opm-simulators/opm/autodiff/SimulatorFullyImplicitBlackoilEbos.hpp

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/*
Copyright 2013, 2015 SINTEF ICT, Applied Mathematics.
Copyright 2015 Andreas Lauser
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_SIMULATORFULLYIMPLICITBLACKOIL_HEADER_INCLUDED
#define OPM_SIMULATORFULLYIMPLICITBLACKOIL_HEADER_INCLUDED
#include <opm/autodiff/SimulatorBase.hpp>
#include <opm/autodiff/NonlinearSolver.hpp>
#include <opm/autodiff/BlackoilModelEbos.hpp>
#include <opm/autodiff/BlackoilModelParameters.hpp>
namespace Opm {
class SimulatorFullyImplicitBlackoilEbos;
class StandardWells;
/// a simulator for the blackoil model
class SimulatorFullyImplicitBlackoilEbos
{
public:
typedef typename TTAG(EclFlowProblem) TypeTag;
typedef typename GET_PROP_TYPE(TypeTag, Simulator) Simulator;
typedef typename GET_PROP_TYPE(TypeTag, Grid) Grid;
typedef WellStateFullyImplicitBlackoil WellState;
typedef BlackoilState ReservoirState;
typedef BlackoilOutputWriter OutputWriter;
typedef BlackoilModelEbos Model;
typedef BlackoilModelParameters ModelParameters;
typedef NonlinearSolver<Model> Solver;
typedef StandardWells WellModel;
/// Initialise from parameters and objects to observe.
/// \param[in] param parameters, this class accepts the following:
/// parameter (default) effect
/// -----------------------------------------------------------
/// output (true) write output to files?
/// output_dir ("output") output directoty
/// output_interval (1) output every nth step
/// nl_pressure_residual_tolerance (0.0) pressure solver residual tolerance (in Pascal)
/// nl_pressure_change_tolerance (1.0) pressure solver change tolerance (in Pascal)
/// nl_pressure_maxiter (10) max nonlinear iterations in pressure
/// nl_maxiter (30) max nonlinear iterations in transport
/// nl_tolerance (1e-9) transport solver absolute residual tolerance
/// num_transport_substeps (1) number of transport steps per pressure step
/// use_segregation_split (false) solve for gravity segregation (if false,
/// segregation is ignored).
///
/// \param[in] geo derived geological properties
/// \param[in] props fluid and rock properties
/// \param[in] rock_comp_props if non-null, rock compressibility properties
/// \param[in] linsolver linear solver
/// \param[in] gravity if non-null, gravity vector
/// \param[in] has_disgas true for dissolved gas option
/// \param[in] has_vapoil true for vaporized oil option
/// \param[in] eclipse_state the object which represents an internalized ECL deck
/// \param[in] output_writer
/// \param[in] threshold_pressures_by_face if nonempty, threshold pressures that inhibit flow
SimulatorFullyImplicitBlackoilEbos(Simulator& ebosSimulator,
const parameter::ParameterGroup& param,
DerivedGeology& geo,
BlackoilPropsAdInterface& props,
const RockCompressibility* rock_comp_props,
NewtonIterationBlackoilInterface& linsolver,
const double* gravity,
const bool has_disgas,
const bool has_vapoil,
std::shared_ptr<EclipseState> eclipse_state,
BlackoilOutputWriter& output_writer,
const std::vector<double>& threshold_pressures_by_face)
: ebosSimulator_(ebosSimulator),
param_(param),
model_param_(param),
solver_param_(param),
props_(props),
rock_comp_props_(rock_comp_props),
gravity_(gravity),
geo_(geo),
solver_(linsolver),
has_disgas_(has_disgas),
has_vapoil_(has_vapoil),
terminal_output_(param.getDefault("output_terminal", true)),
output_writer_(output_writer),
threshold_pressures_by_face_(threshold_pressures_by_face),
is_parallel_run_( false )
{
// Misc init.
const int num_cells = AutoDiffGrid::numCells(grid());
allcells_.resize(num_cells);
for (int cell = 0; cell < num_cells; ++cell) {
allcells_[cell] = cell;
}
rateConverter_.reset(new RateConverterType(props_, std::vector<int>(AutoDiffGrid::numCells(grid()), 0)));
#if HAVE_MPI
if ( solver_.parallelInformation().type() == typeid(ParallelISTLInformation) )
{
const ParallelISTLInformation& info =
boost::any_cast<const ParallelISTLInformation&>(solver_.parallelInformation());
// Only rank 0 does print to std::cout
terminal_output_ = terminal_output_ && ( info.communicator().rank() == 0 );
is_parallel_run_ = ( info.communicator().size() > 1 );
}
#endif
}
/// Run the simulation.
