
, fluid_ (fluid)
, geo_ (geo)
, rock_comp_props_(rock_comp_props)
, wells_ (wells)
, linsolver_ (linsolver)
, active_(detail::activePhases(fluid.phaseUsage()))
, canph_ (detail::active2Canonical(fluid.phaseUsage()))
, cells_ (detail::buildAllCells(Opm::AutoDiffGrid::numCells(grid)))
, ops_ (grid, eclState)
, wops_ (wells_)
, has_disgas_(has_disgas)
, has_vapoil_(has_vapoil)
, param_( param )
, use_threshold_pressure_(false)
, rq_ (fluid.numPhases())
, phaseCondition_(AutoDiffGrid::numCells(grid))
, isRs_(V::Zero(AutoDiffGrid::numCells(grid)))
, isRv_(V::Zero(AutoDiffGrid::numCells(grid)))
, isSg_(V::Zero(AutoDiffGrid::numCells(grid)))
, residual_ ( { std::vector<ADB>(fluid.numPhases(), ADB::null()),
ADB::null(),
ADB::null() } )
, terminal_output_ (terminal_output)
{
#if HAVE_MPI
if ( terminal_output_ ) {
if ( linsolver_.parallelInformation().type() == typeid(ParallelISTLInformation) )
{
const ParallelISTLInformation& info =
boost::any_cast<const ParallelISTLInformation&>(linsolver_.parallelInformation());
// Only rank 0 does print to std::cout if terminal_output is enabled
terminal_output_ = (info.communicator().rank()==0);
}
}
#endif
}
template <class Grid, class Implementation>
void
BlackoilModelBase<Grid, Implementation>::
prepareStep(const double dt,
ReservoirState& reservoir_state,
WellState& /* well_state */)
{
pvdt_ = geo_.poreVolume() / dt;
if (active_[Gas]) {
updatePrimalVariableFromState(reservoir_state);
}
}
template <class Grid, class Implementation>
void
BlackoilModelBase<Grid, Implementation>::
afterStep(const double /* dt */,
ReservoirState& /* reservoir_state */,
WellState& /* well_state */)
{
// Does nothing in this model.
}
template <class Grid, class Implementation>
int
BlackoilModelBase<Grid, Implementation>::
sizeNonLinear() const
{
return residual_.sizeNonLinear();
}
template <class Grid, class Implementation>
int
BlackoilModelBase<Grid, Implementation>::
linearIterationsLastSolve() const
{
return linsolver_.iterations();
}
template <class Grid, class Implementation>
bool
BlackoilModelBase<Grid, Implementation>::
terminalOutputEnabled() const
{
return terminal_output_;
}
template <class Grid, class Implementation>
int
BlackoilModelBase<Grid, Implementation>::
numPhases() const
{
return fluid_.numPhases();
}
template <class Grid, class Implementation>
void
BlackoilModelBase<Grid, Implementation>::
setThresholdPressures(const std::vector<double>& threshold_pressures_by_face)
{
const int num_faces = AutoDiffGrid::numFaces(grid_);
if (int(threshold_pressures_by_face.size()) != num_faces) {
OPM_THROW(std::runtime_error, "Illegal size of threshold_pressures_by_face input, must be equal to number of faces.");
}
use_threshold_pressure_ = true;
// Map to interior faces.
const int num_ifaces = ops_.internal_faces.size();
threshold_pressures_by_interior_face_.resize(num_ifaces);
for (int ii = 0; ii < num_ifaces; ++ii) {
threshold_pressures_by_interior_face_[ii] = threshold_pressures_by_face[ops_.internal_faces[ii]];
}
}
template <class Grid, class Implementation>
BlackoilModelBase<Grid, Implementation>::ReservoirResidualQuant::ReservoirResidualQuant()
: accum(2, ADB::null())
, mflux( ADB::null())
, b ( ADB::null())
, dh ( ADB::null())
, mob ( ADB::null())
{
}
template <class Grid, class Implementation>
BlackoilModelBase<Grid, Implementation>::
WellOps::WellOps(const Wells* wells)
: w2p(),
p2w()
{
if( wells )
{
w2p = M(wells->well_connpos[ wells->number_of_wells ], wells->number_of_wells);
p2w = M(wells->number_of_wells, wells->well_connpos[ wells->number_of_wells ]);
const int nw = wells->number_of_wells;
const int* const wpos = wells->well_connpos;
typedef Eigen::Triplet<double> Tri;
std::vector<Tri> scatter, gather;
scatter.reserve(wpos[nw]);
gather .reserve(wpos[nw]);
for (int w = 0, i = 0; w < nw; ++w) {
for (; i < wpos[ w + 1 ]; ++i) {
scatter.push_back(Tri(i, w, 1.0));
gather .push_back(Tri(w, i, 1.0));
}
}
w2p.setFromTriplets(scatter.begin(), scatter.end());
p2w.setFromTriplets(gather .begin(), gather .end());
}
}
template <class Grid, class Implementation>
void
BlackoilModelBase<Grid, Implementation>::makeConstantState(SolutionState& state) const
{
// HACK: throw away the derivatives. this may not be the most
// performant way to do things, but it will make the state
// automatically consistent with variableState() (and doing
// things automatically is all the rage in this module ;)
state.pressure = ADB::constant(state.pressure.value());
state.temperature = ADB::constant(state.temperature.value());
state.rs = ADB::constant(state.rs.value());
state.rv = ADB::constant(state.rv.value());
const int num_phases = state.saturation.size();
for (int phaseIdx = 0; phaseIdx < num_phases; ++ phaseIdx) {
state.saturation[phaseIdx] = ADB::constant(state.saturation[phaseIdx].value());
}
state.qs = ADB::constant(state.qs.value());
state.bhp = ADB::constant(state.bhp.value());
assert(state.canonical_phase_pressures.size() == static_cast<std::size_t>(Opm::BlackoilPhases::MaxNumPhases));
for (int canphase = 0; canphase < Opm::BlackoilPhases::MaxNumPhases; ++canphase) {
ADB& pp = state.canonical_phase_pressures[canphase];
pp = ADB::constant(pp.value());
}
}
template <class Grid, class Implementation>
typename BlackoilModelBase<Grid, Implementation>::SolutionState
BlackoilModelBase<Grid, Implementation>::variableState(const ReservoirState& x,
const WellState& xw) const
{
std::vector<V> vars0 = asImpl().variableStateInitials(x, xw);
std::vector<ADB> vars = ADB::variables(vars0);
return asImpl().variableStateExtractVars(x, asImpl().variableStateIndices(), vars);
}
template <class Grid, class Implementation>
std::vector<V>
BlackoilModelBase<Grid, Implementation>::variableStateInitials(const ReservoirState& x,
const WellState& xw) const
{
assert(active_[ Oil ]);
const int np = x.numPhases();
std::vector<V> vars0;
// p, Sw and Rs, Rv or Sg is used as primary depending on solution conditions
// and bhp and Q for the wells
vars0.reserve(np + 1);
variableReservoirStateInitials(x, vars0);
variableWellStateInitials(xw, vars0);
return vars0;
}
template <class Grid, class Implementation>
void
BlackoilModelBase<Grid, Implementation>::variableReservoirStateInitials(const ReservoirState& x, std::vector<V>& vars0) const
{
using namespace Opm::AutoDiffGrid;
const int nc = numCells(grid_);
const int np = x.numPhases();
// Initial pressure.
assert (not x.pressure().empty());
const V p = Eigen::Map<const V>(& x.pressure()[0], nc, 1);
vars0.push_back(p);
// Initial saturation.
assert (not x.saturation().empty());
const DataBlock s = Eigen::Map<const DataBlock>(& x.saturation()[0], nc, np);
const Opm::PhaseUsage pu = fluid_.phaseUsage();
// We do not handle a Water/Gas situation correctly, guard against it.
assert (active_[ Oil]);
if (active_[ Water ]) {
const V sw = s.col(pu.phase_pos[ Water ]);
vars0.push_back(sw);
}
if (active_[ Gas ]) {
// define new primary variable xvar depending on solution condition
V xvar(nc);
const V sg = s.col(pu.phase_pos[ Gas ]);
const V rs = Eigen::Map<const V>(& x.gasoilratio()[0], x.gasoilratio().size());
const V rv = Eigen::Map<const V>(& x.rv()[0], x.rv().size());
xvar = isRs_*rs + isRv_*rv + isSg_*sg;
vars0.push_back(xvar);
}
}
template <class Grid, class Implementation>
void
BlackoilModelBase<Grid, Implementation>::variableWellStateInitials(const WellState& xw, std::vector<V>& vars0) const
{
// Initial well rates.
if ( wellsActive() )
{
// Need to reshuffle well rates, from phase running fastest
// to wells running fastest.
const int nw = wells().number_of_wells;
const int np = wells().number_of_phases;
// The transpose() below switches the ordering.
const DataBlock wrates = Eigen::Map<const DataBlock>(& xw.wellRates()[0], nw, np).transpose();
const V qs = Eigen::Map<const V>(wrates.data(), nw*np);
vars0.push_back(qs);
// Initial well bottom-hole pressure.
assert (not xw.bhp().empty());
const V bhp = Eigen::Map<const V>(& xw.bhp()[0], xw.bhp().size());
vars0.push_back(bhp);
}
else
{
// push null states for qs and bhp
vars0.push_back(V());
vars0.push_back(V());
}
}
template <class Grid, class Implementation>
std::vector<int>
BlackoilModelBase<Grid, Implementation>::variableStateIndices() const
{
assert(active_[Oil]);
std::vector<int> indices(5, -1);
int next = 0;
indices[Pressure] = next++;
if (active_[Water]) {
indices[Sw] = next++;
}
if (active_[Gas]) {
indices[Xvar] = next++;
}
indices[Qs] = next++;
indices[Bhp] = next++;
assert(next == fluid_.numPhases() + 2);
return indices;
}
template <class Grid, class Implementation>
std::vector<int>
BlackoilModelBase<Grid, Implementation>::variableWellStateIndices() const
{
// Black oil model standard is 5 equation.
