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 projecting the velocity gradient 9 10 #include "../qfunctions/velocity_gradient_projection.h" 11 12 #include <petscdmplex.h> 13 14 #include "../navierstokes.h" 15 16 PetscErrorCode VelocityGradientProjectionCreateDM(NodalProjectionData grad_velo_proj, User user, PetscInt degree) { 17 PetscFE fe; 18 PetscSection section; 19 PetscInt dim; 20 21 PetscFunctionBeginUser; 22 grad_velo_proj->num_comp = 9; // 9 velocity gradient 23 24 PetscCall(DMClone(user->dm, &grad_velo_proj->dm)); 25 PetscCall(DMGetDimension(grad_velo_proj->dm, &dim)); 26 PetscCall(PetscObjectSetName((PetscObject)grad_velo_proj->dm, "Velocity Gradient Projection")); 27 28 PetscCall(PetscFECreateLagrange(PETSC_COMM_SELF, dim, grad_velo_proj->num_comp, PETSC_FALSE, degree, PETSC_DECIDE, &fe)); 29 PetscCall(PetscObjectSetName((PetscObject)fe, "Velocity Gradient Projection")); 30 PetscCall(DMAddField(grad_velo_proj->dm, NULL, (PetscObject)fe)); 31 PetscCall(DMCreateDS(grad_velo_proj->dm)); 32 PetscCall(DMPlexSetClosurePermutationTensor(grad_velo_proj->dm, PETSC_DETERMINE, NULL)); 33 34 PetscCall(DMGetLocalSection(grad_velo_proj->dm, §ion)); 35 PetscCall(PetscSectionSetFieldName(section, 0, "")); 36 PetscCall(PetscSectionSetComponentName(section, 0, 0, "VelocityGradientXX")); 37 PetscCall(PetscSectionSetComponentName(section, 0, 1, "VelocityGradientXY")); 38 PetscCall(PetscSectionSetComponentName(section, 0, 2, "VelocityGradientXZ")); 39 PetscCall(PetscSectionSetComponentName(section, 0, 3, "VelocityGradientYX")); 40 PetscCall(PetscSectionSetComponentName(section, 0, 4, "VelocityGradientYY")); 41 PetscCall(PetscSectionSetComponentName(section, 0, 5, "VelocityGradientYZ")); 42 PetscCall(PetscSectionSetComponentName(section, 0, 6, "VelocityGradientZX")); 43 PetscCall(PetscSectionSetComponentName(section, 0, 7, "VelocityGradientZY")); 44 PetscCall(PetscSectionSetComponentName(section, 0, 8, "VelocityGradientZZ")); 45 46 PetscCall(PetscFEDestroy(&fe)); 47 PetscFunctionReturn(PETSC_SUCCESS); 48 }; 49 50 PetscErrorCode VelocityGradientProjectionSetup(Ceed ceed, User user, CeedData ceed_data, ProblemData *problem) { 51 OperatorApplyContext mass_matop_ctx; 52 CeedOperator op_rhs_assemble, op_mass; 53 CeedQFunction qf_rhs_assemble, qf_mass; 54 CeedBasis basis_grad_velo; 55 CeedElemRestriction elem_restr_grad_velo; 56 PetscInt dim, num_comp_x, num_comp_q, q_data_size, num_qpts_1d, num_nodes_1d; 57 58 PetscFunctionBeginUser; 59 PetscCall(PetscNew(&user->grad_velo_proj)); 60 NodalProjectionData grad_velo_proj = user->grad_velo_proj; 61 62 PetscCall(VelocityGradientProjectionCreateDM(grad_velo_proj, user, user->app_ctx->degree)); 63 64 // -- Get Pre-requisite things 65 PetscCall(DMGetDimension(grad_velo_proj->dm, &dim)); 66 CeedBasisGetNumComponents(ceed_data->basis_x, &num_comp_x); 67 CeedBasisGetNumComponents(ceed_data->basis_q, &num_comp_q); 68 CeedBasisGetNumQuadraturePoints1D(ceed_data->basis_q, &num_qpts_1d); 69 CeedBasisGetNumNodes1D(ceed_data->basis_q, &num_nodes_1d); 70 CeedElemRestrictionGetNumComponents(ceed_data->elem_restr_qd_i, &q_data_size); 71 72 PetscCall(GetRestrictionForDomain(ceed, grad_velo_proj->dm, 0, 0, 0, 0, num_qpts_1d, q_data_size, &elem_restr_grad_velo, NULL, NULL)); 73 74 CeedBasisCreateTensorH1Lagrange(ceed, dim, grad_velo_proj->num_comp, num_nodes_1d, num_qpts_1d, CEED_GAUSS, &basis_grad_velo); 75 76 // -- Build RHS operator 77 switch (user->phys->state_var) { 78 case STATEVAR_PRIMITIVE: 79 CeedQFunctionCreateInterior(ceed, 1, VelocityGradientProjectionRHS_Prim, VelocityGradientProjectionRHS_Prim_loc, &qf_rhs_assemble); 80 break; 81 case STATEVAR_CONSERVATIVE: 82 CeedQFunctionCreateInterior(ceed, 1, VelocityGradientProjectionRHS_Conserv, VelocityGradientProjectionRHS_Conserv_loc, &qf_rhs_assemble); 83 break; 