1 // SPDX-FileCopyrightText: Copyright (c) 2017-2024, HONEE contributors. 2 // SPDX-License-Identifier: Apache-2.0 OR BSD-2-Clause 3 4 /// @file 5 /// Setup DM for Navier-Stokes example using PETSc 6 7 #include <ceed.h> 8 #include <petscdmplex.h> 9 #include <petscds.h> 10 11 #include <navierstokes.h> 12 #include "../problems/stg_shur14.h" 13 14 // Create mesh 15 PetscErrorCode CreateDM(MPI_Comm comm, ProblemData problem, MatType mat_type, VecType vec_type, DM *dm) { 16 PetscBool isCGNS; 17 char filename[PETSC_MAX_PATH_LEN] = ""; 18 19 PetscFunctionBeginUser; 20 PetscCall(PetscOptionsGetString(NULL, NULL, "-dm_plex_filename", filename, sizeof(filename), NULL)); 21 PetscCall(HoneeCheckFilenameExtension(comm, filename, ".cgns", &isCGNS)); 22 23 if (isCGNS) { 24 // Must create from file to keep the sfNatural field in tact 25 PetscCall(DMPlexCreateFromFile(comm, filename, "HONEE", PETSC_TRUE, dm)); 26 PetscCall(PetscOptionsSetValue(NULL, "-dm_plex_filename", "")); 27 } else { 28 PetscCall(DMCreate(comm, dm)); 29 PetscCall(DMSetType(*dm, DMPLEX)); 30 } 31 32 { 33 PetscBool skip = PETSC_TRUE; 34 PetscCall(PetscOptionsGetBool(NULL, NULL, "-dm_mat_preallocate_skip", &skip, NULL)); 35 PetscCall(DMSetMatrixPreallocateSkip(*dm, skip)); 36 } 37 PetscCall(DMSetMatType(*dm, mat_type)); 38 PetscCall(DMSetVecType(*dm, vec_type)); 39 PetscCall(HoneeOptionsSetValueDefault(NULL, "-dm_plex_simplex", "0")); 40 PetscCall(HoneeOptionsSetValueDefault(NULL, "-dm_localize", "0")); // Delay localization until DMSetupByOrderEnd_FEM 41 PetscCall(DMSetSparseLocalize(*dm, PETSC_FALSE)); 42 PetscCall(DMSetBlockingType(*dm, DM_BLOCKING_FIELD_NODE)); 43 44 // Set CL options 45 PetscCall(DMSetFromOptions(*dm)); 46 PetscCall(DMViewFromOptions(*dm, NULL, "-dm_view")); 47 { // Force isoperiodic point SF to be created to update sfNatural. 48 // Needs to be done before removing the field corresponding to sfNatural, but after IsoperiodicFaces have been set 49 PetscInt num_fields; 50 PetscCall(DMGetNumFields(*dm, &num_fields)); 51 if (num_fields) { 52 PetscSection dummy; 53 PetscCall(DMGetGlobalSection(*dm, &dummy)); 54 } 55 } 56 PetscFunctionReturn(PETSC_SUCCESS); 57 } 58 59 // Setup DM 60 PetscErrorCode SetUpDM(DM dm, ProblemData problem, PetscInt degree, PetscInt q_extra, SimpleBC bc, Physics phys) { 61 PetscInt num_comp_q = 5; 62 63 PetscFunctionBeginUser; 64 PetscCall(DMClearFields(dm)); 65 PetscCall(DMSetLocalSection(dm, NULL)); 66 PetscCall(DMSetupByOrderBegin_FEM(PETSC_TRUE, PETSC_TRUE, degree, PETSC_DECIDE, q_extra, 1, &num_comp_q, dm)); 67 68 { // Add strong boundary conditions to DM 69 DMLabel label; 70 PetscCall(DMGetLabel(dm, "Face Sets", &label)); 71 PetscCheck(label, PetscObjectComm((PetscObject)dm), PETSC_ERR_SUP, "DM does not have 'Face Sets' label"); 72 PetscCall(DMPlexLabelComplete(dm, label)); 73 74 for (PetscInt i = 0; i < problem->num_bc_defs; i++) { 75 BCDefinition bc_def = problem->bc_defs[i]; 76 PetscInt num_essential_comps, num_label_values; 77 const PetscInt *essential_comps, *label_values; 78 const char *name; 79 80 PetscCall(BCDefinitionGetEssential(bc_def, &num_essential_comps, &essential_comps)); 81 if (essential_comps > 0) { 82 PetscCall(BCDefinitionGetInfo(bc_def, &name, &num_label_values, &label_values)); 83 PetscCall(DMAddBoundary(dm, DM_BC_ESSENTIAL, name, label, num_label_values, label_values, 0, num_essential_comps, essential_comps, NULL, NULL, 84 NULL, NULL)); 85 } 