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Fix MG species restart crash #2849

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Fix MG species restart crash #2849

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b677593
Fix species solver MG restart crash
aureliegrebe Jul 21, 2026
4150aa9
Test species MG restart
aureliegrebe Jul 21, 2026
35622e8
Add comment explaining MG species restart
aureliegrebe Jul 21, 2026
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4 changes: 2 additions & 2 deletions SU2_CFD/src/solvers/CSpeciesSolver.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -290,9 +290,9 @@ void CSpeciesSolver::LoadRestart(CGeometry** geometry, CSolver*** solver, CConfi
true);

if (config->GetKind_Turb_Model() != TURB_MODEL::NONE)
solver[iMesh][TURB_SOL]->Postprocessing(geometry[MESH_0], solver[MESH_0], config, MESH_0);
solver[iMesh][TURB_SOL]->Postprocessing(geometry[iMesh], solver[iMesh], config, iMesh);

solver[iMesh][SPECIES_SOL]->Preprocessing(geometry[MESH_0], solver[MESH_0], config, MESH_0, NO_RK_ITER,
solver[iMesh][SPECIES_SOL]->Preprocessing(geometry[iMesh], solver[iMesh], config, iMesh, NO_RK_ITER,
RUNTIME_SPECIES_SYS, false);
}

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1 change: 1 addition & 0 deletions SU2_CFD/src/solvers/CTurbSolver.cpp
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Expand Up @@ -184,6 +184,7 @@ void CTurbSolver::LoadRestart(CGeometry** geometry, CSolver*** solver, CConfig*
solver[iMesh][TURB_SOL]->CompleteComms(geometry[iMesh], config, MPI_QUANTITIES::SOLUTION);

if (config->GetKind_Species_Model() == SPECIES_MODEL::NONE) {
/*--- The following is done by the species solver if active ---*/
solver[iMesh][FLOW_SOL]->Preprocessing(geometry[iMesh], solver[iMesh], config, iMesh, NO_RK_ITER, RUNTIME_FLOW_SYS,
true);
solver[iMesh][TURB_SOL]->Postprocessing(geometry[iMesh], solver[iMesh], config, iMesh);
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8 changes: 6 additions & 2 deletions TestCases/axisymmetric_rans/air_nozzle/air_nozzle_species.cfg
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Expand Up @@ -12,7 +12,7 @@
%
SOLVER= RANS
KIND_TURB_MODEL= SST
RESTART_SOL= NO
RESTART_SOL= YES
AXISYMMETRIC= YES

% -------------------- COMPRESSIBLE FREE-STREAM DEFINITION --------------------%
Expand Down Expand Up @@ -92,6 +92,9 @@ CONV_NUM_METHOD_TURB= SCALAR_UPWIND
TIME_DISCRE_TURB= EULER_IMPLICIT
CFL_REDUCTION_TURB= 1.0

% -------------------------- MULTIGRID PARAMETERS -----------------------------%
MGLEVEL= 1

% --------------------------- CONVERGENCE PARAMETERS --------------------------%
%
ITER= 15
Expand All @@ -101,7 +104,8 @@ CONV_STARTITER= 10
% ------------------------- INPUT/OUTPUT INFORMATION --------------------------%
%
MESH_FILENAME= nozzle.su2
RESTART_FILENAME= restart_flow
RESTART_FILENAME= restart_flow_species
SOLUTION_FILENAME= solution_flow_species
OUTPUT_WRT_FREQ= 1000
SCREEN_OUTPUT= (INNER_ITER, RMS_DENSITY, RMS_ENERGY, RMS_TKE, RMS_DISSIPATION, RMS_SPECIES_0, TOTAL_HEATFLUX, \
RMS_ADJ_DENSITY, RMS_ADJ_ENERGY, RMS_ADJ_TKE, RMS_ADJ_DISSIPATION)
2 changes: 1 addition & 1 deletion TestCases/serial_regression.py
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Expand Up @@ -354,7 +354,7 @@ def main():
axi_rans_air_nozzle_species.cfg_dir = "axisymmetric_rans/air_nozzle"
axi_rans_air_nozzle_species.cfg_file = "air_nozzle_species.cfg"
axi_rans_air_nozzle_species.test_iter = 10
axi_rans_air_nozzle_species.test_vals = [-1.840714, 3.726195, -2.009323, 5.649002, -2.494388, 0.0000]
axi_rans_air_nozzle_species.test_vals = [-1.690923, 3.877716, -2.932258, 5.754594, -3.130820, 0.0]
axi_rans_air_nozzle_species.tol = 0.0001
test_list.append(axi_rans_air_nozzle_species)

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