OilfieldToolsNet/opm-simulators
4
0
Fork 0
mirror of https://github.com/OPM/opm-simulators.git synced 2025-01-15 22:41:55 -06:00
Code Issues Packages Projects Releases Wiki Activity

updating updateWellControls()

Browse Source 
modified to no longer update primary variables, and moved to earlier
in assemble()
This commit is contained in:
Kai Bao 2015-05-08 12:50:17 +02:00
parent b46dcc3b76
commit 110dde2bb5
2 changed files with 45 additions and 74 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
opm/polymer/fullyimplicit/FullyImplicitBlackoilPolymerSolver.hpp
View File

@ -260,9 +260,7 @@ namespace Opm {
V& aliveWells,
const std::vector<double>& polymer_inflow);
void updateWellControls(ADB& bhp,
ADB& well_phase_flow_rate,
WellStateFullyImplicitBlackoil& xw) const;
void updateWellControls(WellStateFullyImplicitBlackoil& xw) const;
void
assemble(const V& dtpv,

115
opm/polymer/fullyimplicit/FullyImplicitBlackoilPolymerSolver_impl.hpp
View File

@ -836,6 +836,11 @@ namespace detail {
const std::vector<double>& polymer_inflow)
{
using namespace Opm::AutoDiffGrid;
// Possibly switch well controls and updating well state to
// get reasonable initial conditions for the wells
updateWellControls(xw);
// Create the primary variables.
SolutionState state = variableState(x, xw);
@ -872,7 +877,6 @@ namespace detail {
// for each active phase.
const V transi = subset(geo_.transmissibility(), ops_.internal_faces);
const std::vector<ADB> kr = computeRelPerm(state);
// computeMassFlux(transi, kr, state.canonical_phase_pressures, state);
for (int phaseIdx = 0; phaseIdx < fluid_.numPhases(); ++phaseIdx) {
computeMassFlux(phaseIdx, transi, kr[canph_[phaseIdx]], state.canonical_phase_pressures[canph_[phaseIdx]], state);
residual_.material_balance_eq[ phaseIdx ] =
@ -909,9 +913,8 @@ namespace detail {
residual_.material_balance_eq[poly_pos_] = pvdt*(rq_[poly_pos_].accum[1] - rq_[poly_pos_].accum[0])
+ ops_.div*rq_[poly_pos_].mflux;
}
// Note: updateWellControls() can change all its arguments if
// a well control is switched.
updateWellControls(state.bhp, state.qs, xw);
// Add contribution from wells and set up the well equations.
V aliveWells;
addWellEq(state, xw, aliveWells, polymer_inflow);
addWellControlEq(state, xw, aliveWells);
@ -1152,23 +1155,22 @@ namespace detail {
namespace detail
{
double rateToCompare(const ADB& well_phase_flow_rate,
double rateToCompare(const std::vector<double>& well_phase_flow_rate,
const int well,
const int num_phases,
const double* distr)
{
const int num_wells = well_phase_flow_rate.size() / num_phases;
double rate = 0.0;
for (int phase = 0; phase < num_phases; ++phase) {
// Important: well_phase_flow_rate is ordered with all rates for first
// phase coming first, then all for second phase etc.
rate += well_phase_flow_rate.value()[well + phase*num_wells] * distr[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 ADB& bhp,
const ADB& well_phase_flow_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,
@ -1186,7 +1188,7 @@ namespace detail {
{
switch (ctrl_type) {
case BHP:
broken = bhp.value()[well] > target;
broken = bhp[well] > target;
break;
case RESERVOIR_RATE: // Intentional fall-through
@ -1202,7 +1204,7 @@ namespace detail {
{
switch (ctrl_type) {
case BHP:
broken = bhp.value()[well] < target;
broken = bhp[well] < target;
break;
case RESERVOIR_RATE: // Intentional fall-through
@ -1226,12 +1228,8 @@ namespace detail {
} // namespace detail
template<class T>
void FullyImplicitBlackoilPolymerSolver<T>::updateWellControls(ADB& bhp,
ADB& well_phase_flow_rate,
WellStateFullyImplicitBlackoil& xw) const
void FullyImplicitBlackoilPolymerSolver<T>::updateWellControls(WellStateFullyImplicitBlackoil& xw) const
{
if( ! wellsActive() ) return ;
@ -1240,14 +1238,12 @@ namespace detail {
// switch control to first broken constraint.
const int np = wells().number_of_phases;
const int nw = wells().number_of_wells;
bool bhp_changed = false;
bool rates_changed = false;
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];
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.
@ -1260,7 +1256,7 @@ namespace detail {
// inequality constraint, and therefore skipped.
continue;
}
if (detail::constraintBroken(bhp, well_phase_flow_rate, w, np, wells().type[w], wc, ctrl_index)) {
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;
}
@ -1274,62 +1270,39 @@ namespace detail {
<< " to " << modestring[well_controls_iget_type(wc, ctrl_index)] << std::endl;
}
xw.currentControls()[w] = ctrl_index;
// Also updating well state and primary variables.
// We can only be switching to BHP and SURFACE_RATE
// controls since we do not support RESERVOIR_RATE.
const double target = well_controls_iget_target(wc, ctrl_index);
const double* distr = well_controls_iget_distr(wc, ctrl_index);
switch (well_controls_iget_type(wc, ctrl_index)) {
case BHP:
xw.bhp()[w] = target;
bhp_changed = true;
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.
//
// Just record the fact that we need to recompute
// the 'well_phase_flow_rate'.
rates_changed = true;
break;
case SURFACE_RATE:
for (int phase = 0; phase < np; ++phase) {
if (distr[phase] > 0.0) {
xw.wellRates()[np*w + phase] = target * distr[phase];
}
}
rates_changed = true;
break;
}
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;
}
}
// Update primary variables, if necessary.
if (bhp_changed) {
ADB::V new_bhp = Eigen::Map<ADB::V>(xw.bhp().data(), nw);
// Avoiding the copy below would require a value setter method
// in AutoDiffBlock.
std::vector<ADB::M> old_derivs = bhp.derivative();
bhp = ADB::function(std::move(new_bhp), std::move(old_derivs));
}
if (rates_changed) {
// 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>(xw.wellRates().data(), nw, np).transpose();
ADB::V new_qs = Eigen::Map<const V>(wrates.data(), nw*np);
std::vector<ADB::M> old_derivs = well_phase_flow_rate.derivative();
well_phase_flow_rate = ADB::function(std::move(new_qs), std::move(old_derivs));
}
}
template<class T>
void FullyImplicitBlackoilPolymerSolver<T>::addWellControlEq(const SolutionState& state,
const WellStateFullyImplicitBlackoil& xw,