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 PetscFunctionBeginUser; 17 // Create DMPLEX 18 PetscCall(DMCreate(comm, dm)); 19 PetscCall(DMSetType(*dm, DMPLEX)); 20 { 21 PetscBool skip = PETSC_TRUE; 22 PetscCall(PetscOptionsGetBool(NULL, NULL, "-dm_mat_preallocate_skip", &skip, NULL)); 23 PetscCall(DMSetMatrixPreallocateSkip(*dm, skip)); 24 } 25 PetscCall(DMSetMatType(*dm, mat_type)); 26 PetscCall(DMSetVecType(*dm, vec_type)); 27 28 // Set Tensor elements 29 PetscCall(HoneeOptionsSetValueDefault(NULL, "-dm_plex_simplex", "0")); 30 PetscCall(HoneeOptionsSetValueDefault(NULL, "-dm_localize", "0")); // Delay localization until DMSetupByOrderEnd_FEM 31 PetscCall(DMSetSparseLocalize(*dm, PETSC_FALSE)); 32 PetscCall(DMSetBlockingType(*dm, DM_BLOCKING_FIELD_NODE)); 33 34 // Set CL options 35 PetscCall(DMSetFromOptions(*dm)); 36 PetscCall(DMViewFromOptions(*dm, NULL, "-dm_view")); 37 PetscFunctionReturn(PETSC_SUCCESS); 38 } 39 40 // Setup DM 41 PetscErrorCode SetUpDM(DM dm, ProblemData problem, PetscInt degree, PetscInt q_extra, SimpleBC bc, Physics phys) { 42 PetscInt num_comp_q = 5; 43 PetscFunctionBeginUser; 44 45 PetscCall(DMSetupByOrderBegin_FEM(PETSC_TRUE, PETSC_TRUE, degree, PETSC_DECIDE, q_extra, 1, &num_comp_q, dm)); 46 47 { // Add strong boundary conditions to DM 48 DMLabel label; 49 PetscCall(DMGetLabel(dm, "Face Sets", &label)); 50 PetscCheck(label, PetscObjectComm((PetscObject)dm), PETSC_ERR_SUP, "DM does not have 'Face Sets' label"); 51 PetscCall(DMPlexLabelComplete(dm, label)); 52 53 for (PetscInt i = 0; i < problem->num_bc_defs; i++) { 54 BCDefinition bc_def = problem->bc_defs[i]; 55 PetscInt num_essential_comps, num_label_values; 56 const PetscInt *essential_comps, *label_values; 57 const char *name; 58 59 PetscCall(BCDefinitionGetEssential(bc_def, &num_essential_comps, &essential_comps)); 60 if (essential_comps > 0) { 61 PetscCall(BCDefinitionGetInfo(bc_def, &name, &num_label_values, &label_values)); 62 PetscCall(DMAddBoundary(dm, DM_BC_ESSENTIAL, name, label, num_label_values, label_values, 0, num_essential_comps, essential_comps, NULL, NULL, 63 NULL, NULL)); 64 } 65 } 66 { 67 PetscBool use_strongstg = PETSC_FALSE; 68 PetscCall(PetscOptionsGetBool(NULL, NULL, "-stg_strong", &use_strongstg, NULL)); 69 if (use_strongstg) PetscCall(SetupStrongStg(dm, bc, problem, phys)); 70 } 71 } 72 73 PetscCall(DMSetupByOrderEnd_FEM(PETSC_TRUE, dm)); 74 75 // Empty name for conserved field (because there is only one field) 76 PetscSection section; 77 PetscCall(DMGetLocalSection(dm, §ion)); 78 PetscCall(PetscSectionSetFieldName(section, 0, "")); 79 switch (phys->state_var) { 80 case STATEVAR_CONSERVATIVE: 81 PetscCall(PetscSectionSetComponentName(section, 0, 0, "Density")); 82 PetscCall(PetscSectionSetComponentName(section, 