// For the pure well solve, only the well equations are picked.
std::vector<int> indices(5, -1);
int next = 0;
indices[Qs] = next++;
indices[Bhp] = next++;
assert(next == 2);
return indices;
}
template <class Grid, class Implementation>
typename BlackoilModelBase<Grid, Implementation>::SolutionState
BlackoilModelBase<Grid, Implementation>::variableStateExtractVars(const ReservoirState& x,
const std::vector<int>& indices,
std::vector<ADB>& vars) const
{
//using namespace Opm::AutoDiffGrid;
const int nc = Opm::AutoDiffGrid::numCells(grid_);
const Opm::PhaseUsage pu = fluid_.phaseUsage();
SolutionState state(fluid_.numPhases());
// Pressure.
state.pressure = std::move(vars[indices[Pressure]]);
// Temperature cannot be a variable at this time (only constant).
const V temp = Eigen::Map<const V>(& x.temperature()[0], x.temperature().size());
state.temperature = ADB::constant(temp);
// Saturations
{
ADB so = ADB::constant(V::Ones(nc, 1));
if (active_[ Water ]) {
state.saturation[pu.phase_pos[ Water ]] = std::move(vars[indices[Sw]]);
const ADB& sw = state.saturation[pu.phase_pos[ Water ]];
so -= sw;
}
if (active_[ Gas ]) {
// Define Sg Rs and Rv in terms of xvar.
// Xvar is only defined if gas phase is active
const ADB& xvar = vars[indices[Xvar]];
ADB& sg = state.saturation[ pu.phase_pos[ Gas ] ];
sg = isSg_*xvar + isRv_*so;
so -= sg;
if (active_[ Oil ]) {
// RS and RV is only defined if both oil and gas phase are active.
const ADB& sw = (active_[ Water ]
? state.saturation[ pu.phase_pos[ Water ] ]
: ADB::constant(V::Zero(nc, 1)));
state.canonical_phase_pressures = computePressures(state.pressure, sw, so, sg);
const ADB rsSat = fluidRsSat(state.canonical_phase_pressures[ Oil ], so , cells_);
if (has_disgas_) {
state.rs = (1-isRs_)*rsSat + isRs_*xvar;
} else {
state.rs = rsSat;
}
const ADB rvSat = fluidRvSat(state.canonical_phase_pressures[ Gas ], so , cells_);
if (has_vapoil_) {
state.rv = (1-isRv_)*rvSat + isRv_*xvar;
} else {
state.rv = rvSat;
}
}
}
if (active_[ Oil ]) {
// Note that so is never a primary variable.
state.saturation[pu.phase_pos[ Oil ]] = std::move(so);
}
}
// wells
variableStateExtractWellsVars(indices, vars, state);
return state;
}
template <class Grid, class Implementation>
void
BlackoilModelBase<Grid, Implementation>::variableStateExtractWellsVars(const std::vector<int>& indices,
std::vector<ADB>& vars,
SolutionState& state) const
{
// Qs.
state.qs = std::move(vars[indices[Qs]]);
// Bhp.
state.bhp = std::move(vars[indices[Bhp]]);
}
template <class Grid, class Implementation>
void
BlackoilModelBase<Grid, Implementation>::computeAccum(const SolutionState& state,
const int aix )
{
const Opm::PhaseUsage& pu = fluid_.phaseUsage();
const ADB& press = state.pressure;
const ADB& temp = state.temperature;
const std::vector<ADB>& sat = state.saturation;
const ADB& rs = state.rs;
const ADB& rv = state.rv;
const std::vector<PhasePresence> cond = phaseCondition();
const ADB pv_mult = poroMult(press);
const int maxnp = Opm::BlackoilPhases::MaxNumPhases;
for (int phase = 0; phase < maxnp; ++phase) {
if (active_[ phase ]) {
const int pos = pu.phase_pos[ phase ];
rq_[pos].b = fluidReciprocFVF(phase, state.canonical_phase_pressures[phase], temp, rs, rv, cond);
rq_[pos].accum[aix] = pv_mult * rq_[pos].b * sat[pos];
// OPM_AD_DUMP(rq_[pos].b);
// OPM_AD_DUMP(rq_[pos].accum[aix]);
}
}
if (active_[ Oil ] && active_[ Gas ]) {
// Account for gas dissolved in oil and vaporized oil
const int po = pu.phase_pos[ Oil ];
const int pg = pu.phase_pos[ Gas ];
// Temporary copy to avoid contribution of dissolved gas in the vaporized oil
// when both dissolved gas and vaporized oil are present.
const ADB accum_gas_copy =rq_[pg].accum[aix];
rq_[pg].accum[aix] += state.rs * rq_[po].accum[aix];
rq_[po].accum[aix] += state.rv * accum_gas_copy;
// OPM_AD_DUMP(rq_[pg].accum[aix]);
}
}
template <class Grid, class Implementation>
void BlackoilModelBase<Grid, Implementation>::computeWellConnectionPressures(const SolutionState& state,
const WellState& xw)
{
if( ! wellsActive() ) return ;
using namespace Opm::AutoDiffGrid;
// 1. Compute properties required by computeConnectionPressureDelta().
// Note that some of the complexity of this part is due to the function
// taking std::vector<double> arguments, and not Eigen objects.
const int nperf = wells().well_connpos[wells().number_of_wells];
const int nw = wells().number_of_wells;
const std::vector<int> well_cells(wells().well_cells, wells().well_cells + nperf);
// Compute the average pressure in each well block
const V perf_press = Eigen::Map<const V>(xw.perfPress().data(), nperf);
V avg_press = perf_press*0;
for (int w = 0; w < nw; ++w) {
for (int perf = wells().well_connpos[w]; perf < wells().well_connpos[w+1]; ++perf) {
const double p_above = perf == wells().well_connpos[w] ? state.bhp.value()[w] : perf_press[perf - 1];
const double p_avg = (perf_press[perf] + p_above)/2;
avg_press[perf] = p_avg;
}
}
// Use cell values for the temperature as the wells don't knows its temperature yet.
const ADB perf_temp = subset(state.temperature, well_cells);
// Compute b, rsmax, rvmax values for perforations.
// Evaluate the properties using average well block pressures
// and cell values for rs, rv, phase condition and temperature.
const ADB avg_press_ad = ADB::constant(avg_press);
std::vector<PhasePresence> perf_cond(nperf);
const std::vector<PhasePresence>& pc = phaseCondition();
for (int perf = 0; perf < nperf; ++perf) {
perf_cond[perf] = pc[well_cells[perf]];
}
const PhaseUsage& pu = fluid_.phaseUsage();
DataBlock b(nperf, pu.num_phases);
std::vector<double> rsmax_perf(nperf, 0.0);
std::vector<double> rvmax_perf(nperf, 0.0);
if (pu.phase_used[BlackoilPhases::Aqua]) {
const V bw = fluid_.bWat(avg_press_ad, perf_temp, well_cells).value();
b.col(pu.phase_pos[BlackoilPhases::Aqua]) = bw;
}
assert(active_[Oil]);
const V perf_so = subset(state.saturation[pu.phase_pos[Oil]].value(), well_cells);
if (pu.phase_used[BlackoilPhases::Liquid]) {
const ADB perf_rs = subset(state.rs, well_cells);
const V bo = fluid_.bOil(avg_press_ad, perf_temp, perf_rs, perf_cond, well_cells).value();
b.col(pu.phase_pos[BlackoilPhases::Liquid]) = bo;
const V rssat = fluidRsSat(avg_press, perf_so, well_cells);
rsmax_perf.assign(rssat.data(), rssat.data() + nperf);
}
if (pu.phase_used[BlackoilPhases::Vapour]) {
const ADB perf_rv = subset(state.rv, well_cells);
const V bg = fluid_.bGas(avg_press_ad, perf_temp, perf_rv, perf_cond, well_cells).value();
b.col(pu.phase_pos[BlackoilPhases::Vapour]) = bg;
const V rvsat = fluidRvSat(avg_press, perf_so, well_cells);
rvmax_perf.assign(rvsat.data(), rvsat.data() + nperf);
}
// b is row major, so can just copy data.
std::vector<double> b_perf(b.data(), b.data() + nperf * pu.num_phases);
// Extract well connection depths.
const V depth = cellCentroidsZToEigen(grid_);
const V pdepth = subset(depth, well_cells);
std::vector<double> perf_depth(pdepth.data(), pdepth.data() + nperf);
// Surface density.
std::vector<double> surf_dens(fluid_.surfaceDensity(), fluid_.surfaceDensity() + pu.num_phases);
// Gravity
double grav = 0.0;
const double* g = geo_.gravity();
const int dim = dimensions(grid_);
if (g) {
// Guard against gravity in anything but last dimension.
for (int dd = 0; dd < dim - 1; ++dd) {
assert(g[dd] == 0.0);
}
grav = g[dim - 1];
}
// 2. Compute pressure deltas, and store the results.
std::vector<double> cdp = WellDensitySegmented
::computeConnectionPressureDelta(wells(), xw, fluid_.phaseUsage(),
b_perf, rsmax_perf, rvmax_perf, perf_depth,
surf_dens, grav);
well_perforation_pressure_diffs_ = Eigen::Map<const V>(cdp.data(), nperf);
}
template <class Grid, class Implementation>
void
BlackoilModelBase<Grid, Implementation>::
assemble(const ReservoirState& reservoir_state,
WellState& well_state,
const bool initial_assembly)
{
using namespace Opm::AutoDiffGrid;
// Possibly switch well controls and updating well state to
// get reasonable initial conditions for the wells
updateWellControls(well_state);
// Create the primary variables.
SolutionState state = asImpl().variableState(reservoir_state, well_state);
if (initial_assembly) {
// Create the (constant, derivativeless) initial state.
