1 // Copyright (c) 2017-2023, Lawrence Livermore National Security, LLC and other CEED contributors. 2 // All Rights Reserved. See the top-level LICENSE and NOTICE files for details. 3 // 4 // SPDX-License-Identifier: BSD-2-Clause 5 // 6 // This file is part of CEED: http://github.com/ceed 7 /// @file 8 /// Functions for setting up and performing differential filtering 9 10 #include "../qfunctions/differential_filter.h" 11 12 #include <petscdmplex.h> 13 14 #include "../navierstokes.h" 15 16 // @brief Create RHS and LHS operators for differential filtering 17 PetscErrorCode DifferentialFilterCreateOperators(Ceed ceed, User user, CeedData ceed_data, CeedQFunctionContext diff_filter_qfctx) { 18 DiffFilterData diff_filter = user->diff_filter; 19 DM dm_filter = diff_filter->dm_filter; 20 CeedInt num_comp_filter = diff_filter->num_comp_filter; 21 CeedInt num_comp_q, num_comp_qd, dim, num_qpts_1d, num_nodes_1d, num_comp_x; 22 CeedElemRestriction elem_restr_filter; 23 CeedBasis basis_filter; 24 25 PetscFunctionBeginUser; 26 PetscCall(DMGetDimension(user->dm, &dim)); 27 CeedElemRestrictionGetNumComponents(ceed_data->elem_restr_x, &num_comp_x); 28 CeedElemRestrictionGetNumComponents(ceed_data->elem_restr_q, &num_comp_q); 29 CeedElemRestrictionGetNumComponents(ceed_data->elem_restr_qd_i, &num_comp_qd); 30 CeedBasisGetNumQuadraturePoints1D(ceed_data->basis_q, &num_qpts_1d); 31 CeedBasisGetNumNodes1D(ceed_data->basis_q, &num_nodes_1d); 32 33 PetscCall(GetRestrictionForDomain(ceed, dm_filter, 0, 0, 0, num_qpts_1d, 0, &elem_restr_filter, NULL, NULL)); 34 CeedBasisCreateTensorH1Lagrange(ceed, dim, num_comp_filter, num_nodes_1d, num_qpts_1d, CEED_GAUSS, &basis_filter); 35 36 { // -- Create RHS MatopApplyContext 37 CeedQFunction qf_rhs; 38 CeedOperator op_rhs; 39 switch (user->phys->state_var) { 40 case STATEVAR_PRIMITIVE: 41 CeedQFunctionCreateInterior(ceed, 1, DifferentialFilter_RHS_Prim, DifferentialFilter_RHS_Prim_loc, &qf_rhs); 42 break; 43 case STATEVAR_CONSERVATIVE: 44 CeedQFunctionCreateInterior(ceed, 1, DifferentialFilter_RHS_Conserv, DifferentialFilter_RHS_Conserv_loc, &qf_rhs); 45 break; 46 default: 47 SETERRQ(PetscObjectComm((PetscObject)user->dm), PETSC_ERR_SUP, "Differential filtering not available for chosen state variable"); 48 } 49 if (diff_filter->do_mms_test) { 50 CeedQFunctionDestroy(&qf_rhs); 51 CeedQFunctionCreateInterior(ceed, 1, DifferentialFilter_MMS_RHS, DifferentialFilter_MMS_RHS_loc, &qf_rhs); 52 } 53 54 CeedQFunctionSetContext(qf_rhs, diff_filter_qfctx); 55 CeedQFunctionAddInput(qf_rhs, "q", num_comp_q, CEED_EVAL_INTERP); 56 CeedQFunctionAddInput(qf_rhs, "qdata", num_comp_qd, CEED_EVAL_NONE); 57 CeedQFunctionAddInput(qf_rhs, "x", num_comp_x, CEED_EVAL_INTERP); 58 CeedQFunctionAddOutput(qf_rhs, "v", num_comp_filter, CEED_EVAL_INTERP); 59 60 CeedOperatorCreate(ceed, qf_rhs, NULL, NULL, &op_rhs); 61 CeedOperatorSetField(op_rhs, "q", ceed_data->elem_restr_q, ceed_data->basis_q, CEED_VECTOR_ACTIVE); 62 CeedOperatorSetField(op_rhs, "qdata", ceed_data->elem_restr_qd_i, CEED_BASIS_COLLOCATED, ceed_data->q_data); 