/// This will run succesive timesteps until timer.done() is true. It will
/// modify the reservoir and well states.
/// \param[in,out] timer governs the requested reporting timesteps
/// \param[in,out] state state of reservoir: pressure, fluxes
/// \return simulation report, with timing data
SimulatorReport run(SimulatorTimer& timer,
ReservoirState& state)
{
WellState prev_well_state;
if (output_writer_.isRestart()) {
// This is a restart, populate WellState and ReservoirState state objects from restart file
output_writer_.initFromRestartFile(props_.phaseUsage(), props_.permeability(), grid(), state, prev_well_state);
initHydroCarbonState(state, props_.phaseUsage(), Opm::UgGridHelpers::numCells(grid()), has_disgas_, has_vapoil_);
}
// Create timers and file for writing timing info.
Opm::time::StopWatch solver_timer;
double stime = 0.0;
Opm::time::StopWatch step_timer;
Opm::time::StopWatch total_timer;
total_timer.start();
std::string tstep_filename = output_writer_.outputDirectory() + "/step_timing.txt";
std::ofstream tstep_os(tstep_filename.c_str());
const auto& schedule = eclState()->getSchedule();
const auto& events = schedule->getEvents();
// adaptive time stepping
std::unique_ptr< AdaptiveTimeStepping > adaptiveTimeStepping;
if( param_.getDefault("timestep.adaptive", true ) )
{
adaptiveTimeStepping.reset( new AdaptiveTimeStepping( param_, terminal_output_ ) );
}
output_writer_.writeInit( geo_.simProps(grid()) , geo_.nonCartesianConnections( ) );
std::string restorefilename = param_.getDefault("restorefile", std::string("") );
if( ! restorefilename.empty() )
{
// -1 means that we'll take the last report step that was written
const int desiredRestoreStep = param_.getDefault("restorestep", int(-1) );
output_writer_.restore( timer,
state,
prev_well_state,
restorefilename,
desiredRestoreStep );
}
unsigned int totalLinearizations = 0;
unsigned int totalNonlinearIterations = 0;
unsigned int totalLinearIterations = 0;
bool is_well_potentials_computed = param_.getDefault("compute_well_potentials", false );
std::vector<double> well_potentials;
DynamicListEconLimited dynamic_list_econ_limited;
// Main simulation loop.
while (!timer.done()) {
// Report timestep.
step_timer.start();
if ( terminal_output_ )
{
std::ostringstream ss;
timer.report(ss);
OpmLog::note(ss.str());
}
// Create wells and well state.
WellsManager wells_manager(eclState(),
timer.currentStepNum(),
Opm::UgGridHelpers::numCells(grid()),
Opm::UgGridHelpers::globalCell(grid()),
Opm::UgGridHelpers::cartDims(grid()),
Opm::UgGridHelpers::dimensions(grid()),
Opm::UgGridHelpers::cell2Faces(grid()),
Opm::UgGridHelpers::beginFaceCentroids(grid()),
props_.permeability(),
dynamic_list_econ_limited,
is_parallel_run_,
well_potentials);
const Wells* wells = wells_manager.c_wells();
WellState well_state;
well_state.init(wells, state, prev_well_state);
// give the polymer and surfactant simulators the chance to do their stuff
handleAdditionalWellInflow(timer, wells_manager, well_state, wells);
// write the inital state at the report stage
if (timer.initialStep()) {
output_writer_.writeTimeStep( timer, state, well_state );
}
// Compute reservoir volumes for RESV controls.
computeRESV(timer.currentStepNum(), wells, state, well_state);
// Run a multiple steps of the solver depending on the time step control.
