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Compute temperature for xflowing injectors as weighted average #5799

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Compute temperature for xflowing injectors as weighted average #5799

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d8d074a
Compute temperature for xflowing injectors as weighted average of flu…
vkip Dec 13, 2024
e804198
Fix float version
vkip Dec 13, 2024
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32 changes: 16 additions & 16 deletions opm/simulators/wells/BlackoilWellModel_impl.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2875,15 +2875,10 @@ namespace Opm {
for (auto wellID = 0*nw; wellID < nw; ++wellID) {
const Well& well = this->wells_ecl_[wellID];
auto& ws = this->wellState().well(wellID);
if (well.isInjector()){
if( !(ws.status == WellStatus::STOP)){
this->wellState().well(wellID).temperature = well.inj_temperature();
continue;
}
}

std::array<Scalar,2> weighted{0.0,0.0};
auto& [weighted_temperature, total_weight] = weighted;
std::array<Scalar,4> weighted{0.0,0.0,0.0,0.0};
auto& [total_weight_prod, total_weight_inj, weighted_temp_prod, weighted_temp_inj] = weighted;
const Scalar injectionTemperature = well.isInjector() ? well.inj_temperature() : 0.0;

auto& well_info = this->local_parallel_well_info_[wellID].get();
auto& perf_data = ws.perf_data;
Expand All @@ -2896,9 +2891,8 @@ namespace Opm {
const auto& fs = intQuants.fluidState();

// we on only have one temperature pr cell any phaseIdx will do
Scalar cellTemperatures = fs.temperature(/*phaseIdx*/0).value();
const Scalar cellTemperature = fs.temperature(/*phaseIdx*/0).value();

Scalar weight_factor = 0.0;
for (unsigned phaseIdx = 0; phaseIdx < FluidSystem::numPhases; ++phaseIdx)
{
if (!FluidSystem::phaseIsActive(phaseIdx)) {
Expand All @@ -2908,14 +2902,20 @@ namespace Opm {
cellBinv = fs.invB(phaseIdx).value();
cellDensity = fs.density(phaseIdx).value();
perfPhaseRate = perf_phase_rate[ perf*np + phaseIdx ];
weight_factor += cellDensity * perfPhaseRate/cellBinv * cellInternalEnergy/cellTemperatures;
const Scalar vol_heatcap = cellDensity/cellBinv * cellInternalEnergy/cellTemperature;
const Scalar heatcap_rate_prod = -std::min(perfPhaseRate, Scalar(0.0))*vol_heatcap;
const Scalar heatcap_rate_inj = perfPhaseRate*vol_heatcap;
total_weight_prod += heatcap_rate_prod;
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@totto82 totto82 Dec 13, 2024 •
edited
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Why is this (line 2907) not std::max(perfPhaseRate, 0.0)? (to get the inflow?)

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Because I want to end up with the net injected rate for the well (weight for the injection temperature).

total_weight_inj += heatcap_rate_inj;
weighted_temp_prod += (heatcap_rate_prod * cellTemperature);
weighted_temp_inj += (heatcap_rate_inj * injectionTemperature);
}
weight_factor = std::abs(weight_factor)+1e-13;
total_weight += weight_factor;
weighted_temperature += weight_factor * cellTemperatures;
}
well_info.communication().sum(weighted.data(), 2);
this->wellState().well(wellID).temperature = weighted_temperature/total_weight;
well_info.communication().sum(weighted.data(), 4);
const Scalar well_temp = well.isInjector() ?
(weighted_temp_inj + weighted_temp_prod) / (total_weight_prod + total_weight_inj + 1.0e-16)
: weighted_temp_prod / (total_weight_prod + 1.0e-16);
this->wellState().well(wellID).temperature = well_temp;
}
}

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