63 CeedOperatorSetField(op_rhs, "x", ceed_data->elem_restr_x, ceed_data->basis_x, ceed_data->x_coord); 64 CeedOperatorSetField(op_rhs, "v", elem_restr_filter, basis_filter, CEED_VECTOR_ACTIVE); 65 66 PetscCall(OperatorApplyContextCreate(user->dm, dm_filter, ceed, op_rhs, NULL, NULL, user->Q_loc, NULL, &diff_filter->op_rhs_ctx)); 67 68 CeedQFunctionDestroy(&qf_rhs); 69 CeedOperatorDestroy(&op_rhs); 70 } 71 72 { // Setup LHS Operator and KSP for the differential filtering solve 73 CeedQFunction qf_lhs; 74 CeedOperator op_lhs; 75 OperatorApplyContext mat_ctx; 76 Mat mat_lhs; 77 CeedInt num_comp_qd, dim, num_comp_grid_aniso; 78 CeedElemRestriction elem_restr_grid_aniso; 79 CeedVector grid_aniso_ceed; 80 81 PetscCall(DMGetDimension(user->dm, &dim)); 82 CeedElemRestrictionGetNumComponents(ceed_data->elem_restr_qd_i, &num_comp_qd); 83 84 switch (num_comp_filter) { 85 case 1: 86 CeedQFunctionCreateInterior(ceed, 1, DifferentialFilter_LHS_1, DifferentialFilter_LHS_1_loc, &qf_lhs); 87 break; 88 case 5: 89 CeedQFunctionCreateInterior(ceed, 1, DifferentialFilter_LHS_5, DifferentialFilter_LHS_5_loc, &qf_lhs); 90 break; 91 case 11: 92 CeedQFunctionCreateInterior(ceed, 1, DifferentialFilter_LHS_11, DifferentialFilter_LHS_11_loc, &qf_lhs); 93 break; 94 default: 95 SETERRQ(PetscObjectComm((PetscObject)user->dm), PETSC_ERR_SUP, "Differential filtering not available for (%d) components", num_comp_filter); 96 } 97 98 // -- Get Grid anisotropy tensor 99 PetscCall(GridAnisotropyTensorCalculateCollocatedVector(ceed, user, ceed_data, &elem_restr_grid_aniso, &grid_aniso_ceed, &num_comp_grid_aniso)); 100 101 CeedQFunctionSetContext(qf_lhs, diff_filter_qfctx); 102 CeedQFunctionAddInput(qf_lhs, "q", num_comp_filter, CEED_EVAL_INTERP); 103 CeedQFunctionAddInput(qf_lhs, "Grad_q", num_comp_filter * dim, CEED_EVAL_GRAD); 104 CeedQFunctionAddInput(qf_lhs, "anisotropy tensor", num_comp_grid_aniso, CEED_EVAL_NONE); 105 CeedQFunctionAddInput(qf_lhs, "x", num_comp_x, CEED_EVAL_INTERP); 106 CeedQFunctionAddInput(qf_lhs, "qdata", num_comp_qd, CEED_EVAL_NONE); 107 CeedQFunctionAddOutput(qf_lhs, "v", num_comp_filter, CEED_EVAL_INTERP); 108 CeedQFunctionAddOutput(qf_lhs, "Grad_v", num_comp_filter * dim, CEED_EVAL_GRAD); 109 110 CeedOperatorCreate(ceed, qf_lhs, NULL, NULL, &op_lhs); 111 CeedOperatorSetField(op_lhs, "q", elem_restr_filter, basis_filter, CEED_VECTOR_ACTIVE); 112 CeedOperatorSetField(op_lhs, "Grad_q", elem_restr_filter, basis_filter, CEED_VECTOR_ACTIVE); 113 CeedOperatorSetField(op_lhs, "anisotropy tensor", elem_restr_grid_aniso, CEED_BASIS_COLLOCATED, grid_aniso_ceed); 114 CeedOperatorSetField(op_lhs, "x", ceed_data->elem_restr_x, ceed_data->basis_x, ceed_data->x_coord); 115 CeedOperatorSetField(op_lhs, "qdata", ceed_data->elem_restr_qd_i, CEED_BASIS_COLLOCATED, ceed_data->q_data); 116 CeedOperatorSetField(op_lhs, "v", elem_restr_filter, basis_filter, CEED_VECTOR_ACTIVE); 117 CeedOperatorSetField(op_lhs, "Grad_v", elem_restr_filter, basis_filter, CEED_VECTOR_ACTIVE); 