86 } 87 { 88 PetscBool use_strongstg = PETSC_FALSE; 89 PetscCall(PetscOptionsGetBool(NULL, NULL, "-stg_strong", &use_strongstg, NULL)); 90 if (use_strongstg) PetscCall(SetupStrongStg(dm, bc, problem, phys)); 91 } 92 } 93 94 PetscCall(DMSetupByOrderEnd_FEM(PETSC_TRUE, dm)); 95 96 // Empty name for conserved field (because there is only one field) 97 PetscSection section; 98 PetscCall(DMGetLocalSection(dm, §ion)); 99 PetscCall(PetscSectionSetFieldName(section, 0, "")); 100 switch (phys->state_var) { 101 case STATEVAR_CONSERVATIVE: 102 PetscCall(PetscSectionSetComponentName(section, 0, 0, "Density")); 103 PetscCall(PetscSectionSetComponentName(section, 0, 1, "MomentumX")); 104 PetscCall(PetscSectionSetComponentName(section, 0, 2, "MomentumY")); 105 PetscCall(PetscSectionSetComponentName(section, 0, 3, "MomentumZ")); 106 PetscCall(PetscSectionSetComponentName(section, 0, 4, "TotalEnergy")); 107 break; 108 109 case STATEVAR_PRIMITIVE: 110 PetscCall(PetscSectionSetComponentName(section, 0, 0, "Pressure")); 111 PetscCall(PetscSectionSetComponentName(section, 0, 1, "VelocityX")); 112 PetscCall(PetscSectionSetComponentName(section, 0, 2, "VelocityY")); 113 PetscCall(PetscSectionSetComponentName(section, 0, 3, "VelocityZ")); 114 PetscCall(PetscSectionSetComponentName(section, 0, 4, "Temperature")); 115 break; 116 117 case STATEVAR_ENTROPY: 118 PetscCall(PetscSectionSetComponentName(section, 0, 0, "EntropyDensity")); 119 PetscCall(PetscSectionSetComponentName(section, 0, 1, "EntropyMomentumX")); 120 PetscCall(PetscSectionSetComponentName(section, 0, 2, "EntropyMomentumY")); 121 PetscCall(PetscSectionSetComponentName(section, 0, 3, "EntropyMomentumZ")); 122 PetscCall(PetscSectionSetComponentName(section, 0, 4, "EntropyTotalEnergy")); 123 break; 124 } 125 PetscFunctionReturn(PETSC_SUCCESS); 126 } 127 128 // Refine DM for high-order viz 129 PetscErrorCode VizRefineDM(DM dm, Honee honee, ProblemData problem, SimpleBC bc, Physics phys) { 130 DM dm_hierarchy[honee->app_ctx->viz_refine + 1]; 131 VecType vec_type; 132 133 PetscFunctionBeginUser; 134 PetscCall(DMPlexSetRefinementUniform(dm, PETSC_TRUE)); 135 136 dm_hierarchy[0] = dm; 137 for (PetscInt i = 0, d = honee->app_ctx->degree; i < honee->app_ctx->viz_refine; i++) { 138 Mat interp_next; 139 PetscCall(DMRefine(dm_hierarchy[i], MPI_COMM_NULL, &dm_hierarchy[i + 1])); 140 PetscCall(DMClearDS(dm_hierarchy[i + 1])); 141 PetscCall(DMClearFields(dm_hierarchy[i + 1])); 142 PetscCall(DMSetCoarseDM(dm_hierarchy[i + 1], dm_hierarchy[i])); 143 d = (d + 1) / 2; 144 PetscInt q_order = d + honee->app_ctx->q_extra; 145 if (i + 1 == honee->app_ctx->viz_refine) d = 1; 146 PetscCall(DMGetVecType(dm, &vec_type)); 147 PetscCall(DMSetVecType(dm_hierarchy[i + 1], vec_type)); 148 PetscCall(SetUpDM(dm_hierarchy[i + 1], problem, d, q_order, bc, phys)); 149 PetscCall(DMCreateInterpolation(dm_hierarchy[i], dm_hierarchy[i + 1], &interp_next, NULL)); 150 if (!i) honee->interp_viz = interp_next; 151 else { 152 Mat C; 153 PetscCall(MatMatMult(interp_next, honee->interp_viz, MAT_INITIAL_MATRIX, PETSC_DECIDE, &C)); 154 PetscCall(MatDestroy(&interp_next)); 155 PetscCall(MatDestroy(&honee->interp_viz)); 156 honee->interp_viz = C; 157 } 158 } 159 for (PetscInt i = 1; i < honee->app_ctx->viz_refine; i++) { 160 PetscCall(DMDestroy(&dm_hierarchy[i])); 161 } 162 honee->dm_viz = dm_hierarchy[honee->app_ctx->viz_refine]; 163 PetscFunctionReturn(PETSC_SUCCESS); 164 } 165