1 // SPDX-FileCopyrightText: Copyright (c) 2017-2024, HONEE contributors. 2 // SPDX-License-Identifier: Apache-2.0 OR BSD-2-Clause 3 4 /// @file 5 /// Utility functions for setting up SHOCKTUBE 6 7 #include "../qfunctions/shocktube.h" 8 9 #include <ceed.h> 10 #include <petscdm.h> 11 12 #include <navierstokes.h> 13 14 PetscErrorCode NS_SHOCKTUBE(ProblemData problem, DM dm, void *ctx) { 15 SetupContextShock setup_context; 16 Honee honee = *(Honee *)ctx; 17 MPI_Comm comm = honee->comm; 18 Ceed ceed = honee->ceed; 19 PetscBool implicit; 20 PetscBool yzb; 21 PetscInt stab; 22 ShockTubeContext shocktube_ctx; 23 CeedQFunctionContext shocktube_qfctx; 24 25 PetscFunctionBeginUser; 26 PetscCall(PetscCalloc1(1, &setup_context)); 27 PetscCall(PetscCalloc1(1, &shocktube_ctx)); 28 29 // ------------------------------------------------------ 30 // SET UP SHOCKTUBE 31 // ------------------------------------------------------ 32 problem->ics.qf_func_ptr = ICsShockTube; 33 problem->ics.qf_loc = ICsShockTube_loc; 34 problem->apply_vol_rhs.qf_func_ptr = EulerShockTube; 35 problem->apply_vol_rhs.qf_loc = EulerShockTube_loc; 36 problem->apply_vol_ifunction.qf_func_ptr = NULL; 37 problem->apply_vol_ifunction.qf_loc = NULL; 38 problem->jac_data_size_vol = 0; 39 problem->compute_exact_solution_error = PETSC_FALSE; 40 problem->print_info = PRINT_SHOCKTUBE; 41 42 // ------------------------------------------------------ 43 // Create the QFunction context 44 // ------------------------------------------------------ 45 // Driver section initial conditions 46 CeedScalar P_high = 1.0; // Pa 47 CeedScalar rho_high = 1.0; // kg/m^3 48 // Driven section initial conditions 49 CeedScalar P_low = 0.1; // Pa 50 CeedScalar rho_low = 0.125; // kg/m^3 51 // Stabilization parameter 52 CeedScalar c_tau = 0.5; // -, based on Hughes et al (2010) 53 // Tuning parameters for the YZB shock capturing 54 CeedScalar Cyzb = 0.1; // -, used in approximation of (Na),x 55 CeedScalar Byzb = 2.0; // -, 1 for smooth shocks 56 // 2 for sharp shocks 57 PetscReal domain_min[3], domain_max[3], domain_size[3]; 58 PetscCall(DMGetBoundingBox(dm, domain_min, domain_max)); 59 for (PetscInt i = 0; i < 3; i++) domain_size[i] = domain_max[i] - domain_min[i]; 60 61 // ------------------------------------------------------ 62 // Create the PETSc context 63 // ------------------------------------------------------ 64 PetscScalar meter = 1e-2; // 1 meter in scaled length units 65 PetscScalar second = 1e-2; // 1 second in scaled time units 66 67 // ------------------------------------------------------ 68 // Command line Options 69 // ------------------------------------------------------ 70 PetscOptionsBegin(comm, NULL, "Options for SHOCKTUBE problem", NULL); 71 72 // -- Numerical formulation options 73 PetscCall(PetscOptionsBool("-implicit", "Use implicit (IFunction) formulation", NULL, implicit = PETSC_FALSE, &implicit, NULL)); 74 PetscCall(PetscOptionsEnum("-stab", "Stabilization method", NULL, StabilizationTypes, (PetscEnum)(stab = STAB_NONE), (PetscEnum *)&stab, NULL)); 75 PetscCall(PetscOptionsScalar("-c_tau", "Stabilization constant", NULL, c_tau, &c_tau, NULL)); 76 PetscCall(PetscOptionsBool("-yzb", "Use YZB discontinuity capturing", NULL, yzb = PETSC_FALSE, &yzb, NULL)); 77 78 // -- Units 79 PetscCall(PetscOptionsScalar("-units_meter", "1 meter in scaled length units", NULL, meter, &meter, NULL)); 80 meter = fabs(meter); 81 PetscCall(PetscOptionsScalar("-units_second", "1 second in scaled time units", NULL, second, &second, NULL)); 82 second = fabs(second); 83 84 // -- Warnings 85 if (stab == STAB_SUPG) { 86 PetscCall(PetscPrintf(comm, "Warning! -stab supg not implemented for the shocktube problem. \n")); 87 } 88 if (yzb && implicit) { 89 PetscCall(PetscPrintf(comm, "Warning! -yzb only implemented for explicit timestepping. \n")); 90 } 91 92 PetscOptionsEnd(); 93 94 // ------------------------------------------------------ 95 // Set up the PETSc context 96 // ------------------------------------------------------ 97 honee->units->meter = meter; 98 honee->units->second = second; 99 100 // ------------------------------------------------------ 101 // Set up the QFunction context 102 // ------------------------------------------------------ 103 // -- Scale variables to desired units 104 for (PetscInt i = 0; i < 3; i++) { 105 domain_size[i] *= meter; 106 domain_min[i] *= meter; 107 } 108 CeedScalar mid_point = 0.5 * (domain_size[0] + domain_min[0]); 109 110 // -- Setup Context 111 setup_context->mid_point = mid_point; 112 setup_context->time = 0.0; 113 setup_context->P_high = P_high; 114 setup_context->rho_high = rho_high; 115 setup_context->P_low = P_low; 116 setup_context->rho_low = rho_low; 117 118 // -- QFunction Context 119 honee->phys->implicit = implicit; 120 shocktube_ctx->implicit = implicit; 121 shocktube_ctx->stabilization = stab; 122 shocktube_ctx->yzb = yzb; 123 shocktube_ctx->Cyzb = Cyzb; 124 shocktube_ctx->Byzb = Byzb; 125 shocktube_ctx->c_tau = c_tau; 126 127 PetscCallCeed(ceed, CeedQFunctionContextCreate(honee->ceed, &problem->ics.qfctx)); 128 PetscCallCeed(ceed, CeedQFunctionContextSetData(problem->ics.qfctx, CEED_MEM_HOST, CEED_USE_POINTER, sizeof(*setup_context), setup_context)); 129 PetscCallCeed(ceed, CeedQFunctionContextSetDataDestroy(problem->ics.qfctx, CEED_MEM_HOST, FreeContextPetsc)); 130 131 PetscCallCeed(ceed, CeedQFunctionContextCreate(honee->ceed, &shocktube_qfctx)); 132 PetscCallCeed(ceed, CeedQFunctionContextSetData(shocktube_qfctx, CEED_MEM_HOST, CEED_USE_POINTER, sizeof(*shocktube_ctx), shocktube_ctx)); 133 PetscCallCeed(ceed, CeedQFunctionContextSetDataDestroy(shocktube_qfctx, CEED_MEM_HOST, FreeContextPetsc)); 134 problem->apply_vol_rhs.qfctx = shocktube_qfctx; 135 PetscFunctionReturn(PETSC_SUCCESS); 136 } 137 138 PetscErrorCode PRINT_SHOCKTUBE(Honee honee, ProblemData problem, AppCtx app_ctx) { 139 MPI_Comm comm = honee->comm; 140 141 PetscFunctionBeginUser; 142 PetscCall(PetscPrintf(comm, 143 " Problem:\n" 144 " Problem Name : %s\n", 145 app_ctx->problem_name)); 146 PetscFunctionReturn(PETSC_SUCCESS); 147 } 148