118 119 PetscCall(OperatorApplyContextCreate(dm_filter, dm_filter, ceed, op_lhs, NULL, NULL, NULL, NULL, &mat_ctx)); 120 PetscCall(CreateMatShell_Ceed(mat_ctx, &mat_lhs)); 121 122 PetscCall(KSPCreate(PetscObjectComm((PetscObject)dm_filter), &diff_filter->ksp)); 123 PetscCall(KSPSetOptionsPrefix(diff_filter->ksp, "diff_filter_")); 124 { 125 PC pc; 126 PetscCall(KSPGetPC(diff_filter->ksp, &pc)); 127 PetscCall(PCSetType(pc, PCJACOBI)); 128 PetscCall(PCJacobiSetType(pc, PC_JACOBI_DIAGONAL)); 129 PetscCall(KSPSetType(diff_filter->ksp, KSPCG)); 130 PetscCall(KSPSetNormType(diff_filter->ksp, KSP_NORM_NATURAL)); 131 PetscCall(KSPSetTolerances(diff_filter->ksp, 1e-10, PETSC_DEFAULT, PETSC_DEFAULT, PETSC_DEFAULT)); 132 } 133 PetscCall(KSPSetOperators(diff_filter->ksp, mat_lhs, mat_lhs)); 134 PetscCall(KSPSetFromOptions(diff_filter->ksp)); 135 136 CeedQFunctionDestroy(&qf_lhs); 137 CeedOperatorDestroy(&op_lhs); 138 } 139 140 CeedElemRestrictionDestroy(&elem_restr_filter); 141 CeedBasisDestroy(&basis_filter); 142 PetscFunctionReturn(0); 143 } 144 145 // @brief Setup DM, operators, contexts, etc. for performing differential filtering 146 PetscErrorCode DifferentialFilterSetup(Ceed ceed, User user, CeedData ceed_data, ProblemData *problem) { 147 MPI_Comm comm = user->comm; 148 NewtonianIdealGasContext gas; 149 DifferentialFilterContext diff_filter_ctx; 150 CeedQFunctionContext diff_filter_qfctx; 151 152 PetscFunctionBeginUser; 153 PetscCall(PetscNew(&user->diff_filter)); 154 PetscCall(PetscOptionsGetBool(NULL, NULL, "-diff_filter_mms", &user->diff_filter->do_mms_test, NULL)); 155 156 { // Create DM for filtered quantities 157 PetscFE fe; 158 PetscSection section; 159 PetscInt dim; 160 161 user->diff_filter->num_comp_filter = user->diff_filter->do_mms_test ? 1 : DIFF_FILTER_NUM_COMPONENTS; 162 163 PetscCall(DMClone(user->dm, &user->diff_filter->dm_filter)); 164 PetscCall(DMGetDimension(user->diff_filter->dm_filter, &dim)); 165 PetscCall(PetscObjectSetName((PetscObject)user->diff_filter->dm_filter, "Differential Filtering")); 166 167 PetscCall(PetscFECreateLagrange(PETSC_COMM_SELF, dim, user->diff_filter->num_comp_filter, PETSC_FALSE, user->app_ctx->degree, PETSC_DECIDE, &fe)); 168 PetscCall(PetscObjectSetName((PetscObject)fe, "Differential Filtering")); 169 PetscCall(DMAddField(user->diff_filter->dm_filter, NULL, (PetscObject)fe)); 170 PetscCall(DMCreateDS(user->diff_filter->dm_filter)); 171 PetscCall(DMPlexSetClosurePermutationTensor(user->diff_filter->dm_filter, PETSC_DETERMINE, NULL)); 172 173 PetscCall(DMGetLocalSection(user->diff_filter->dm_filter, §ion)); 174 PetscCall(PetscSectionSetFieldName(section, 0, "")); 175 if (user->diff_filter->do_mms_test) { 176 PetscCall(PetscSectionSetComponentName(section, 0, 0, "FilteredPhi")); 177 } else { 178 PetscCall(PetscSectionSetComponentName(section, 0, DIFF_FILTER_PRESSURE, "FilteredPressure")); 179 PetscCall(PetscSectionSetComponentName(section, 0, DIFF_FILTER_VELOCITY_X, "FilteredVelocityX")); 180 