SolutionState state0 = state;
asImpl().makeConstantState(state0);
// Compute initial accumulation contributions
// and well connection pressures.
asImpl().computeAccum(state0, 0);
computeWellConnectionPressures(state0, well_state);
}
// OPM_AD_DISKVAL(state.pressure);
// OPM_AD_DISKVAL(state.saturation[0]);
// OPM_AD_DISKVAL(state.saturation[1]);
// OPM_AD_DISKVAL(state.saturation[2]);
// OPM_AD_DISKVAL(state.rs);
// OPM_AD_DISKVAL(state.rv);
// OPM_AD_DISKVAL(state.qs);
// OPM_AD_DISKVAL(state.bhp);
// -------- Mass balance equations --------
asImpl().assembleMassBalanceEq(state);
// -------- Well equations ----------
if ( ! wellsActive() ) {
return;
}
V aliveWells;
const int np = wells().number_of_phases;
std::vector<ADB> cq_s(np, ADB::null());
const int nw = wells().number_of_wells;
const int nperf = wells().well_connpos[nw];
const std::vector<int> well_cells(wells().well_cells, wells().well_cells + nperf);
std::vector<ADB> mob_perfcells(np, ADB::null());
std::vector<ADB> b_perfcells(np, ADB::null());
for (int phase = 0; phase < np; ++phase) {
mob_perfcells[phase] = subset(rq_[phase].mob, well_cells);
b_perfcells[phase] = subset(rq_[phase].b, well_cells);
}
if (param_.solve_welleq_initially_ && initial_assembly) {
// solve the well equations as a pre-processing step
solveWellEq(mob_perfcells, b_perfcells, state, well_state);
}
asImpl().computeWellFlux(state, mob_perfcells, b_perfcells, aliveWells, cq_s);
asImpl().updatePerfPhaseRatesAndPressures(cq_s, state, well_state);
asImpl().addWellFluxEq(cq_s, state);
asImpl().addWellContributionToMassBalanceEq(cq_s, state, well_state);
addWellControlEq(state, well_state, aliveWells);
}
template <class Grid, class Implementation>
void
BlackoilModelBase<Grid, Implementation>::
assembleMassBalanceEq(const SolutionState& state)
{
// Compute b_p and the accumulation term b_p*s_p for each phase,
// except gas. For gas, we compute b_g*s_g + Rs*b_o*s_o.
// These quantities are stored in rq_[phase].accum[1].
// The corresponding accumulation terms from the start of
// the timestep (b^0_p*s^0_p etc.) were already computed
// on the initial call to assemble() and stored in rq_[phase].accum[0].
asImpl().computeAccum(state, 1);
// Set up the common parts of the mass balance equations
// for each active phase.
const V transi = subset(geo_.transmissibility(), ops_.internal_faces);
const V trans_nnc = ops_.nnc_trans;
V trans_all(transi.size() + trans_nnc.size());
trans_all << transi, trans_nnc;
const std::vector<ADB> kr = computeRelPerm(state);
for (int phaseIdx = 0; phaseIdx < fluid_.numPhases(); ++phaseIdx) {
asImpl().computeMassFlux(phaseIdx, trans_all, kr[canph_[phaseIdx]], state.canonical_phase_pressures[canph_[phaseIdx]], state);
residual_.material_balance_eq[ phaseIdx ] =
pvdt_ * (rq_[phaseIdx].accum[1] - rq_[phaseIdx].accum[0])
+ ops_.div*rq_[phaseIdx].mflux;
}
// -------- Extra (optional) rs and rv contributions to the mass balance equations --------
// Add the extra (flux) terms to the mass balance equations
// From gas dissolved in the oil phase (rs) and oil vaporized in the gas phase (rv)
// The extra terms in the accumulation part of the equation are already handled.
if (active_[ Oil ] && active_[ Gas ]) {
const int po = fluid_.phaseUsage().phase_pos[ Oil ];
const int pg = fluid_.phaseUsage().phase_pos[ Gas ];
const UpwindSelector<double> upwindOil(grid_, ops_,
rq_[po].dh.value());
const ADB rs_face = upwindOil.select(state.rs);
const UpwindSelector<double> upwindGas(grid_, ops_,
rq_[pg].dh.value());
const ADB rv_face = upwindGas.select(state.rv);
residual_.material_balance_eq[ pg ] += ops_.div * (rs_face * rq_[po].mflux);
residual_.material_balance_eq[ po ] += ops_.div * (rv_face * rq_[pg].mflux);
// OPM_AD_DUMP(residual_.material_balance_eq[ Gas ]);
}
}
template <class Grid, class Implementation>
void
BlackoilModelBase<Grid, Implementation>::addWellContributionToMassBalanceEq(const std::vector<ADB>& cq_s,
const SolutionState&,
const WellState&)
{
// Add well contributions to mass balance equations
const int nc = Opm::AutoDiffGrid::numCells(grid_);
const int nw = wells().number_of_wells;
const int nperf = wells().well_connpos[nw];
const int np = wells().number_of_phases;
const std::vector<int> well_cells(wells().well_cells, wells().well_cells + nperf);
for (int phase = 0; phase < np; ++phase) {
residual_.material_balance_eq[phase] -= superset(cq_s[phase], well_cells, nc);
}
}
template <class Grid, class Implementation>
void
BlackoilModelBase<Grid, Implementation>::computeWellFlux(const SolutionState& state,
const std::vector<ADB>& mob_perfcells,
const std::vector<ADB>& b_perfcells,
V& aliveWells,
std::vector<ADB>& cq_s)
{
if( ! wellsActive() ) return ;
const int np = wells().number_of_phases;
const int nw = wells().number_of_wells;
const int nperf = wells().well_connpos[nw];
const Opm::PhaseUsage& pu = fluid_.phaseUsage();
V Tw = Eigen::Map<const V>(wells().WI, nperf);
const std::vector<int> well_cells(wells().well_cells, wells().well_cells + nperf);
// pressure diffs computed already (once per step, not changing per iteration)
const V& cdp = well_perforation_pressure_diffs_;
// Extract needed quantities for the perforation cells
const ADB& p_perfcells = subset(state.pressure, well_cells);
const ADB& rv_perfcells = subset(state.rv, well_cells);
const ADB& rs_perfcells = subset(state.rs, well_cells);
// Perforation pressure
const ADB perfpressure = (wops_.w2p * state.bhp) + cdp;
// Pressure drawdown (also used to determine direction of flow)
const ADB drawdown = p_perfcells - perfpressure;
// Compute vectors with zero and ones that
// selects the wanted quantities.
// selects injection perforations
V selectInjectingPerforations = V::Zero(nperf);
// selects producing perforations
V selectProducingPerforations = V::Zero(nperf);
for (int c = 0; c < nperf; ++c){
if (drawdown.value()[c] < 0)
selectInjectingPerforations[c] = 1;
else
selectProducingPerforations[c] = 1;
}
// HANDLE FLOW INTO WELLBORE
// compute phase volumetric rates at standard conditions
std::vector<ADB> cq_ps(np, ADB::null());
for (int phase = 0; phase < np; ++phase) {
const ADB cq_p = -(selectProducingPerforations * Tw) * (mob_perfcells[phase] * drawdown);
cq_ps[phase] = b_perfcells[phase] * cq_p;
}
if (active_[Oil] && active_[Gas]) {
const int oilpos = pu.phase_pos[Oil];
const int gaspos = pu.phase_pos[Gas];
const ADB cq_psOil = cq_ps[oilpos];
const ADB cq_psGas = cq_ps[gaspos];
cq_ps[gaspos] += rs_perfcells * cq_psOil;
cq_ps[oilpos] += rv_perfcells * cq_psGas;
}
// HANDLE FLOW OUT FROM WELLBORE
// Using total mobilities
ADB total_mob = mob_perfcells[0];
for (int phase = 1; phase < np; ++phase) {
total_mob += mob_perfcells[phase];
}
// injection perforations total volume rates
const ADB cqt_i = -(selectInjectingPerforations * Tw) * (total_mob * drawdown);
// compute wellbore mixture for injecting perforations
// The wellbore mixture depends on the inflow from the reservoar
// and the well injection rates.
// compute avg. and total wellbore phase volumetric rates at standard conds
const DataBlock compi = Eigen::Map<const DataBlock>(wells().comp_frac, nw, np);
std::vector<ADB> wbq(np, ADB::null());
ADB wbqt = ADB::constant(V::Zero(nw));
for (int phase = 0; phase < np; ++phase) {
const ADB& q_ps = wops_.p2w * cq_ps[phase];
const ADB& q_s = subset(state.qs, Span(nw, 1, phase*nw));
Selector<double> injectingPhase_selector(q_s.value(), Selector<double>::GreaterZero);
const int pos = pu.phase_pos[phase];
wbq[phase] = (compi.col(pos) * injectingPhase_selector.select(q_s,ADB::constant(V::Zero(nw)))) - q_ps;
wbqt += wbq[phase];
}
// compute wellbore mixture at standard conditions.