0, 1, "MomentumX")); 83 PetscCall(PetscSectionSetComponentName(section, 0, 2, "MomentumY")); 84 PetscCall(PetscSectionSetComponentName(section, 0, 3, "MomentumZ")); 85 PetscCall(PetscSectionSetComponentName(section, 0, 4, "TotalEnergy")); 86 break; 87 88 case STATEVAR_PRIMITIVE: 89 PetscCall(PetscSectionSetComponentName(section, 0, 0, "Pressure")); 90 PetscCall(PetscSectionSetComponentName(section, 0, 1, "VelocityX")); 91 PetscCall(PetscSectionSetComponentName(section, 0, 2, "VelocityY")); 92 PetscCall(PetscSectionSetComponentName(section, 0, 3, "VelocityZ")); 93 PetscCall(PetscSectionSetComponentName(section, 0, 4, "Temperature")); 94 break; 95 96 case STATEVAR_ENTROPY: 97 PetscCall(PetscSectionSetComponentName(section, 0, 0, "EntropyDensity")); 98 PetscCall(PetscSectionSetComponentName(section, 0, 1, "EntropyMomentumX")); 99 PetscCall(PetscSectionSetComponentName(section, 0, 2, "EntropyMomentumY")); 100 PetscCall(PetscSectionSetComponentName(section, 0, 3, "EntropyMomentumZ")); 101 PetscCall(PetscSectionSetComponentName(section, 0, 4, "EntropyTotalEnergy")); 102 break; 103 } 104 PetscFunctionReturn(PETSC_SUCCESS); 105 } 106 107 // Refine DM for high-order viz 108 PetscErrorCode VizRefineDM(DM dm, User user, ProblemData problem, SimpleBC bc, Physics phys) { 109 DM dm_hierarchy[user->app_ctx->viz_refine + 1]; 110 VecType vec_type; 111 112 PetscFunctionBeginUser; 113 PetscCall(DMPlexSetRefinementUniform(dm, PETSC_TRUE)); 114 115 dm_hierarchy[0] = dm; 116 for (PetscInt i = 0, d = user->app_ctx->degree; i < user->app_ctx->viz_refine; i++) { 117 Mat interp_next; 118 PetscCall(DMRefine(dm_hierarchy[i], MPI_COMM_NULL, &dm_hierarchy[i + 1])); 119 PetscCall(DMClearDS(dm_hierarchy[i + 1])); 120 PetscCall(DMClearFields(dm_hierarchy[i + 1])); 121 PetscCall(DMSetCoarseDM(dm_hierarchy[i + 1], dm_hierarchy[i])); 122 d = (d + 1) / 2; 123 PetscInt q_order = d + user->app_ctx->q_extra; 124 if (i + 1 == user->app_ctx->viz_refine) d = 1; 125 PetscCall(DMGetVecType(dm, &vec_type)); 126 PetscCall(DMSetVecType(dm_hierarchy[i + 1], vec_type)); 127 PetscCall(SetUpDM(dm_hierarchy[i + 1], problem, d, q_order, bc, phys)); 128 PetscCall(DMCreateInterpolation(dm_hierarchy[i], dm_hierarchy[i + 1], &interp_next, NULL)); 129 if (!i) user->interp_viz = interp_next; 130 else { 131 Mat C; 132 PetscCall(MatMatMult(interp_next, user->interp_viz, MAT_INITIAL_MATRIX, PETSC_DECIDE, &C)); 133 PetscCall(MatDestroy(&interp_next)); 134 PetscCall(MatDestroy(&user->interp_viz)); 135 user->interp_viz = C; 136 } 137 } 138 for (PetscInt i = 1; i < user->app_ctx->viz_refine; i++) { 139 PetscCall(DMDestroy(&dm_hierarchy[i])); 140 } 141 user->dm_viz = dm_hierarchy[user->app_ctx->viz_refine]; 142 PetscFunctionReturn(PETSC_SUCCESS); 143 } 144