solver_timer.start();
const WellModel well_model(wells);
auto solver = createSolver(well_model);
if( terminal_output_ )
{
std::ostringstream step_msg;
boost::posix_time::time_facet* facet = new boost::posix_time::time_facet("%d-%b-%Y");
step_msg.imbue(std::locale(std::locale::classic(), facet));
step_msg << "\nTime step " << std::setw(4) <<timer.currentStepNum()
<< " at day " << (double)unit::convert::to(timer.simulationTimeElapsed(), unit::day)
<< "/" << (double)unit::convert::to(timer.totalTime(), unit::day)
<< ", date = " << timer.currentDateTime()
<< "\n";
OpmLog::info(step_msg.str());
}
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solver->model().beginReportStep();
// If sub stepping is enabled allow the solver to sub cycle
// in case the report steps are too large for the solver to converge
//
// \Note: The report steps are met in any case
// \Note: The sub stepping will require a copy of the state variables
if( adaptiveTimeStepping ) {
adaptiveTimeStepping->step( timer, *solver, state, well_state, output_writer_ );
}
else {
// solve for complete report step
solver->step(timer, state, well_state);
if( terminal_output_ )
{
std::ostringstream iter_msg;
iter_msg << "Stepsize " << (double)unit::convert::to(timer.currentStepLength(), unit::day);
if (solver->wellIterations() != 0) {
iter_msg << " days well iterations = " << solver->wellIterations() << ", ";
}
iter_msg << "non-linear iterations = " << solver->nonlinearIterations()
<< ", total linear iterations = " << solver->linearIterations()
<< "\n";
OpmLog::info(iter_msg.str());
}
}
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solver->model().endReportStep();
// update the derived geology (transmissibilities, pore volumes, etc) if the
// has geology changed for the next report step
const int nextTimeStepIdx = timer.currentStepNum() + 1;
if (nextTimeStepIdx < timer.numSteps()
&& events.hasEvent(ScheduleEvents::GEO_MODIFIER, nextTimeStepIdx)) {
// bring the contents of the keywords to the current state of the SCHEDULE
// section
//
// TODO (?): handle the parallel case (maybe this works out of the box)
DeckConstPtr miniDeck = schedule->getModifierDeck(nextTimeStepIdx);
eclState()->applyModifierDeck(*miniDeck);
geo_.update(grid(), props_, eclState(), gravity_);
}
// take time that was used to solve system for this reportStep
solver_timer.stop();
// accumulate the number of nonlinear and linear Iterations
totalLinearizations += solver->linearizations();
totalNonlinearIterations += solver->nonlinearIterations();
totalLinearIterations += solver->linearIterations();
// Report timing.
const double st = solver_timer.secsSinceStart();
// accumulate total time
stime += st;
if ( terminal_output_ )
{
std::string msg;
msg = "Fully implicit solver took: " + std::to_string(st) + " seconds. Total solver time taken: " + std::to_string(stime) + " seconds.";
OpmLog::note(msg);
}
if ( output_writer_.output() ) {
SimulatorReport step_report;
step_report.pressure_time = st;
step_report.total_time = step_timer.secsSinceStart();
step_report.reportParam(tstep_os);
}
// Increment timer, remember well state.