Selector<double> notDeadWells_selector(wbqt.value(), Selector<double>::Zero);
std::vector<ADB> cmix_s(np, ADB::null());
for (int phase = 0; phase < np; ++phase) {
const int pos = pu.phase_pos[phase];
cmix_s[phase] = wops_.w2p * notDeadWells_selector.select(ADB::constant(compi.col(pos)), wbq[phase]/wbqt);
}
// compute volume ratio between connection at standard conditions
ADB volumeRatio = ADB::constant(V::Zero(nperf));
const ADB d = V::Constant(nperf,1.0) - rv_perfcells * rs_perfcells;
for (int phase = 0; phase < np; ++phase) {
ADB tmp = cmix_s[phase];
if (phase == Oil && active_[Gas]) {
const int gaspos = pu.phase_pos[Gas];
tmp = tmp - rv_perfcells * cmix_s[gaspos] / d;
}
if (phase == Gas && active_[Oil]) {
const int oilpos = pu.phase_pos[Oil];
tmp = tmp - rs_perfcells * cmix_s[oilpos] / d;
}
volumeRatio += tmp / b_perfcells[phase];
}
// injecting connections total volumerates at standard conditions
ADB cqt_is = cqt_i/volumeRatio;
// connection phase volumerates at standard conditions
for (int phase = 0; phase < np; ++phase) {
cq_s[phase] = cq_ps[phase] + cmix_s[phase]*cqt_is;
}
// check for dead wells (used in the well controll equations)
aliveWells = V::Constant(nw, 1.0);
for (int w = 0; w < nw; ++w) {
if (wbqt.value()[w] == 0) {
aliveWells[w] = 0.0;
}
}
}
template <class Grid, class Implementation>
void BlackoilModelBase<Grid, Implementation>::updatePerfPhaseRatesAndPressures(const std::vector<ADB>& cq_s,
const SolutionState& state,
WellState& xw)
{
// Update the perforation phase rates (used to calculate the pressure drop in the wellbore).
const int np = wells().number_of_phases;
const int nw = wells().number_of_wells;
const int nperf = wells().well_connpos[nw];
V cq = superset(cq_s[0].value(), Span(nperf, np, 0), nperf*np);
for (int phase = 1; phase < np; ++phase) {
cq += superset(cq_s[phase].value(), Span(nperf, np, phase), nperf*np);
}
xw.perfPhaseRates().assign(cq.data(), cq.data() + nperf*np);
// Update the perforation pressures.
const V& cdp = well_perforation_pressure_diffs_;
const V perfpressure = (wops_.w2p * state.bhp.value().matrix()).array() + cdp;
xw.perfPress().assign(perfpressure.data(), perfpressure.data() + nperf);
}
template <class Grid, class Implementation>
void BlackoilModelBase<Grid, Implementation>::addWellFluxEq(const std::vector<ADB>& cq_s,
const SolutionState& state)
{
const int np = wells().number_of_phases;
const int nw = wells().number_of_wells;
ADB qs = state.qs;
for (int phase = 0; phase < np; ++phase) {
qs -= superset(wops_.p2w * cq_s[phase], Span(nw, 1, phase*nw), nw*np);
}
residual_.well_flux_eq = qs;
}
namespace detail
{
double rateToCompare(const std::vector<double>& well_phase_flow_rate,
const int well,
const int num_phases,
const double* distr)
{
double rate = 0.0;
for (int phase = 0; phase < num_phases; ++phase) {
// Important: well_phase_flow_rate is ordered with all phase rates for first
// well first, then all phase rates for second well etc.
rate += well_phase_flow_rate[well*num_phases + phase] * distr[phase];
}
return rate;
}
bool constraintBroken(const std::vector<double>& bhp,
const std::vector<double>& well_phase_flow_rate,
const int well,
const int num_phases,
const WellType& well_type,
const WellControls* wc,
const int ctrl_index)
{
const WellControlType ctrl_type = well_controls_iget_type(wc, ctrl_index);
const double target = well_controls_iget_target(wc, ctrl_index);
const double* distr = well_controls_iget_distr(wc, ctrl_index);
bool broken = false;
switch (well_type) {
case INJECTOR:
{
switch (ctrl_type) {
case BHP:
broken = bhp[well] > target;
break;
case RESERVOIR_RATE: // Intentional fall-through
case SURFACE_RATE:
broken = rateToCompare(well_phase_flow_rate,
well, num_phases, distr) > target;
break;
}
}
break;
case PRODUCER:
{
switch (ctrl_type) {
case BHP:
broken = bhp[well] < target;
break;
case RESERVOIR_RATE: // Intentional fall-through
case SURFACE_RATE:
// Note that the rates compared below are negative,
// so breaking the constraints means: too high flow rate
// (as for injection).
broken = rateToCompare(well_phase_flow_rate,
well, num_phases, distr) < target;
break;
}
}
break;
default:
OPM_THROW(std::logic_error, "Can only handle INJECTOR and PRODUCER wells.");
}
return broken;
}
} // namespace detail
template <class Grid, class Implementation>
void BlackoilModelBase<Grid, Implementation>::updateWellControls(WellState& xw) const
{
if( ! wellsActive() ) return ;
std::string modestring[3] = { "BHP", "RESERVOIR_RATE", "SURFACE_RATE" };
// Find, for each well, if any constraints are broken. If so,
// switch control to first broken constraint.
const int np = wells().number_of_phases;
const int nw = wells().number_of_wells;
for (int w = 0; w < nw; ++w) {
const WellControls* wc = wells().ctrls[w];
// The current control in the well state overrides
// the current control set in the Wells struct, which
// is instead treated as a default.
int current = xw.currentControls()[w];
// Loop over all controls except the current one, and also
// skip any RESERVOIR_RATE controls, since we cannot
// handle those.
const int nwc = well_controls_get_num(wc);
int ctrl_index = 0;
for (; ctrl_index < nwc; ++ctrl_index) {
if (ctrl_index == current) {
// This is the currently used control, so it is
// used as an equation. So this is not used as an
// inequality constraint, and therefore skipped.
continue;
}
if (detail::constraintBroken(xw.bhp(), xw.wellRates(), w, np, wells().type[w], wc, ctrl_index)) {
// ctrl_index will be the index of the broken constraint after the loop.
break;
}
}
if (ctrl_index != nwc) {
// Constraint number ctrl_index was broken, switch to it.
if (terminal_output_)
{
std::cout << "Switching control mode for well " << wells().name[w]
<< " from " << modestring[well_controls_iget_type(wc, current)]
<< " to " << modestring[well_controls_iget_type(wc, ctrl_index)] << std::endl;
}
xw.currentControls()[w] = ctrl_index;
current = xw.currentControls()[w];
}
// Updating well state and primary variables.
// Target values are used as initial conditions for BHP and SURFACE_RATE
const double target = well_controls_iget_target(wc, current);
const double* distr = well_controls_iget_distr(wc, current);
switch (well_controls_iget_type(wc, current)) {
case BHP:
xw.bhp()[w] = target;
break;
case RESERVOIR_RATE:
// No direct change to any observable quantity at
// surface condition. In this case, use existing
// flow rates as initial conditions as reservoir
// rate acts only in aggregate.
break;
case SURFACE_RATE:
for (int phase = 0; phase < np; ++phase) {
if (distr[phase] > 0.0) {
xw.wellRates()[np*w + phase] = target * distr[phase];
}
}
break;
}
}
}
template <class Grid, class Implementation>
void BlackoilModelBase<Grid, Implementation>::solveWellEq(const std::vector<ADB>& mob_perfcells,
const std::vector<ADB>& b_perfcells,
SolutionState& state,
WellState& well_state)
{
V aliveWells;
const int np = wells().number_of_phases;
std::vector<ADB> cq_s(np, ADB::null());
std::vector<int> indices = variableWellStateIndices();
SolutionState state0 = state;
asImpl().makeConstantState(state0);
std::vector<ADB> mob_perfcells_const(np, ADB::null());
std::vector<ADB> b_perfcells_const(np, ADB::null());
for (int phase = 0; phase < np; ++phase) {
mob_perfcells_const[phase] = ADB::constant(mob_perfcells[phase].value());
b_perfcells_const[phase] = ADB::constant(b_perfcells[phase].value());
}
int it = 0;
bool converged;
do {
// bhp and Q for the wells
std::vector<V> vars0;
vars0.reserve(2);
variableWellStateInitials(well_state, vars0);
std::vector<ADB> vars = ADB::variables(vars0);
SolutionState wellSolutionState = state0;
variableStateExtractWellsVars(indices, vars, wellSolutionState);
asImpl().computeWellFlux(wellSolutionState, mob_perfcells_const, b_perfcells_const, aliveWells, cq_s);
asImpl().updatePerfPhaseRatesAndPressures(cq_s, wellSolutionState, well_state);
asImpl().addWellFluxEq(cq_s, wellSolutionState);
addWellControlEq(wellSolutionState, well_state, aliveWells);
converged = getWellConvergence(it);
if (converged) {
break;
}
++it;
std::vector<ADB> eqs;
eqs.reserve(2);
eqs.push_back(residual_.well_flux_eq);
eqs.push_back(residual_.well_eq);
ADB total_residual = vertcatCollapseJacs(eqs);
const std::vector<M>& Jn = total_residual.derivative();
const Eigen::SparseLU< M > solver(Jn[0]);
const Eigen::VectorXd& dx = solver.solve(total_residual.value().matrix());
assert(dx.size() == (well_state.numWells() * (well_state.numPhases()+1)));
updateWellState(dx.array(), well_state);
updateWellControls(well_state);
} while (it < 15);
if (converged) {
std::cout << "well converged iter: " << it << std::endl;
const int nw = wells().number_of_wells;
{
// We will set the bhp primary variable to the new ones,
// but we do not change the derivatives here.
ADB::V new_bhp = Eigen::Map<ADB::V>(well_state.bhp().data(), nw);
// Avoiding the copy below would require a value setter method
// in AutoDiffBlock.
std::vector<ADB::M> old_derivs = state.bhp.derivative();
state.bhp = ADB::function(std::move(new_bhp), std::move(old_derivs));
}
{
// Need to reshuffle well rates, from phase running fastest
// to wells running fastest.
// The transpose() below switches the ordering.
const DataBlock wrates = Eigen::Map<const DataBlock>(well_state.wellRates().data(), nw, np).transpose();
ADB::V new_qs = Eigen::Map<const V>(wrates.data(), nw*np);
std::vector<ADB::M> old_derivs = state.qs.derivative();
state.qs = ADB::function(std::move(new_qs), std::move(old_derivs));
}
computeWellConnectionPressures(state, well_state);
}
}
template <class Grid, class Implementation>
void BlackoilModelBase<Grid, Implementation>::addWellControlEq(const SolutionState& state,
const WellState& xw,
const V& aliveWells)
{
if( ! wellsActive() ) return;
const int np = wells().number_of_phases;
const int nw = wells().number_of_wells;
V bhp_targets = V::Zero(nw);
V rate_targets = V::Zero(nw);
M rate_distr(nw, np*nw);
for (int w = 0; w < nw; ++w) {
const WellControls* wc = wells().ctrls[w];
// The current control in the well state overrides
// the current control set in the Wells struct, which
// is instead treated as a default.
const int current = xw.currentControls()[w];
switch (well_controls_iget_type(wc, current)) {
case BHP:
{
bhp_targets (w) = well_controls_iget_target(wc, current);
rate_targets(w) = -1e100;
}
break;
case RESERVOIR_RATE: // Intentional fall-through
case SURFACE_RATE:
{
// RESERVOIR and SURFACE rates look the same, from a
// high-level point of view, in the system of
// simultaneous linear equations.
const double* const distr =
well_controls_iget_distr(wc, current);
for (int p = 0; p < np; ++p) {
rate_distr.insert(w, p*nw + w) = distr[p];
}
bhp_targets (w) = -1.0e100;
rate_targets(w) = well_controls_iget_target(wc, current);
}
break;
}
}
const ADB bhp_residual = state.bhp - bhp_targets;
const ADB rate_residual = rate_distr * state.qs - rate_targets;
// Choose bhp residual for positive bhp targets.
