temperature output as weighted sum of well block temperatures based on specific heat capacity of the phases

opm/simulators/wells/BlackoilWellModel_impl.hpp

@@ -703,6 +703,12 @@ namespace Opm {
                         const SummaryState& summaryState)
     {
         std::vector<double> cellPressures(this->local_num_cells_, 0.0);
+        std::vector<double> cellTemperatures(this->local_num_cells_, 0.0);
+        const int np = numPhases();
+        std::vector<std::vector<double>> cellInternalEnergy(this->local_num_cells_, std::vector<double>(np));
+        std::vector<std::vector<double>> cellBinv(this->local_num_cells_, std::vector<double>(np));
+        std::vector<std::vector<double>> cellDensity(this->local_num_cells_, std::vector<double>(np));
+        
         ElementContext elemCtx(ebosSimulator_);
 
         const auto& gridView = ebosSimulator_.vanguard().gridView();
@@ -719,6 +725,15 @@ namespace Opm {
             elemCtx.updatePrimaryIntensiveQuantities(/*timeIdx=*/0);
 
             const auto& fs = elemCtx.intensiveQuantities(/*spaceIdx=*/0, /*timeIdx=*/0).fluidState();
+            
+            cellTemperatures[elemCtx.globalSpaceIndex(/*spaceIdx=*/0, /*timeIdx=*/0)] = fs.temperature(/*phaseIdx*/0).value();
+
+            for (int phaseIdx = 0; phaseIdx  < np; ++phaseIdx)
+            {
+                cellInternalEnergy[elemCtx.globalSpaceIndex(/*spaceIdx=*/0, /*timeIdx=*/0)][phaseIdx] = fs.enthalpy(phaseIdx).value() - fs.pressure(phaseIdx).value() / fs.density(phaseIdx).value();
+                cellBinv[elemCtx.globalSpaceIndex(/*spaceIdx=*/0, /*timeIdx=*/0)][phaseIdx] = fs.invB(phaseIdx).value();
+                cellDensity[elemCtx.globalSpaceIndex(/*spaceIdx=*/0, /*timeIdx=*/0)][phaseIdx] = fs.density(phaseIdx).value();
+            }
 
             // copy of get perfpressure in Standard well except for value
             double& perf_pressure = cellPressures[elemCtx.globalSpaceIndex(/*spaceIdx=*/0, /*timeIdx=*/0)];
@@ -731,7 +746,7 @@ namespace Opm {
             }
         }
 
-        well_state_.init(cellPressures, schedule(), wells_ecl_, local_parallel_well_info_, timeStepIdx,
+        well_state_.init(cellPressures, cellTemperatures, cellInternalEnergy, cellBinv, cellDensity, schedule(), wells_ecl_, local_parallel_well_info_, timeStepIdx,
                          &previous_well_state_, phase_usage_, well_perf_data_,
                          summaryState, globalNumWells);
     }

opm/simulators/wells/WellState.hpp

@@ -39,18 +39,23 @@
 namespace Opm
 {
     /// The state of a set of wells.
-    class WellState
+    class WellState 
     {
     public:
         typedef std::array< int, 3 >  mapentry_t;
         typedef std::map< std::string, mapentry_t > WellMapType;
-
+        
         /// Allocate and initialize if wells is non-null.
         /// Also tries to give useful initial values to the bhp() and
         /// wellRates() fields, depending on controls.  The
         /// perfRates() field is filled with zero, and perfPress()
         /// with -1e100.
         void init(const std::vector<double>& cellPressures,
+                  const std::vector<double>& cellTemperatures,
+                  const std::vector<std::vector<double>>& cellInternalEnergy,
+                  const std::vector<std::vector<double>>& cellBinv,
+                  const std::vector<std::vector<double>>& cellDensity,
+                  const std::vector<double>& perforationRates,
                   const std::vector<Well>& wells_ecl,
                   const std::vector<ParallelWellInfo*>& parallel_well_info,
                   const PhaseUsage& pu,
@@ -73,13 +78,13 @@ namespace Opm
                 bhp_.resize(nw, 0.0);
                 thp_.resize(nw, 0.0);
                 temperature_.resize(nw, 273.15 + 15.56); // standard condition temperature
-                wellrates_.resize(nw * np, 0.0);
+                wellrates_.resize(nw * np, 0.0);              
                 int connpos = 0;
                 for (int w = 0; w < nw; ++w) {
                     const Well& well = wells_ecl[w];
               
                     // Initialize bhp(), thp(), wellRates(), temperature().
-                    initSingleWell(cellPressures, w, well, *parallel_well_info[w], pu, summary_state);
+                    initSingleWell(cellPressures, cellTemperatures, cellInternalEnergy, cellBinv, cellDensity, perforationRates, w, well, *parallel_well_info[w], pu, summary_state);
 