84 default: 85 SETERRQ(PetscObjectComm((PetscObject)user->dm), PETSC_ERR_SUP, "No velocity gradient projection QFunction for chosen state variable"); 86 } 87 88 CeedQFunctionSetContext(qf_rhs_assemble, problem->apply_vol_ifunction.qfunction_context); 89 CeedQFunctionAddInput(qf_rhs_assemble, "q", num_comp_q, CEED_EVAL_INTERP); 90 CeedQFunctionAddInput(qf_rhs_assemble, "Grad_q", num_comp_q * dim, CEED_EVAL_GRAD); 91 CeedQFunctionAddInput(qf_rhs_assemble, "qdata", q_data_size, CEED_EVAL_NONE); 92 CeedQFunctionAddInput(qf_rhs_assemble, "x", num_comp_x, CEED_EVAL_INTERP); 93 CeedQFunctionAddOutput(qf_rhs_assemble, "velocity gradient", grad_velo_proj->num_comp, CEED_EVAL_INTERP); 94 95 CeedOperatorCreate(ceed, qf_rhs_assemble, NULL, NULL, &op_rhs_assemble); 96 CeedOperatorSetField(op_rhs_assemble, "q", ceed_data->elem_restr_q, ceed_data->basis_q, CEED_VECTOR_ACTIVE); 97 CeedOperatorSetField(op_rhs_assemble, "Grad_q", ceed_data->elem_restr_q, ceed_data->basis_q, CEED_VECTOR_ACTIVE); 98 CeedOperatorSetField(op_rhs_assemble, "qdata", ceed_data->elem_restr_qd_i, CEED_BASIS_COLLOCATED, ceed_data->q_data); 99 CeedOperatorSetField(op_rhs_assemble, "x", ceed_data->elem_restr_x, ceed_data->basis_x, ceed_data->x_coord); 100 CeedOperatorSetField(op_rhs_assemble, "velocity gradient", elem_restr_grad_velo, basis_grad_velo, CEED_VECTOR_ACTIVE); 101 102 PetscCall(OperatorApplyContextCreate(user->dm, grad_velo_proj->dm, ceed, op_rhs_assemble, NULL, NULL, NULL, NULL, &grad_velo_proj->l2_rhs_ctx)); 103 104 // -- Build Mass operator 105 PetscCall(CreateMassQFunction(ceed, grad_velo_proj->num_comp, q_data_size, &qf_mass)); 106 CeedOperatorCreate(ceed, qf_mass, NULL, NULL, &op_mass); 107 CeedOperatorSetField(op_mass, "u", elem_restr_grad_velo, basis_grad_velo, CEED_VECTOR_ACTIVE); 108 CeedOperatorSetField(op_mass, "qdata", ceed_data->elem_restr_qd_i, CEED_BASIS_COLLOCATED, ceed_data->q_data); 109 CeedOperatorSetField(op_mass, "v", elem_restr_grad_velo, basis_grad_velo, CEED_VECTOR_ACTIVE); 110 111 { // -- Setup KSP for L^2 projection with lumped mass operator 112 Mat mat_mass; 113 MPI_Comm comm = PetscObjectComm((PetscObject)grad_velo_proj->dm); 114 115 PetscCall(OperatorApplyContextCreate(grad_velo_proj->dm, grad_velo_proj->dm, ceed, op_mass, NULL, NULL, NULL, NULL, &mass_matop_ctx)); 116 PetscCall(CreateMatShell_Ceed(mass_matop_ctx, &mat_mass)); 117 118 PetscCall(KSPCreate(comm, &grad_velo_proj->ksp)); 119 PetscCall(KSPSetOptionsPrefix(grad_velo_proj->ksp, "velocity_gradient_projection_")); 120 { 121 PC pc; 122 PetscCall(KSPGetPC(grad_velo_proj->ksp, &pc)); 123 PetscCall(PCSetType(pc, PCJACOBI)); 124 PetscCall(PCJacobiSetType(pc, PC_JACOBI_ROWSUM)); 125 PetscCall(KSPSetType(grad_velo_proj->ksp, KSPPREONLY)); 126 // TODO Not sure if the option below are necessary 127 PetscCall(KSPSetConvergenceTest(grad_velo_proj->ksp, KSPConvergedSkip, NULL, NULL)); 128 } 129 PetscCall(KSPSetOperators(grad_velo_proj->ksp, mat_mass, mat_mass)); 130 PetscCall(KSPSetFromOptions(grad_velo_proj->ksp)); 131 } 132 133 CeedBasisDestroy(&basis_grad_velo); 134 CeedElemRestrictionDestroy(&elem_restr_grad_velo); 135 CeedQFunctionDestroy(&qf_rhs_assemble); 136 CeedQFunctionDestroy(&qf_mass); 137 CeedOperatorDestroy(&op_rhs_assemble); 138 CeedOperatorDestroy(&op_mass); 139 PetscFunctionReturn(PETSC_SUCCESS); 140 } 141 142 PetscErrorCode VelocityGradientProjectionApply(User user, Vec Q_loc, Vec VelocityGradient) { 143 NodalProjectionData grad_velo_proj = user->grad_velo_proj; 144 OperatorApplyContext l2_rhs_ctx = grad_velo_proj->l2_rhs_ctx; 145 146 PetscFunctionBeginUser; 147 PetscCall(ApplyCeedOperatorLocalToGlobal(Q_loc, VelocityGradient, l2_rhs_ctx)); 148 149 PetscCall(KSPSolve(grad_velo_proj->ksp, VelocityGradient, VelocityGradient)); 150 151 PetscFunctionReturn(PETSC_SUCCESS); 152 } 153