Selector<double> bhp_selector(bhp_targets);
residual_.well_eq = bhp_selector.select(bhp_residual, rate_residual);
// For wells that are dead (not flowing), and therefore not communicating
// with the reservoir, we set the equation to be equal to the well's total
// flow. This will be a solution only if the target rate is also zero.
M rate_summer(nw, np*nw);
for (int w = 0; w < nw; ++w) {
for (int phase = 0; phase < np; ++phase) {
rate_summer.insert(w, phase*nw + w) = 1.0;
}
}
Selector<double> alive_selector(aliveWells, Selector<double>::NotEqualZero);
residual_.well_eq = alive_selector.select(residual_.well_eq, rate_summer * state.qs);
// OPM_AD_DUMP(residual_.well_eq);
}
template <class Grid, class Implementation>
V BlackoilModelBase<Grid, Implementation>::solveJacobianSystem() const
{
return linsolver_.computeNewtonIncrement(residual_);
}
namespace detail
{
/// \brief Compute the L-infinity norm of a vector
/// \warn This function is not suitable to compute on the well equations.
/// \param a The container to compute the infinity norm on.
/// It has to have one entry for each cell.
/// \param info In a parallel this holds the information about the data distribution.
double infinityNorm( const ADB& a, const boost::any& pinfo = boost::any() )
{
static_cast<void>(pinfo); // Suppress warning in non-MPI case.
#if HAVE_MPI
if ( pinfo.type() == typeid(ParallelISTLInformation) )
{
const ParallelISTLInformation& real_info =
boost::any_cast<const ParallelISTLInformation&>(pinfo);
double result=0;
real_info.computeReduction(a.value(), Reduction::makeGlobalMaxFunctor<double>(), result);
return result;
}
else
#endif
{
if( a.value().size() > 0 ) {
return a.value().matrix().lpNorm<Eigen::Infinity> ();
}
else { // this situation can occur when no wells are present
return 0.0;
}
}
}
/// \brief Compute the L-infinity norm of a vector representing a well equation.
/// \param a The container to compute the infinity norm on.
/// \param info In a parallel this holds the information about the data distribution.
double infinityNormWell( const ADB& a, const boost::any& pinfo )
{
static_cast<void>(pinfo); // Suppress warning in non-MPI case.
double result=0;
if( a.value().size() > 0 ) {
result = a.value().matrix().lpNorm<Eigen::Infinity> ();
}
#if HAVE_MPI
if ( pinfo.type() == typeid(ParallelISTLInformation) )
{
const ParallelISTLInformation& real_info =
boost::any_cast<const ParallelISTLInformation&>(pinfo);
result = real_info.communicator().max(result);
}
#endif
return result;
}
} // namespace detail
template <class Grid, class Implementation>
void BlackoilModelBase<Grid, Implementation>::updateState(const V& dx,
ReservoirState& reservoir_state,
WellState& well_state)
{
using namespace Opm::AutoDiffGrid;
const int np = fluid_.numPhases();
const int nc = numCells(grid_);
const int nw = wellsActive() ? wells().number_of_wells : 0;
const V null;
assert(null.size() == 0);
const V zero = V::Zero(nc);
// Extract parts of dx corresponding to each part.
const V dp = subset(dx, Span(nc));
int varstart = nc;
const V dsw = active_[Water] ? subset(dx, Span(nc, 1, varstart)) : null;
varstart += dsw.size();
const V dxvar = active_[Gas] ? subset(dx, Span(nc, 1, varstart)): null;
varstart += dxvar.size();
// Extract well parts np phase rates + bhp
const V dwells = subset(dx, Span((np+1)*nw, 1, varstart));
varstart += dwells.size();
assert(varstart == dx.size());
// Pressure update.
const double dpmaxrel = dpMaxRel();
const V p_old = Eigen::Map<const V>(&reservoir_state.pressure()[0], nc, 1);
const V absdpmax = dpmaxrel*p_old.abs();
const V dp_limited = sign(dp) * dp.abs().min(absdpmax);
const V p = (p_old - dp_limited).max(zero);
std::copy(&p[0], &p[0] + nc, reservoir_state.pressure().begin());
// Saturation updates.
const Opm::PhaseUsage& pu = fluid_.phaseUsage();
const DataBlock s_old = Eigen::Map<const DataBlock>(& reservoir_state.saturation()[0], nc, np);
const double dsmax = dsMax();
V so;
V sw;
V sg;
{
V maxVal = zero;
V dso = zero;
if (active_[Water]){
maxVal = dsw.abs().max(maxVal);
dso = dso - dsw;
}
V dsg;
if (active_[Gas]){
dsg = isSg_ * dxvar - isRv_ * dsw;
maxVal = dsg.abs().max(maxVal);
dso = dso - dsg;
}
maxVal = dso.abs().max(maxVal);
V step = dsmax/maxVal;
step = step.min(1.);
if (active_[Water]) {
const int pos = pu.phase_pos[ Water ];
const V sw_old = s_old.col(pos);
sw = sw_old - step * dsw;
}
if (active_[Gas]) {
const int pos = pu.phase_pos[ Gas ];
const V sg_old = s_old.col(pos);
sg = sg_old - step * dsg;
}
const int pos = pu.phase_pos[ Oil ];
const V so_old = s_old.col(pos);
so = so_old - step * dso;
}
// Appleyard chop process.
auto ixg = sg < 0;
for (int c = 0; c < nc; ++c) {
if (ixg[c]) {
sw[c] = sw[c] / (1-sg[c]);
so[c] = so[c] / (1-sg[c]);
sg[c] = 0;
}
}
auto ixo = so < 0;
for (int c = 0; c < nc; ++c) {
if (ixo[c]) {
sw[c] = sw[c] / (1-so[c]);
sg[c] = sg[c] / (1-so[c]);
so[c] = 0;
}
}
auto ixw = sw < 0;
for (int c = 0; c < nc; ++c) {
if (ixw[c]) {
so[c] = so[c] / (1-sw[c]);
sg[c] = sg[c] / (1-sw[c]);
sw[c] = 0;
}
}
const V sumSat = sw + so + sg;
sw = sw / sumSat;
so = so / sumSat;
sg = sg / sumSat;
// Update the reservoir_state
for (int c = 0; c < nc; ++c) {
reservoir_state.saturation()[c*np + pu.phase_pos[ Water ]] = sw[c];
}
for (int c = 0; c < nc; ++c) {
reservoir_state.saturation()[c*np + pu.phase_pos[ Gas ]] = sg[c];
}
if (active_[ Oil ]) {
const int pos = pu.phase_pos[ Oil ];
for (int c = 0; c < nc; ++c) {
reservoir_state.saturation()[c*np + pos] = so[c];
}
}
// Update rs and rv
const double drmaxrel = drMaxRel();
V rs;
if (has_disgas_) {
const V rs_old = Eigen::Map<const V>(&reservoir_state.gasoilratio()[0], nc);
const V drs = isRs_ * dxvar;
const V drs_limited = sign(drs) * drs.abs().min(rs_old.abs()*drmaxrel);
rs = rs_old - drs_limited;
}
V rv;
if (has_vapoil_) {
const V rv_old = Eigen::Map<const V>(&reservoir_state.rv()[0], nc);
const V drv = isRv_ * dxvar;
const V drv_limited = sign(drv) * drv.abs().min(rv_old.abs()*drmaxrel);
rv = rv_old - drv_limited;
}
// Sg is used as primal variable for water only cells.
const double epsilon = std::sqrt(std::numeric_limits<double>::epsilon());
auto watOnly = sw > (1 - epsilon);
// phase translation sg <-> rs
std::fill(primalVariable_.begin(), primalVariable_.end(), PrimalVariables::Sg);
if (has_disgas_) {
const V rsSat0 = fluidRsSat(p_old, s_old.col(pu.phase_pos[Oil]), cells_);
const V rsSat = fluidRsSat(p, so, cells_);
// The obvious case
auto hasGas = (sg > 0 && isRs_ == 0);
// Set oil saturated if previous rs is sufficiently large
const V rs_old = Eigen::Map<const V>(&reservoir_state.gasoilratio()[0], nc);
auto gasVaporized = ( (rs > rsSat * (1+epsilon) && isRs_ == 1 ) && (rs_old > rsSat0 * (1-epsilon)) );
auto useSg = watOnly || hasGas || gasVaporized;
for (int c = 0; c < nc; ++c) {
if (useSg[c]) {
rs[c] = rsSat[c];
} else {
primalVariable_[c] = PrimalVariables::RS;
}
}
}
// phase transitions so <-> rv
if (has_vapoil_) {
// The gas pressure is needed for the rvSat calculations
const V gaspress_old = computeGasPressure(p_old, s_old.col(Water), s_old.col(Oil), s_old.col(Gas));
const V gaspress = computeGasPressure(p, sw, so, sg);
const V rvSat0 = fluidRvSat(gaspress_old, s_old.col(pu.phase_pos[Oil]), cells_);
const V rvSat = fluidRvSat(gaspress, so, cells_);
// The obvious case
auto hasOil = (so > 0 && isRv_ == 0);
// Set oil saturated if previous rv is sufficiently large
const V rv_old = Eigen::Map<const V>(&reservoir_state.rv()[0], nc);
auto oilCondensed = ( (rv > rvSat * (1+epsilon) && isRv_ == 1) && (rv_old > rvSat0 * (1-epsilon)) );
auto useSg = watOnly || hasOil || oilCondensed;
for (int c = 0; c < nc; ++c) {
if (useSg[c]) {
rv[c] = rvSat[c];
} else {
primalVariable_[c] = PrimalVariables::RV;
}
}
}
// Update the reservoir_state
if (has_disgas_) {
std::copy(&rs[0], &rs[0] + nc, reservoir_state.gasoilratio().begin());
}
if (has_vapoil_) {
std::copy(&rv[0], &rv[0] + nc, reservoir_state.rv().begin());
}
updateWellState(dwells,well_state);
// Update phase conditions used for property calculations.
updatePhaseCondFromPrimalVariable();
}
template <class Grid, class Implementation>
void
BlackoilModelBase<Grid, Implementation>::updateWellState(const V& dwells,
WellState& well_state)
{
if( wellsActive() )
{
const int np = wells().number_of_phases;
const int nw = wellsActive() ? wells().number_of_wells : 0;
// Extract parts of dwells corresponding to each part.
int varstart = 0;
const V dqs = subset(dwells, Span(np*nw, 1, varstart));
varstart += dqs.size();
const V dbhp = subset(dwells, Span(nw, 1, varstart));
varstart += dbhp.size();
assert(varstart == dwells.size());
const double dpmaxrel = dpMaxRel();
// Qs update.