                     // Setup wellname -> well index mapping.
                     const int num_perf_this_well = well_perf_data[w].size();
@@ -353,6 +358,11 @@ namespace Opm
                          sizes.data(), displ.data(), 0);
         }
         void initSingleWell(const std::vector<double>& cellPressures,
+                            const std::vector<double>& cellTemperatures,
+                            const std::vector<std::vector<double>>& cellInternalEnergy,
+                            const std::vector<std::vector<double>>& cellBinv,
+                            const std::vector<std::vector<double>>& cellDensity,
+                            const std::vector<double>& perforationRates,
                             const int w,
                             const Well& well,
                             const ParallelWellInfo& well_info,
@@ -368,9 +378,35 @@ namespace Opm
                 wellrates_[np*w + p] = 0.0;
             }
 
+            const int num_perf_this_well = well_perf_data_[w].size();
             if ( well.isInjector() ) { 
                 temperature_[w] = well.injectionControls(summary_state).temperature;
             }
+            if ( well.isProducer() ) { 
+                int sz = perforationRates.size();
+                int connpos = 0;
+                for (int i = 0; i < w; ++i){
+                    connpos += well_perf_data_[i].size();
+                }
+                connpos *= np;
+                double weighted_temperature = 0.0;              
+                double total_weight = 0.0;  
+                if (sz > 0){
+                   for (int i = 0; i < num_perf_this_well; ++i){
+                        int perf_cell_index = well_perf_data_[w][i].cell_index;
+                        double weight_factor = 0.0;
+                        for (int p = 0; p < np; ++p) {     
+                            weight_factor += cellDensity[perf_cell_index][p]  * perforationRates[connpos + i*np + p]/cellBinv[perf_cell_index][p] * cellInternalEnergy[perf_cell_index][p]/cellTemperatures[perf_cell_index];
+                        }
+                        total_weight += weight_factor;
+                        weighted_temperature += weight_factor * cellTemperatures[perf_cell_index];
+                    }
+                    temperature_[w] = weighted_temperature/total_weight;
+                }
+                else {
+                    temperature_[w]=0;
+                }
+            }
 
             const int num_perf_this_well = well_info.communication().sum(well_perf_data_[w].size());
             if ( num_perf_this_well == 0 ) {
@@ -489,9 +525,9 @@ namespace Opm
 
     protected:
         std::vector<std::vector<PerforationData>> well_perf_data_;
-        std::vector<ParallelWellInfo*> parallel_well_info_;
+        std::vector<ParallelWellInfo*> parallel_well_info_;      
     };
-
+    
 } // namespace Opm
 
 #endif // OPM_WELLSTATE_HEADER_INCLUDED

opm/simulators/wells/WellStateFullyImplicitBlackoil.hpp

@@ -23,6 +23,7 @@
 
 #include <opm/simulators/wells/WellState.hpp>
 #include <opm/core/props/BlackoilPhases.hpp>
+#include <opm/material/fluidsystems/BlackOilFluidSystem.hpp>
 
 #include <opm/parser/eclipse/EclipseState/Schedule/Schedule.hpp>
 #include <opm/parser/eclipse/EclipseState/Schedule/Well/Well.hpp>
@@ -70,6 +71,10 @@ namespace Opm
         /// to give useful initial values to the bhp(), wellRates()
         /// and perfPhaseRates() fields, depending on controls
         void init(const std::vector<double>& cellPressures,
+                  const std::vector<double>& cellTemperatures,
+                  const std::vector<std::vector<double>>& cellInternalEnergy,
+                  const std::vector<std::vector<double>>& cellBinv,
+                  const std::vector<std::vector<double>>& cellDensity,
                   const Schedule& schedule,
                   const std::vector<Well>& wells_ecl,
                   const std::vector<ParallelWellInfo*>& parallel_well_info,
@@ -80,8 +85,11 @@ namespace Opm
                   const SummaryState& summary_state,
                   const int globalNumberOfWells)
         {
+            //Todo: make it reservoir perforation rates
+            std::vector<double> perforationRates;
+            perforationRates = prevState->perfphaserates_;
             // call init on base class
-            BaseType :: init(cellPressures, wells_ecl, parallel_well_info, pu, well_perf_data, summary_state);
+            BaseType :: init(cellPressures, cellTemperatures, cellInternalEnergy, cellBinv, cellDensity, perforationRates, wells_ecl, parallel_well_info, pu, well_perf_data, summary_state);
 
             for (const auto& winfo: parallel_well_info)
             {
@@ -348,7 +356,8 @@ namespace Opm
                     const int globalNumWells)
         {
             const std::vector<double> tmp(numCells, 0.0); // <- UGLY HACK to pass the size
-            init(tmp, schedule, wells_ecl, parallel_well_info, 0, nullptr, pu, well_perf_data, summary_state, globalNumWells);
+            std::vector<std::vector<double>> tmp1(numCells, std::vector<double>( numPhases()));// <- UGLY HACK to pass the size
+            init(tmp, tmp, tmp1, tmp1, tmp1, schedule, wells_ecl, parallel_well_info, 0, nullptr, pu, well_perf_data, summary_state, globalNumWells);
 
             if (handle_ms_well) {
                 initWellStateMSWell(wells_ecl, pu, nullptr);