PetscCall(PetscSectionSetComponentName(section, 0, DIFF_FILTER_VELOCITY_Y, "FilteredVelocityY")); 181 PetscCall(PetscSectionSetComponentName(section, 0, DIFF_FILTER_VELOCITY_Z, "FilteredVelocityZ")); 182 PetscCall(PetscSectionSetComponentName(section, 0, DIFF_FILTER_TEMPERATURE, "FilteredTemperature")); 183 PetscCall(PetscSectionSetComponentName(section, 0, DIFF_FILTER_VELOCITY_SQUARED_XX, "FilteredVelocitySquaredXX")); 184 PetscCall(PetscSectionSetComponentName(section, 0, DIFF_FILTER_VELOCITY_SQUARED_YY, "FilteredVelocitySquaredYY")); 185 PetscCall(PetscSectionSetComponentName(section, 0, DIFF_FILTER_VELOCITY_SQUARED_ZZ, "FilteredVelocitySquaredZZ")); 186 PetscCall(PetscSectionSetComponentName(section, 0, DIFF_FILTER_VELOCITY_SQUARED_YZ, "FilteredVelocitySquaredYZ")); 187 PetscCall(PetscSectionSetComponentName(section, 0, DIFF_FILTER_VELOCITY_SQUARED_XZ, "FilteredVelocitySquaredXZ")); 188 PetscCall(PetscSectionSetComponentName(section, 0, DIFF_FILTER_VELOCITY_SQUARED_XY, "FilteredVelocitySquaredXY")); 189 } 190 191 PetscCall(PetscFEDestroy(&fe)); 192 } 193 194 PetscCall(PetscNew(&diff_filter_ctx)); 195 diff_filter_ctx->grid_based_width = false; 196 for (int i = 0; i < 3; i++) diff_filter_ctx->width_scaling[i] = 1; 197 diff_filter_ctx->kernel_scaling = 0.1; 198 diff_filter_ctx->damping_function = DIFF_FILTER_DAMP_NONE; 199 diff_filter_ctx->friction_length = 0; 200 diff_filter_ctx->damping_constant = 25; 201 202 PetscOptionsBegin(comm, NULL, "Differential Filtering Options", NULL); 203 PetscInt narray = 3; 204 PetscCall(PetscOptionsBool("-diff_filter_grid_based_width", "Use filter width based on the grid size", NULL, diff_filter_ctx->grid_based_width, 205 (PetscBool *)&diff_filter_ctx->grid_based_width, NULL)); 206 PetscCall(PetscOptionsRealArray("-diff_filter_width_scaling", "Anisotropic scaling of filter width tensor", NULL, diff_filter_ctx->width_scaling, 207 &narray, NULL)); 208 PetscCall(PetscOptionsReal("-diff_filter_kernel_scaling", "Scaling to make differential kernel size \"equivalent\" to other filter kernels", NULL, 209 diff_filter_ctx->kernel_scaling, &diff_filter_ctx->kernel_scaling, NULL)); 210 PetscCall(PetscOptionsEnum("-diff_filter_wall_damping_function", "Damping function to use at the wall", NULL, DifferentialFilterDampingFunctions, 211 (PetscEnum)(diff_filter_ctx->damping_function), (PetscEnum *)&diff_filter_ctx->damping_function, NULL)); 212 PetscCall(PetscOptionsReal("-diff_filter_wall_damping_constant", "Contant for the wall-damping function", NULL, diff_filter_ctx->damping_constant, 213 &diff_filter_ctx->damping_constant, NULL)); 214 PetscCall(PetscOptionsReal("-diff_filter_friction_length", "Friction length associated with the flow, \\delta_\\nu. For wall-damping functions", 215 NULL, diff_filter_ctx->friction_length, &diff_filter_ctx->friction_length, NULL)); 216 PetscOptionsEnd(); 217 218 Units units = user->units; 219 for (int i = 0; i < 3; i++) diff_filter_ctx->width_scaling[i] *= units->meter; 220 diff_filter_ctx->kernel_scaling *= units->meter; 221 