// Since we need to update the wellrates, that are ordered by wells,
// from dqs which are ordered by phase, the simplest is to compute
// dwr, which is the data from dqs but ordered by wells.
const DataBlock wwr = Eigen::Map<const DataBlock>(dqs.data(), np, nw).transpose();
const V dwr = Eigen::Map<const V>(wwr.data(), nw*np);
const V wr_old = Eigen::Map<const V>(&well_state.wellRates()[0], nw*np);
const V wr = wr_old - dwr;
std::copy(&wr[0], &wr[0] + wr.size(), well_state.wellRates().begin());
// Bhp update.
const V bhp_old = Eigen::Map<const V>(&well_state.bhp()[0], nw, 1);
const V dbhp_limited = sign(dbhp) * dbhp.abs().min(bhp_old.abs()*dpmaxrel);
const V bhp = bhp_old - dbhp_limited;
std::copy(&bhp[0], &bhp[0] + bhp.size(), well_state.bhp().begin());
}
}
template <class Grid, class Implementation>
std::vector<ADB>
BlackoilModelBase<Grid, Implementation>::computeRelPerm(const SolutionState& state) const
{
using namespace Opm::AutoDiffGrid;
const int nc = numCells(grid_);
const ADB zero = ADB::constant(V::Zero(nc));
const Opm::PhaseUsage& pu = fluid_.phaseUsage();
const ADB& sw = (active_[ Water ]
? state.saturation[ pu.phase_pos[ Water ] ]
: zero);
const ADB& so = (active_[ Oil ]
? state.saturation[ pu.phase_pos[ Oil ] ]
: zero);
const ADB& sg = (active_[ Gas ]
? state.saturation[ pu.phase_pos[ Gas ] ]
: zero);
return fluid_.relperm(sw, so, sg, cells_);
}
template <class Grid, class Implementation>
std::vector<ADB>
BlackoilModelBase<Grid, Implementation>::
computePressures(const ADB& po,
const ADB& sw,
const ADB& so,
const ADB& sg) const
{
// convert the pressure offsets to the capillary pressures
std::vector<ADB> pressure = fluid_.capPress(sw, so, sg, cells_);
for (int phaseIdx = 0; phaseIdx < BlackoilPhases::MaxNumPhases; ++phaseIdx) {
// The reference pressure is always the liquid phase (oil) pressure.
if (phaseIdx == BlackoilPhases::Liquid)
continue;
pressure[phaseIdx] = pressure[phaseIdx] - pressure[BlackoilPhases::Liquid];
}
// Since pcow = po - pw, but pcog = pg - po,
// we have
// pw = po - pcow
// pg = po + pcgo
// This is an unfortunate inconsistency, but a convention we must handle.
for (int phaseIdx = 0; phaseIdx < BlackoilPhases::MaxNumPhases; ++phaseIdx) {
if (phaseIdx == BlackoilPhases::Aqua) {
pressure[phaseIdx] = po - pressure[phaseIdx];
} else {
pressure[phaseIdx] += po;
}
}
return pressure;
}
template <class Grid, class Implementation>
V
BlackoilModelBase<Grid, Implementation>::computeGasPressure(const V& po,
const V& sw,
const V& so,
const V& sg) const
{
assert (active_[Gas]);
std::vector<ADB> cp = fluid_.capPress(ADB::constant(sw),
ADB::constant(so),
ADB::constant(sg),
cells_);
return cp[Gas].value() + po;
}
template <class Grid, class Implementation>
void
BlackoilModelBase<Grid, Implementation>::computeMassFlux(const int actph ,
const V& transi,
const ADB& kr ,
const ADB& phasePressure,
const SolutionState& state)
{
// Compute and store mobilities.
const int canonicalPhaseIdx = canph_[ actph ];
const std::vector<PhasePresence>& cond = phaseCondition();
const ADB tr_mult = transMult(state.pressure);
const ADB mu = fluidViscosity(canonicalPhaseIdx, phasePressure, state.temperature, state.rs, state.rv, cond);
rq_[ actph ].mob = tr_mult * kr / mu;
// Compute head differentials. Gravity potential is done using the face average as in eclipse and MRST.
const ADB rho = fluidDensity(canonicalPhaseIdx, rq_[actph].b, state.rs, state.rv);
const ADB rhoavg = ops_.caver * rho;
rq_[ actph ].dh = ops_.ngrad * phasePressure - geo_.gravity()[2] * (rhoavg * (ops_.ngrad * geo_.z().matrix()));
if (use_threshold_pressure_) {
applyThresholdPressures(rq_[ actph ].dh);
}
// Compute phase fluxes with upwinding of formation value factor and mobility.
const ADB& b = rq_[ actph ].b;
const ADB& mob = rq_[ actph ].mob;
const ADB& dh = rq_[ actph ].dh;
UpwindSelector<double> upwind(grid_, ops_, dh.value());
rq_[ actph ].mflux = upwind.select(b * mob) * (transi * dh);
}
template <class Grid, class Implementation>
void
BlackoilModelBase<Grid, Implementation>::applyThresholdPressures(ADB& dp)
{
// We support reversible threshold pressures only.
// Method: if the potential difference is lower (in absolute
// value) than the threshold for any face, then the potential
// (and derivatives) is set to zero. If it is above the
// threshold, the threshold pressure is subtracted from the
// absolute potential (the potential is moved towards zero).
// Identify the set of faces where the potential is under the
// threshold, that shall have zero flow. Storing the bool
// Array as a V (a double Array) with 1 and 0 elements, a
// 1 where flow is allowed, a 0 where it is not.
const V high_potential = (dp.value().abs() >= threshold_pressures_by_interior_face_).template cast<double>();
// Create a sparse vector that nullifies the low potential elements.
const M keep_high_potential = spdiag(high_potential);
// Find the current sign for the threshold modification
const V sign_dp = sign(dp.value());
const V threshold_modification = sign_dp * threshold_pressures_by_interior_face_;
// Modify potential and nullify where appropriate.