++timer;
// write simulation state at the report stage
output_writer_.writeTimeStep( timer, state, well_state );
prev_well_state = well_state;
// The well potentials are only computed if they are needed
// For now thay are only used to determine default guide rates for group controlled wells
if ( is_well_potentials_computed ) {
computeWellPotentials(wells, well_state, well_potentials);
}
updateListEconLimited(solver, eclState()->getSchedule(), timer.currentStepNum(), wells,
well_state, dynamic_list_econ_limited);
}
// Stop timer and create timing report
total_timer.stop();
SimulatorReport report;
report.pressure_time = stime;
report.transport_time = 0.0;
report.total_time = total_timer.secsSinceStart();
report.total_linearizations = totalLinearizations;
report.total_newton_iterations = totalNonlinearIterations;
report.total_linear_iterations = totalLinearIterations;
return report;
}
const Grid& grid() const
{ return ebosSimulator_.gridManager().grid(); }
protected:
void handleAdditionalWellInflow(SimulatorTimer& timer,
WellsManager& wells_manager,
WellState& well_state,
const Wells* wells)
{ }
std::unique_ptr<Solver> createSolver(const WellModel& well_model)
{
auto model = std::unique_ptr<Model>(new Model(ebosSimulator_,
model_param_,
props_,
geo_,
rock_comp_props_,
well_model,
solver_,
terminal_output_));
return std::unique_ptr<Solver>(new Solver(solver_param_, std::move(model)));
}
void computeRESV(const std::size_t step,
const Wells* wells,
const BlackoilState& x,
WellState& xw)
{
typedef SimFIBODetails::WellMap WellMap;
const auto w_ecl = eclState()->getSchedule()->getWells(step);
const WellMap& wmap = SimFIBODetails::mapWells(w_ecl);
const std::vector<int>& resv_wells = SimFIBODetails::resvWells(wells, step, wmap);
const std::size_t number_resv_wells = resv_wells.size();
std::size_t global_number_resv_wells = number_resv_wells;
#if HAVE_MPI
if ( solver_.parallelInformation().type() == typeid(ParallelISTLInformation) )
{
const auto& info =
boost::any_cast<const ParallelISTLInformation&>(solver_.parallelInformation());
global_number_resv_wells = info.communicator().sum(global_number_resv_wells);
if ( global_number_resv_wells )
{
// At least one process has resv wells. Therefore rate converter needs
// to calculate averages over regions that might cross process
// borders. This needs to be done by all processes and therefore
// outside of the next if statement.
rateConverter_->defineState(x, boost::any_cast<const ParallelISTLInformation&>(solver_.parallelInformation()));
}
}
else
#endif
{
if ( global_number_resv_wells )
{
rateConverter_->defineState(x);
}
}
if (! resv_wells.empty()) {
const PhaseUsage& pu = props_.phaseUsage();
const std::vector<double>::size_type np = props_.numPhases();
std::vector<double> distr (np);
std::vector<double> hrates(np);
std::vector<double> prates(np);
for (std::vector<int>::const_iterator
rp = resv_wells.begin(), e = resv_wells.end();
rp != e; ++rp)
{
WellControls* ctrl = wells->ctrls[*rp];
const bool is_producer = wells->type[*rp] == PRODUCER;
// RESV control mode, all wells
{
const int rctrl = SimFIBODetails::resv_control(ctrl);
if (0 <= rctrl) {
const std::vector<double>::size_type off = (*rp) * np;
if (is_producer) {
// Convert to positive rates to avoid issues
// in coefficient calculations.
std::transform(xw.wellRates().begin() + (off + 0*np),
xw.wellRates().begin() + (off + 1*np),
prates.begin(), std::negate<double>());
} else {
std::copy(xw.wellRates().begin() + (off + 0*np),
xw.wellRates().begin() + (off + 1*np),
prates.begin());
}
const int fipreg = 0; // Hack. Ignore FIP regions.
rateConverter_->calcCoeff(prates, fipreg, distr);
well_controls_iset_distr(ctrl, rctrl, & distr[0]);
}
}
// RESV control, WCONHIST wells. A bit of duplicate
// work, regrettably.
if (is_producer && wells->name[*rp] != 0) {
WellMap::const_iterator i = wmap.find(wells->name[*rp]);
if (i != wmap.end()) {
const auto* wp = i->second;
const WellProductionProperties& p =
wp->getProductionProperties(step);
if (! p.predictionMode) {
// History matching (WCONHIST/RESV)
SimFIBODetails::historyRates(pu, p, hrates);
const int fipreg = 0; // Hack. Ignore FIP regions.
rateConverter_->calcCoeff(hrates, fipreg, distr);
// WCONHIST/RESV target is sum of all
// observed phase rates translated to
// reservoir conditions. Recall sign
// convention: Negative for producers.
const double target =
- std::inner_product(distr.begin(), distr.end(),
hrates.begin(), 0.0);
well_controls_clear(ctrl);
well_controls_assert_number_of_phases(ctrl, int(np));
static const double invalid_alq = -std::numeric_limits<double>::max();
static const int invalid_vfp = -std::numeric_limits<int>::max();
const int ok_resv =
well_controls_add_new(RESERVOIR_RATE, target,
invalid_alq, invalid_vfp,
& distr[0], ctrl);
// For WCONHIST the BHP limit is set to 1 atm.
