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putting update of water injection mobility to a separate function
computeInjectionMobility() in BlackoilPolymerModel
This commit is contained in:
Kai Bao
parent
4f3ce37b8e
commit
b8e0cda83a
@ -227,6 +227,10 @@ namespace Opm {
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computeAccum(const SolutionState& state,
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computeAccum(const SolutionState& state,
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const int aix );
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const int aix );
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void
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computeInjectionMobility(const SolutionState& state,
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std::vector<ADB>& mob_perfcells);
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void
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void
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assembleMassBalanceEq(const SolutionState& state);
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assembleMassBalanceEq(const SolutionState& state);
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@ -540,58 +540,9 @@ namespace Opm {
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std::vector<ADB> b_perfcells;
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std::vector<ADB> b_perfcells;
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wellModel().extractWellPerfProperties(state, sd_.rq, mob_perfcells, b_perfcells);
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wellModel().extractWellPerfProperties(state, sd_.rq, mob_perfcells, b_perfcells);
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// Calculating the mobility for the polymer injection peforations
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// updating the the injection mobility related to polymer injection when necessary
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if (has_polymer_ && wellModel().localWellsActive()) {
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// only the mobility of water phase is updated
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const std::vector<int> well_cells = wellModel().wellOps().well_cells;
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computeInjectionMobility(state, mob_perfcells);
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const int nperf = well_cells.size();
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// Calculating the drawdown to decide the injection perforation
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const ADB& p_perfcells = subset(state.pressure, well_cells);
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const V& cdp = wellModel().wellPerforationPressureDiffs();
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const ADB perfpressure = (wellModel().wellOps().w2p * state.bhp) + cdp;
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// Pressure drawdown (also used to determine direction of flow)
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const ADB drawdown = p_perfcells - perfpressure;
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// Polymer concentration in the perforations
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const ADB c_perfcells = subset(state.concentration, well_cells);
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// Distinguishing the injection perforation from other perforation
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// The value is the location in the well_cell array, not the global index
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std::vector<int> polymer_inj_cells;
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std::vector<int> other_well_cells;
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polymer_inj_cells.reserve(nperf);
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other_well_cells.reserve(nperf);
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for (int c = 0; c < nperf; ++c) {
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// TODO: more tests need to be done for this criterion
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if (drawdown.value()[c] < 0.0 && c_perfcells.value()[c] > 0.0) {
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polymer_inj_cells.push_back(c);
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} else {
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other_well_cells.push_back(c);
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}
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}
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// there is some polymer injection process going
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if ( !polymer_inj_cells.empty() ) {
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// the mobility need to be recalculated for the polymer injection cells
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const int water_pos = fluid_.phaseUsage().phase_pos[Water];
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const ADB mu_perfcells = subset(sd_.rq[water_pos].mu, well_cells);
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const ADB c_poly_inj_cells = subset(c_perfcells, polymer_inj_cells);
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const ADB mu_poly_inj_cells = subset(mu_perfcells, polymer_inj_cells); // water viscosity
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const ADB inv_wat_eff_visc = polymer_props_ad_.effectiveInvWaterVisc(c_poly_inj_cells, mu_poly_inj_cells.value());
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const ADB fully_mixing_visc = polymer_props_ad_.viscMult(c_poly_inj_cells) * mu_poly_inj_cells;
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// the original mobility for the polymer injection well cells
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ADB mob_polymer_inj = subset(mob_perfcells[water_pos], polymer_inj_cells);
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const ADB mob_others = subset(mob_perfcells[water_pos], other_well_cells);
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mob_polymer_inj = mob_polymer_inj / inv_wat_eff_visc / fully_mixing_visc;
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mob_perfcells[water_pos] = superset(mob_polymer_inj, polymer_inj_cells, nperf) + superset(mob_others, other_well_cells, nperf);
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}
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}
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if (param_.solve_welleq_initially_ && initial_assembly) {
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if (param_.solve_welleq_initially_ && initial_assembly) {
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// solve the well equations as a pre-processing step
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// solve the well equations as a pre-processing step
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@ -838,6 +789,71 @@ namespace Opm {
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return;
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return;
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}
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}
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template<class Grid>
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void
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BlackoilPolymerModel<Grid>::
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computeInjectionMobility(const SolutionState& state,
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std::vector<ADB>& mob_perfcells)
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{
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// Calculating the mobility for the polymer injection peforations
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if (has_polymer_ && wellModel().localWellsActive()) {
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const std::vector<int> well_cells = wellModel().wellOps().well_cells;
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const int nperf = well_cells.size();
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// Calculating the drawdown to decide the injection perforation
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const ADB& p_perfcells = subset(state.pressure, well_cells);
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const V& cdp = wellModel().wellPerforationPressureDiffs();
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const ADB perfpressure = (wellModel().wellOps().w2p * state.bhp) + cdp;
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// Pressure drawdown (also used to determine direction of flow)
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const ADB drawdown = p_perfcells - perfpressure;
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// Polymer concentration in the perforations
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const ADB c_perfcells = subset(state.concentration, well_cells);
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// Distinguishing the injection perforation from other perforation
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// The value is the location in the well_cell array, not the global index
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std::vector<int> polymer_inj_cells;
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std::vector<int> other_well_cells;
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polymer_inj_cells.reserve(nperf);
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other_well_cells.reserve(nperf);
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for (int c = 0; c < nperf; ++c) {
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// TODO: more tests need to be done for this criterion
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if (drawdown.value()[c] < 0.0 && c_perfcells.value()[c] > 0.0) {
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polymer_inj_cells.push_back(c);
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} else {
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other_well_cells.push_back(c);
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}
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}
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// there is some polymer injection process going
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if ( !polymer_inj_cells.empty() ) {
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// the mobility need to be recalculated for the polymer injection cells
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const int water_pos = fluid_.phaseUsage().phase_pos[Water];
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const ADB mu_perfcells = subset(sd_.rq[water_pos].mu, well_cells);
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const ADB c_poly_inj_cells = subset(c_perfcells, polymer_inj_cells);
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const ADB mu_poly_inj_cells = subset(mu_perfcells, polymer_inj_cells); // water viscosity
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const ADB inv_wat_eff_visc = polymer_props_ad_.effectiveInvWaterVisc(c_poly_inj_cells, mu_poly_inj_cells.value());
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const ADB fully_mixing_visc = polymer_props_ad_.viscMult(c_poly_inj_cells) * mu_poly_inj_cells;
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// the original mobility for the polymer injection well cells
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ADB mob_polymer_inj = subset(mob_perfcells[water_pos], polymer_inj_cells);
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const ADB mob_others = subset(mob_perfcells[water_pos], other_well_cells);
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mob_polymer_inj = mob_polymer_inj / inv_wat_eff_visc / fully_mixing_visc;
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mob_perfcells[water_pos] = superset(mob_polymer_inj, polymer_inj_cells, nperf) +
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superset(mob_others, other_well_cells, nperf);
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}
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}
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}
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} // namespace Opm
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} // namespace Opm
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#endif // OPM_BLACKOILPOLYMERMODEL_IMPL_HEADER_INCLUDED
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#endif // OPM_BLACKOILPOLYMERMODEL_IMPL_HEADER_INCLUDED
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