dp = keep_high_potential * (dp - threshold_modification);
}
template <class Grid, class Implementation>
std::vector<double>
BlackoilModelBase<Grid, Implementation>::computeResidualNorms() const
{
std::vector<double> residualNorms;
std::vector<ADB>::const_iterator massBalanceIt = residual_.material_balance_eq.begin();
const std::vector<ADB>::const_iterator endMassBalanceIt = residual_.material_balance_eq.end();
for (; massBalanceIt != endMassBalanceIt; ++massBalanceIt) {
const double massBalanceResid = detail::infinityNorm( (*massBalanceIt),
linsolver_.parallelInformation() );
if (!std::isfinite(massBalanceResid)) {
OPM_THROW(Opm::NumericalProblem,
"Encountered a non-finite residual");
}
residualNorms.push_back(massBalanceResid);
}
// the following residuals are not used in the oscillation detection now
const double wellFluxResid = detail::infinityNormWell( residual_.well_flux_eq,
linsolver_.parallelInformation() );
if (!std::isfinite(wellFluxResid)) {
OPM_THROW(Opm::NumericalProblem,
"Encountered a non-finite residual");
}
residualNorms.push_back(wellFluxResid);
const double wellResid = detail::infinityNormWell( residual_.well_eq,
linsolver_.parallelInformation() );
if (!std::isfinite(wellResid)) {
OPM_THROW(Opm::NumericalProblem,
"Encountered a non-finite residual");
}
residualNorms.push_back(wellResid);
return residualNorms;
}
template <class Grid, class Implementation>
double
BlackoilModelBase<Grid, Implementation>::convergenceReduction(const Eigen::Array<double, Eigen::Dynamic, MaxNumPhases>& B,
const Eigen::Array<double, Eigen::Dynamic, MaxNumPhases>& tempV,
const Eigen::Array<double, Eigen::Dynamic, MaxNumPhases>& R,
std::array<double,MaxNumPhases>& R_sum,
std::array<double,MaxNumPhases>& maxCoeff,
std::array<double,MaxNumPhases>& B_avg,
std::vector<double>& maxNormWell,
int nc,
int nw) const
{
// Do the global reductions
#if HAVE_MPI
if ( linsolver_.parallelInformation().type() == typeid(ParallelISTLInformation) )
{
const ParallelISTLInformation& info =
boost::any_cast<const ParallelISTLInformation&>(linsolver_.parallelInformation());
// Compute the global number of cells and porevolume
std::vector<int> v(nc, 1);
auto nc_and_pv = std::tuple<int, double>(0, 0.0);
auto nc_and_pv_operators = std::make_tuple(Opm::Reduction::makeGlobalSumFunctor<int>(),
Opm::Reduction::makeGlobalSumFunctor<double>());
auto nc_and_pv_containers = std::make_tuple(v, geo_.poreVolume());
info.computeReduction(nc_and_pv_containers, nc_and_pv_operators, nc_and_pv);
for ( int idx=0; idx<MaxNumPhases; ++idx )
{
if (active_[idx]) {
auto values = std::tuple<double,double,double>(0.0 ,0.0 ,0.0);
auto containers = std::make_tuple(B.col(idx),
tempV.col(idx),
R.col(idx));
auto operators = std::make_tuple(Opm::Reduction::makeGlobalSumFunctor<double>(),
Opm::Reduction::makeGlobalMaxFunctor<double>(),
Opm::Reduction::makeGlobalSumFunctor<double>());
info.computeReduction(containers, operators, values);
B_avg[idx] = std::get<0>(values)/std::get<0>(nc_and_pv);
maxCoeff[idx] = std::get<1>(values);
R_sum[idx] = std::get<2>(values);
maxNormWell[idx] = 0.0;
for ( int w=0; w<nw; ++w )
{
maxNormWell[idx] = std::max(maxNormWell[idx], std::abs(residual_.well_flux_eq.value()[nw*idx + w]));
}
}
else
{
maxNormWell[idx] = R_sum[idx] = B_avg[idx] = maxCoeff[idx] = 0.0;
}
}
info.communicator().max(&maxNormWell[0], MaxNumPhases);
// Compute pore volume
return std::get<1>(nc_and_pv);
}
else
#endif
{
for ( int idx=0; idx<MaxNumPhases; ++idx )
{
if (active_[idx]) {
B_avg[idx] = B.col(idx).sum()/nc;
maxCoeff[idx]=tempV.col(idx).maxCoeff();
R_sum[idx] = R.col(idx).sum();
}
else
{
R_sum[idx] = B_avg[idx] = maxCoeff[idx] =0.0;
}
maxNormWell[idx] = 0.0;
for ( int w=0; w<nw; ++w )
{
maxNormWell[idx] = std::max(maxNormWell[idx], std::abs(residual_.well_flux_eq.value()[nw*idx + w]));
}
}
// Compute total pore volume
return geo_.poreVolume().sum();
}
}
template <class Grid, class Implementation>
bool
BlackoilModelBase<Grid, Implementation>::getConvergence(const double dt, const int iteration)
{
const double tol_mb = param_.tolerance_mb_;
const double tol_cnv = param_.tolerance_cnv_;
const double tol_wells = param_.tolerance_wells_;
const int nc = Opm::AutoDiffGrid::numCells(grid_);
const int nw = wellsActive() ? wells().number_of_wells : 0;
const Opm::PhaseUsage& pu = fluid_.phaseUsage();
const V pv = geo_.poreVolume();
const std::vector<PhasePresence> cond = phaseCondition();
std::array<double,MaxNumPhases> CNV = {{0., 0., 0.}};
std::array<double,MaxNumPhases> R_sum = {{0., 0., 0.}};
std::array<double,MaxNumPhases> B_avg = {{0., 0., 0.}};
std::array<double,MaxNumPhases> maxCoeff = {{0., 0., 0.}};
std::array<double,MaxNumPhases> mass_balance_residual = {{0., 0., 0.}};
std::array<double,MaxNumPhases> well_flux_residual = {{0., 0., 0.}};
std::size_t cols = MaxNumPhases; // needed to pass the correct type to Eigen
Eigen::Array<V::Scalar, Eigen::Dynamic, MaxNumPhases> B(nc, cols);
Eigen::Array<V::Scalar, Eigen::Dynamic, MaxNumPhases> R(nc, cols);
Eigen::Array<V::Scalar, Eigen::Dynamic, MaxNumPhases> tempV(nc, cols);
std::vector<double> maxNormWell(MaxNumPhases);
for ( int idx=0; idx<MaxNumPhases; ++idx )
{
if (active_[idx]) {
const int pos = pu.phase_pos[idx];
const ADB& tempB = rq_[pos].b;
B.col(idx) = 1./tempB.value();
R.col(idx) = residual_.material_balance_eq[idx].value();
tempV.col(idx) = R.col(idx).abs()/pv;
}
}
const double pvSum = convergenceReduction(B, tempV, R, R_sum, maxCoeff, B_avg,
maxNormWell, nc, nw);
bool converged_MB = true;
bool converged_CNV = true;
bool converged_Well = true;
// Finish computation
for ( int idx=0; idx<MaxNumPhases; ++idx )
{
CNV[idx] = B_avg[idx] * dt * maxCoeff[idx];
mass_balance_residual[idx] = std::abs(B_avg[idx]*R_sum[idx]) * dt / pvSum;
converged_MB = converged_MB && (mass_balance_residual[idx] < tol_mb);
converged_CNV = converged_CNV && (CNV[idx] < tol_cnv);
well_flux_residual[idx] = B_avg[idx] * maxNormWell[idx];
converged_Well = converged_Well && (well_flux_residual[idx] < tol_wells);
}
const double residualWell = detail::infinityNormWell(residual_.well_eq,
linsolver_.parallelInformation());
converged_Well = converged_Well && (residualWell < Opm::unit::barsa);
const bool converged = converged_MB && converged_CNV && converged_Well;
// if one of the residuals is NaN, throw exception, so that the solver can be restarted
if ( std::isnan(mass_balance_residual[Water]) || mass_balance_residual[Water] > maxResidualAllowed() ||
std::isnan(mass_balance_residual[Oil]) || mass_balance_residual[Oil] > maxResidualAllowed() ||
std::isnan(mass_balance_residual[Gas]) || mass_balance_residual[Gas] > maxResidualAllowed() ||
std::isnan(CNV[Water]) || CNV[Water] > maxResidualAllowed() ||
std::isnan(CNV[Oil]) || CNV[Oil] > maxResidualAllowed() ||
std::isnan(CNV[Gas]) || CNV[Gas] > maxResidualAllowed() ||
std::isnan(well_flux_residual[Water]) || well_flux_residual[Water] > maxResidualAllowed() ||
std::isnan(well_flux_residual[Oil]) || well_flux_residual[Oil] > maxResidualAllowed() ||
std::isnan(well_flux_residual[Gas]) || well_flux_residual[Gas] > maxResidualAllowed() ||
std::isnan(residualWell) || residualWell > maxResidualAllowed() )
{
OPM_THROW(Opm::NumericalProblem,"One of the residuals is NaN or too large!");
}
if ( terminal_output_ )
{
// Only rank 0 does print to std::cout
if (iteration == 0) {
std::cout << "\nIter MB(WATER) MB(OIL) MB(GAS) CNVW CNVO CNVG W-FLUX(W) W-FLUX(O) W-FLUX(G)\n";
}
const std::streamsize oprec = std::cout.precision(3);
const std::ios::fmtflags oflags = std::cout.setf(std::ios::scientific);
std::cout << std::setw(4) << iteration
<< std::setw(11) << mass_balance_residual[Water]
<< std::setw(11) << mass_balance_residual[Oil]
<< std::setw(11) << mass_balance_residual[Gas]
<< std::setw(11) << CNV[Water]
<< std::setw(11) << CNV[Oil]
<< std::setw(11) << CNV[Gas]
<< std::setw(11) << well_flux_residual[Water]
<< std::setw(11) << well_flux_residual[Oil]
<< std::setw(11) << well_flux_residual[Gas]
<< std::endl;
std::cout.precision(oprec);
std::cout.flags(oflags);
}
return converged;
}
template <class Grid, class Implementation>
bool
BlackoilModelBase<Grid, Implementation>::getWellConvergence(const int iteration)
{
const double tol_wells = param_.tolerance_wells_;
const int nc = Opm::AutoDiffGrid::numCells(grid_);
const int nw = wellsActive() ? wells().number_of_wells : 0;
const Opm::PhaseUsage& pu = fluid_.phaseUsage();
const V pv = geo_.poreVolume();
std::array<double,MaxNumPhases> R_sum = {{0., 0., 0.}};
std::array<double,MaxNumPhases> B_avg = {{0., 0., 0.}};
std::array<double,MaxNumPhases> maxCoeff = {{0., 0., 0.}};
std::array<double,MaxNumPhases> well_flux_residual = {{0., 0., 0.}};
std::size_t cols = MaxNumPhases; // needed to pass the correct type to Eigen
Eigen::Array<V::Scalar, Eigen::Dynamic, MaxNumPhases> B(nc, cols);
Eigen::Array<V::Scalar, Eigen::Dynamic, MaxNumPhases> R(nc, cols);
Eigen::Array<V::Scalar, Eigen::Dynamic, MaxNumPhases> tempV(nc, cols);
std::vector<double> maxNormWell(MaxNumPhases);
for ( int idx=0; idx<MaxNumPhases; ++idx )
{
if (active_[idx]) {
const int pos = pu.phase_pos[idx];
const ADB& tempB = rq_[pos].b;
B.col(idx) = 1./tempB.value();
R.col(idx) = residual_.material_balance_eq[idx].value();
tempV.col(idx) = R.col(idx).abs()/pv;
}
}
convergenceReduction(B, tempV, R, R_sum, maxCoeff, B_avg, maxNormWell, nc, nw);
bool converged_Well = true;
// Finish computation
for ( int idx=0; idx<MaxNumPhases; ++idx )
{
well_flux_residual[idx] = B_avg[idx] * maxNormWell[idx];
converged_Well = converged_Well && (well_flux_residual[idx] < tol_wells);
}
const double residualWell = detail::infinityNormWell(residual_.well_eq,
linsolver_.parallelInformation());
converged_Well = converged_Well && (residualWell < Opm::unit::barsa);
const bool converged = converged_Well;
// if one of the residuals is NaN, throw exception, so that the solver can be restarted
if (std::isnan(well_flux_residual[Water]) || well_flux_residual[Water] > maxResidualAllowed() ||
std::isnan(well_flux_residual[Oil]) || well_flux_residual[Oil] > maxResidualAllowed() ||
std::isnan(well_flux_residual[Gas]) || well_flux_residual[Gas] > maxResidualAllowed() )
{
OPM_THROW(Opm::NumericalProblem,"One of the well residuals is NaN or too large!");
}
if ( terminal_output_ )
{
// Only rank 0 does print to std::cout
if (iteration == 0) {
std::cout << "\nIter W-FLUX(W) W-FLUX(O) W-FLUX(G)\n";
}
const std::streamsize oprec = std::cout.precision(3);
const std::ios::fmtflags oflags = std::cout.setf(std::ios::scientific);
std::cout << std::setw(4) << iteration
<< std::setw(11) << well_flux_residual[Water]
<< std::setw(11) << well_flux_residual[Oil]
<< std::setw(11) << well_flux_residual[Gas]
<< std::endl;
std::cout.precision(oprec);
std::cout.flags(oflags);
}
return converged;
}
template <class Grid, class Implementation>
ADB
BlackoilModelBase<Grid, Implementation>::fluidViscosity(const int phase,
const ADB& p ,
const ADB& temp ,
const ADB& rs ,
const ADB& rv ,
const std::vector<PhasePresence>& cond) const
{
switch (phase) {
case Water:
return fluid_.muWat(p, temp, cells_);
case Oil:
return fluid_.muOil(p, temp, rs, cond, cells_);
case Gas:
return fluid_.muGas(p, temp, rv, cond, cells_);
default:
OPM_THROW(std::runtime_error, "Unknown phase index " << phase);
}
}
template <class Grid, class Implementation>
ADB
BlackoilModelBase<Grid, Implementation>::fluidReciprocFVF(const int phase,
const ADB& p ,
const ADB& temp ,
const ADB& rs ,
const ADB& rv ,
const std::vector<PhasePresence>& cond) const
{
switch (phase) {
case Water:
return fluid_.bWat(p, temp, cells_);
case Oil:
return fluid_.bOil(p, temp, rs, cond, cells_);
case Gas:
return fluid_.bGas(p, temp, rv, cond, cells_);
default:
OPM_THROW(std::runtime_error, "Unknown phase index " << phase);
}
}
template <class Grid, class Implementation>
ADB
BlackoilModelBase<Grid, Implementation>::fluidDensity(const int phase,
const ADB& b,
const ADB& rs,
const ADB& rv) const
{
const double* rhos = fluid_.surfaceDensity();
ADB rho = rhos[phase] * b;
if (phase == Oil && active_[Gas]) {
// It is correct to index into rhos with canonical phase indices.
