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Merge pull request #4682 from GitPaean/fixing_all_motiblity_zero

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Fixing the perfRates initialization with all zero motiblity
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Bård Skaflestad 2023-06-08 13:27:21 +02:00 committed by GitHub
commit 7fe97c19ce
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1 changed files with 21 additions and 5 deletions
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26
opm/simulators/wells/StandardWellConnections.cpp
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@ -35,6 +35,8 @@
#include <opm/simulators/wells/WellInterfaceIndices.hpp>
#include <opm/simulators/wells/WellState.hpp>
#include <cassert>
#include <limits>
#include <numeric>
#include <sstream>
@ -475,21 +477,35 @@ computeProperties(const WellState& well_state,
const int cell_idx = well_.cells()[perf];
const double well_tw_fraction = well_.wellIndex()[perf] / total_tw;
double total_mobility = 0.0;
double total_invB = 0.;
for (int p = 0; p < np; ++p) {
int ebosPhaseIdx = well_.flowPhaseToEbosPhaseIdx(p);
total_mobility += invB(cell_idx, ebosPhaseIdx) * mobility(cell_idx, ebosPhaseIdx);
total_invB += invB(cell_idx, ebosPhaseIdx);
}
if constexpr (Indices::enableSolvent) {
total_mobility += solventInverseFormationVolumeFactor(cell_idx) * solventMobility(cell_idx);
total_invB += solventInverseFormationVolumeFactor(cell_idx);
}
const bool non_zero_total_mobility = total_mobility > std::numeric_limits<double>::min();
assert(total_invB > std::numeric_limits<double>::min());
// for the perforation having zero mobility for all the phases, we use a small value to generate a small
// perforation rates for those perforations, at the same time, we can use the rates to recover the mixing
// ratios for those perforations.
constexpr double small_value = 1.e-10;
for (int p = 0; p < np; ++p) {
int ebosPhaseIdx = well_.flowPhaseToEbosPhaseIdx(p);
perfRates[perf * well_.numComponents() + p] = well_tw_fraction *
invB(cell_idx, ebosPhaseIdx) * mobility(cell_idx, ebosPhaseIdx) / total_mobility;
const int ebosPhaseIdx = well_.flowPhaseToEbosPhaseIdx(p);
const auto mob_ratio = non_zero_total_mobility
? mobility(cell_idx, ebosPhaseIdx) / total_mobility
: small_value / total_invB;
perfRates[perf * well_.numComponents() + p] = well_tw_fraction * invB(cell_idx, ebosPhaseIdx) * mob_ratio;
}
if constexpr (Indices::enableSolvent) {
perfRates[perf * well_.numComponents() + Indices::contiSolventEqIdx] = well_tw_fraction *
solventInverseFormationVolumeFactor(cell_idx) * solventMobility(cell_idx) / total_mobility;
const auto mob_ratio = non_zero_total_mobility
? solventMobility(cell_idx) / total_mobility
: small_value / total_invB;
perfRates[perf * well_.numComponents() + Indices::contiSolventEqIdx] =
well_tw_fraction * solventInverseFormationVolumeFactor(cell_idx) * mob_ratio;
}
}
}