diff_filter_ctx->friction_length *= units->meter; 222 223 // -- Create QFContext 224 CeedQFunctionContextGetDataRead(problem->apply_vol_ifunction.qfunction_context, CEED_MEM_HOST, &gas); 225 diff_filter_ctx->gas = *gas; 226 CeedQFunctionContextRestoreDataRead(problem->apply_vol_ifunction.qfunction_context, &gas); 227 228 CeedQFunctionContextCreate(ceed, &diff_filter_qfctx); 229 CeedQFunctionContextSetData(diff_filter_qfctx, CEED_MEM_HOST, CEED_USE_POINTER, sizeof(*diff_filter_ctx), diff_filter_ctx); 230 CeedQFunctionContextSetDataDestroy(diff_filter_qfctx, CEED_MEM_HOST, FreeContextPetsc); 231 232 // -- Setup Operators 233 PetscCall(DifferentialFilterCreateOperators(ceed, user, ceed_data, diff_filter_qfctx)); 234 235 CeedQFunctionContextDestroy(&diff_filter_qfctx); 236 PetscFunctionReturn(0); 237 } 238 239 // @brief Apply differential filter to the solution given by Q 240 PetscErrorCode DifferentialFilterApply(User user, const PetscReal solution_time, const Vec Q, Vec Filtered_Solution) { 241 DiffFilterData diff_filter = user->diff_filter; 242 243 PetscFunctionBeginUser; 244 PetscCall(UpdateBoundaryValues(user, diff_filter->op_rhs_ctx->X_loc, solution_time)); 245 ApplyCeedOperatorGlobalToGlobal(Q, Filtered_Solution, diff_filter->op_rhs_ctx); 246 PetscCall(VecViewFromOptions(Filtered_Solution, NULL, "-diff_filter_rhs_view")); 247 248 PetscCall(KSPSolve(diff_filter->ksp, Filtered_Solution, Filtered_Solution)); 249 250 PetscFunctionReturn(0); 251 } 252 253 // @brief TSMonitor for just applying differential filtering to the simulation 254 // This runs every time step and is primarily for testing purposes 255 PetscErrorCode TSMonitor_DifferentialFilter(TS ts, PetscInt steps, PetscReal solution_time, Vec Q, void *ctx) { 256 User user = (User)ctx; 257 DiffFilterData diff_filter = user->diff_filter; 258 Vec Filtered_Field; 259 260 PetscFunctionBeginUser; 261 PetscCall(DMGetGlobalVector(diff_filter->dm_filter, &Filtered_Field)); 262 263 PetscCall(DifferentialFilterApply(user, solution_time, Q, Filtered_Field)); 264 PetscCall(VecViewFromOptions(Filtered_Field, NULL, "-diff_filter_view")); 265 if (user->app_ctx->test_type == TESTTYPE_DIFF_FILTER) PetscCall(RegressionTests_NS(user->app_ctx, Filtered_Field)); 266 267 PetscCall(DMRestoreGlobalVector(diff_filter->dm_filter, &Filtered_Field)); 268 269 PetscFunctionReturn(0); 270 } 271 272 PetscErrorCode DifferentialFilterDataDestroy(DiffFilterData diff_filter) { 273 PetscFunctionBeginUser; 274 if (!diff_filter) PetscFunctionReturn(0); 275 276 OperatorApplyContextDestroy(diff_filter->op_rhs_ctx); 277 PetscCall(DMDestroy(&diff_filter->dm_filter)); 278 PetscCall(KSPDestroy(&diff_filter->ksp)); 279 280 PetscCall(PetscFree(diff_filter)); 281 282 PetscFunctionReturn(0); 283 } 284 285 PetscErrorCode DifferentialFilter_MMS_ICSetup(ProblemData *problem) { 286 PetscFunctionBeginUser; 287 problem->ics.qfunction = DifferentialFilter_MMS_IC; 288 problem->ics.qfunction_loc = DifferentialFilter_MMS_IC_loc; 289 290 PetscFunctionReturn(0); 291 } 292