rho += rhos[Gas] * rs * b;
}
if (phase == Gas && active_[Oil]) {
// It is correct to index into rhos with canonical phase indices.
rho += rhos[Oil] * rv * b;
}
return rho;
}
template <class Grid, class Implementation>
V
BlackoilModelBase<Grid, Implementation>::fluidRsSat(const V& p,
const V& satOil,
const std::vector<int>& cells) const
{
return fluid_.rsSat(ADB::constant(p), ADB::constant(satOil), cells).value();
}
template <class Grid, class Implementation>
ADB
BlackoilModelBase<Grid, Implementation>::fluidRsSat(const ADB& p,
const ADB& satOil,
const std::vector<int>& cells) const
{
return fluid_.rsSat(p, satOil, cells);
}
template <class Grid, class Implementation>
V
BlackoilModelBase<Grid, Implementation>::fluidRvSat(const V& p,
const V& satOil,
const std::vector<int>& cells) const
{
return fluid_.rvSat(ADB::constant(p), ADB::constant(satOil), cells).value();
}
template <class Grid, class Implementation>
ADB
BlackoilModelBase<Grid, Implementation>::fluidRvSat(const ADB& p,
const ADB& satOil,
const std::vector<int>& cells) const
{
return fluid_.rvSat(p, satOil, cells);
}
template <class Grid, class Implementation>
ADB
BlackoilModelBase<Grid, Implementation>::poroMult(const ADB& p) const
{
const int n = p.size();
if (rock_comp_props_ && rock_comp_props_->isActive()) {
V pm(n);
V dpm(n);
for (int i = 0; i < n; ++i) {
pm[i] = rock_comp_props_->poroMult(p.value()[i]);
dpm[i] = rock_comp_props_->poroMultDeriv(p.value()[i]);
}
ADB::M dpm_diag = spdiag(dpm);
const int num_blocks = p.numBlocks();
std::vector<ADB::M> jacs(num_blocks);
for (int block = 0; block < num_blocks; ++block) {
fastSparseProduct(dpm_diag, p.derivative()[block], jacs[block]);
}
return ADB::function(std::move(pm), std::move(jacs));
} else {
return ADB::constant(V::Constant(n, 1.0));
}
}
template <class Grid, class Implementation>
ADB
BlackoilModelBase<Grid, Implementation>::transMult(const ADB& p) const
{
const int n = p.size();
if (rock_comp_props_ && rock_comp_props_->isActive()) {
V tm(n);
V dtm(n);
for (int i = 0; i < n; ++i) {
tm[i] = rock_comp_props_->transMult(p.value()[i]);
dtm[i] = rock_comp_props_->transMultDeriv(p.value()[i]);
}
ADB::M dtm_diag = spdiag(dtm);
const int num_blocks = p.numBlocks();
std::vector<ADB::M> jacs(num_blocks);
for (int block = 0; block < num_blocks; ++block) {
fastSparseProduct(dtm_diag, p.derivative()[block], jacs[block]);
}
return ADB::function(std::move(tm), std::move(jacs));
} else {
return ADB::constant(V::Constant(n, 1.0));
}
}
template <class Grid, class Implementation>
void
BlackoilModelBase<Grid, Implementation>::classifyCondition(const ReservoirState& state)
{
using namespace Opm::AutoDiffGrid;
const int nc = numCells(grid_);
const int np = state.numPhases();
const PhaseUsage& pu = fluid_.phaseUsage();
const DataBlock s = Eigen::Map<const DataBlock>(& state.saturation()[0], nc, np);
if (active_[ Gas ]) {
// Oil/Gas or Water/Oil/Gas system
const V so = s.col(pu.phase_pos[ Oil ]);
const V sg = s.col(pu.phase_pos[ Gas ]);
for (V::Index c = 0, e = sg.size(); c != e; ++c) {
if (so[c] > 0) { phaseCondition_[c].setFreeOil (); }
if (sg[c] > 0) { phaseCondition_[c].setFreeGas (); }
if (active_[ Water ]) { phaseCondition_[c].setFreeWater(); }
}
}
else {
// Water/Oil system
assert (active_[ Water ]);
const V so = s.col(pu.phase_pos[ Oil ]);
for (V::Index c = 0, e = so.size(); c != e; ++c) {
phaseCondition_[c].setFreeWater();
if (so[c] > 0) { phaseCondition_[c].setFreeOil(); }
}
}
}
template <class Grid, class Implementation>
void
BlackoilModelBase<Grid, Implementation>::updatePrimalVariableFromState(const ReservoirState& state)
{
using namespace Opm::AutoDiffGrid;
const int nc = numCells(grid_);
const int np = state.numPhases();
const PhaseUsage& pu = fluid_.phaseUsage();
const DataBlock s = Eigen::Map<const DataBlock>(& state.saturation()[0], nc, np);
// Water/Oil/Gas system
assert (active_[ Gas ]);
// reset the primary variables if RV and RS is not set Sg is used as primary variable.
primalVariable_.resize(nc);
std::fill(primalVariable_.begin(), primalVariable_.end(), PrimalVariables::Sg);
const V sg = s.col(pu.phase_pos[ Gas ]);
const V so = s.col(pu.phase_pos[ Oil ]);
const V sw = s.col(pu.phase_pos[ Water ]);
const double epsilon = std::sqrt(std::numeric_limits<double>::epsilon());
auto watOnly = sw > (1 - epsilon);
auto hasOil = so > 0;
auto hasGas = sg > 0;
// For oil only cells Rs is used as primal variable. For cells almost full of water
// the default primal variable (Sg) is used.
if (has_disgas_) {
for (V::Index c = 0, e = sg.size(); c != e; ++c) {
if ( !watOnly[c] && hasOil[c] && !hasGas[c] ) {primalVariable_[c] = PrimalVariables::RS; }
}
}
// For gas only cells Rv is used as primal variable. For cells almost full of water
// the default primal variable (Sg) is used.
if (has_vapoil_) {
for (V::Index c = 0, e = so.size(); c != e; ++c) {
if ( !watOnly[c] && hasGas[c] && !hasOil[c] ) {primalVariable_[c] = PrimalVariables::RV; }
}
}
updatePhaseCondFromPrimalVariable();
}
/// Update the phaseCondition_ member based on the primalVariable_ member.
template <class Grid, class Implementation>
void
BlackoilModelBase<Grid, Implementation>::updatePhaseCondFromPrimalVariable()
{
if (! active_[Gas]) {
OPM_THROW(std::logic_error, "updatePhaseCondFromPrimarVariable() logic requires active gas phase.");
}
const int nc = primalVariable_.size();
isRs_ = V::Zero(nc);
isRv_ = V::Zero(nc);
isSg_ = V::Zero(nc);
for (int c = 0; c < nc; ++c) {
phaseCondition_[c] = PhasePresence(); // No free phases.
phaseCondition_[c].setFreeWater(); // Not necessary for property calculation usage.
switch (primalVariable_[c]) {
case PrimalVariables::Sg:
phaseCondition_[c].setFreeOil();
phaseCondition_[c].setFreeGas();
isSg_[c] = 1;
break;
case PrimalVariables::RS:
phaseCondition_[c].setFreeOil();
isRs_[c] = 1;
break;
case PrimalVariables::RV:
phaseCondition_[c].setFreeGas();
isRv_[c] = 1;
break;
default:
OPM_THROW(std::logic_error, "Unknown primary variable enum value in cell " << c << ": " << primalVariable_[c]);
}
}
}
} // namespace Opm
#endif // OPM_BLACKOILMODELBASE_IMPL_HEADER_INCLUDED
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