// or a value specified using WELTARG
double bhp_limit = (p.BHPLimit > 0) ? p.BHPLimit : unit::convert::from(1.0, unit::atm);
const int ok_bhp =
well_controls_add_new(BHP, bhp_limit,
invalid_alq, invalid_vfp,
NULL, ctrl);
if (ok_resv != 0 && ok_bhp != 0) {
xw.currentControls()[*rp] = 0;
well_controls_set_current(ctrl, 0);
}
}
}
}
}
}
if( wells )
{
for (int w = 0, nw = wells->number_of_wells; w < nw; ++w) {
WellControls* ctrl = wells->ctrls[w];
const bool is_producer = wells->type[w] == PRODUCER;
if (!is_producer && wells->name[w] != 0) {
WellMap::const_iterator i = wmap.find(wells->name[w]);
if (i != wmap.end()) {
const auto* wp = i->second;
const WellInjectionProperties& injector = wp->getInjectionProperties(step);
if (!injector.predictionMode) {
//History matching WCONINJEH
static const double invalid_alq = -std::numeric_limits<double>::max();
static const int invalid_vfp = -std::numeric_limits<int>::max();
// For WCONINJEH the BHP limit is set to a large number
// or a value specified using WELTARG
double bhp_limit = (injector.BHPLimit > 0) ? injector.BHPLimit : std::numeric_limits<double>::max();
const int ok_bhp =
well_controls_add_new(BHP, bhp_limit,
invalid_alq, invalid_vfp,
NULL, ctrl);
if (!ok_bhp) {
OPM_THROW(std::runtime_error, "Failed to add well control.");
}
}
}
}
}
}
}
void computeWellPotentials(const Wells* wells,
const WellState& xw,
std::vector<double>& well_potentials)
{
const int nw = wells->number_of_wells;
const int np = wells->number_of_phases;
well_potentials.clear();
well_potentials.resize(nw*np,0.0);
for (int w = 0; w < nw; ++w) {
for (int perf = wells->well_connpos[w]; perf < wells->well_connpos[w + 1]; ++perf) {
for (int phase = 0; phase < np; ++phase) {
well_potentials[w*np + phase] += xw.wellPotentials()[perf*np + phase];
}
}
}
}
void updateListEconLimited(const std::unique_ptr<Solver>& solver,
ScheduleConstPtr schedule,
const int current_step,
const Wells* wells,
const WellState& well_state,
DynamicListEconLimited& list_econ_limited) const
{
solver->model().wellModel().updateListEconLimited(schedule, current_step, wells,
well_state, list_econ_limited);
}
EclipseStateConstPtr eclState() const
{ return ebosSimulator_.gridManager().eclState(); }
EclipseStatePtr eclState()
{ return ebosSimulator_.gridManager().eclState(); }
// Data.
Simulator& ebosSimulator_;
typedef RateConverter::
SurfaceToReservoirVoidage< BlackoilPropsAdInterface,
std::vector<int> > RateConverterType;
typedef typename Solver::SolverParameters SolverParameters;
const parameter::ParameterGroup param_;
ModelParameters model_param_;
SolverParameters solver_param_;
// Observed objects.
BlackoilPropsAdInterface& props_;
const RockCompressibility* rock_comp_props_;
const double* gravity_;
// Solvers
DerivedGeology& geo_;
NewtonIterationBlackoilInterface& solver_;
// Misc. data
std::vector<int> allcells_;
const bool has_disgas_;
const bool has_vapoil_;
bool terminal_output_;
// output_writer
OutputWriter& output_writer_;
std::unique_ptr<RateConverterType> rateConverter_;
// Threshold pressures.
std::vector<double> threshold_pressures_by_face_;
// Whether this a parallel simulation or not
bool is_parallel_run_;
};
} // namespace Opm
#endif // OPM_SIMULATORFULLYIMPLICITBLACKOIL_HEADER_INCLUDED