// Copyright (c) 2017, Lawrence Livermore National Security, LLC. Produced at // the Lawrence Livermore National Laboratory. LLNL-CODE-734707. All Rights // reserved. See files LICENSE and NOTICE for details. // // This file is part of CEED, a collection of benchmarks, miniapps, software // libraries and APIs for efficient high-order finite element and spectral // element discretizations for exascale applications. For more information and // source code availability see http://github.com/ceed. // // The CEED research is supported by the Exascale Computing Project 17-SC-20-SC, // a collaborative effort of two U.S. Department of Energy organizations (Office // of Science and the National Nuclear Security Administration) responsible for // the planning and preparation of a capable exascale ecosystem, including // software, applications, hardware, advanced system engineering and early // testbed platforms, in support of the nation's exascale computing imperative. /// @file /// Utility functions for setting up SHOCKTUBE #include "../navierstokes.h" #include "../qfunctions/setupgeo.h" #include "../qfunctions/shocktube.h" PetscErrorCode NS_SHOCKTUBE(ProblemData *problem, DM dm, void *ctx) { SetupContextShock setup_context; User user = *(User *)ctx; MPI_Comm comm = PETSC_COMM_WORLD; PetscBool implicit; PetscBool yzb; PetscInt stab; PetscBool has_curr_time = PETSC_FALSE; PetscInt ierr; ShockTubeContext shocktube_ctx; CeedQFunctionContext shocktube_context; PetscFunctionBeginUser; ierr = PetscCalloc1(1, &setup_context); CHKERRQ(ierr); ierr = PetscCalloc1(1, &shocktube_ctx); CHKERRQ(ierr); // ------------------------------------------------------ // SET UP SHOCKTUBE // ------------------------------------------------------ problem->dim = 3; problem->q_data_size_vol = 10; problem->q_data_size_sur = 4; problem->setup_vol.qfunction = Setup; problem->setup_vol.qfunction_loc = Setup_loc; problem->setup_sur.qfunction = SetupBoundary; problem->setup_sur.qfunction_loc = SetupBoundary_loc; problem->ics.qfunction = ICsShockTube; problem->ics.qfunction_loc = ICsShockTube_loc; problem->apply_vol_rhs.qfunction = EulerShockTube; problem->apply_vol_rhs.qfunction_loc = EulerShockTube_loc; problem->apply_vol_ifunction.qfunction = NULL; problem->apply_vol_ifunction.qfunction_loc = NULL; problem->bc = Exact_ShockTube; problem->bc_ctx = setup_context; problem->non_zero_time = PETSC_FALSE; problem->print_info = PRINT_SHOCKTUBE; // ------------------------------------------------------ // Create the libCEED context // ------------------------------------------------------ // Driver section initial conditions CeedScalar P_high = 1.0; // Pa CeedScalar rho_high = 1.0; // kg/m^3 // Driven section initial conditions CeedScalar P_low = 0.1; // Pa CeedScalar rho_low = 0.125; // kg/m^3 // Stabilization parameter CeedScalar c_tau = 0.5; // -, based on Hughes et al (2010) // Tuning parameters for the YZB shock capturing CeedScalar Cyzb = 0.1; // -, used in approximation of (Na),x CeedScalar Byzb = 2.0; // -, 1 for smooth shocks // 2 for sharp shocks PetscReal domain_min[3], domain_max[3], domain_size[3]; ierr = DMGetBoundingBox(dm, domain_min, domain_max); CHKERRQ(ierr); for (PetscInt i=0; i<3; i++) domain_size[i] = domain_max[i] - domain_min[i]; // ------------------------------------------------------ // Create the PETSc context // ------------------------------------------------------ PetscScalar meter = 1e-2; // 1 meter in scaled length units PetscScalar second = 1e-2; // 1 second in scaled time units // ------------------------------------------------------ // Command line Options // ------------------------------------------------------ PetscOptionsBegin(comm, NULL, "Options for SHOCKTUBE problem", NULL); // -- Numerical formulation options ierr = PetscOptionsBool("-implicit", "Use implicit (IFunction) formulation", NULL, implicit=PETSC_FALSE, &implicit, NULL); CHKERRQ(ierr); ierr = PetscOptionsEnum("-stab", "Stabilization method", NULL, StabilizationTypes, (PetscEnum)(stab = STAB_NONE), (PetscEnum *)&stab, NULL); CHKERRQ(ierr); ierr = PetscOptionsScalar("-c_tau", "Stabilization constant", NULL, c_tau, &c_tau, NULL); CHKERRQ(ierr); ierr = PetscOptionsBool("-yzb", "Use YZB discontinuity capturing", NULL, yzb=PETSC_FALSE, &yzb, NULL); CHKERRQ(ierr); // -- Units ierr = PetscOptionsScalar("-units_meter", "1 meter in scaled length units", NULL, meter, &meter, NULL); CHKERRQ(ierr); meter = fabs(meter); ierr = PetscOptionsScalar("-units_second","1 second in scaled time units", NULL, second, &second, NULL); CHKERRQ(ierr); second = fabs(second); // -- Warnings if (stab == STAB_SUPG) { ierr = PetscPrintf(comm, "Warning! -stab supg not implemented for the shocktube problem. \n"); CHKERRQ(ierr); } if (yzb && implicit) { ierr = PetscPrintf(comm, "Warning! -yzb only implemented for explicit timestepping. \n"); CHKERRQ(ierr); } PetscOptionsEnd(); // ------------------------------------------------------ // Set up the PETSc context // ------------------------------------------------------ user->units->meter = meter; user->units->second = second; // ------------------------------------------------------ // Set up the libCEED context // ------------------------------------------------------ // -- Scale variables to desired units for (PetscInt i=0; i<3; i++) { domain_size[i] *= meter; domain_min[i] *= meter; } problem->dm_scale = meter; CeedScalar mid_point = 0.5*(domain_size[0]+domain_min[0]); // -- Setup Context setup_context->mid_point = mid_point; setup_context->time = 0.0; setup_context->P_high = P_high; setup_context->rho_high = rho_high; setup_context->P_low = P_low; setup_context->rho_low = rho_low; // -- QFunction Context user->phys->implicit = implicit; user->phys->has_curr_time = has_curr_time; shocktube_ctx->implicit = implicit; shocktube_ctx->stabilization = stab; shocktube_ctx->yzb = yzb; shocktube_ctx->Cyzb = Cyzb; shocktube_ctx->Byzb = Byzb; shocktube_ctx->c_tau = c_tau; CeedQFunctionContextCreate(user->ceed, &problem->ics.qfunction_context); CeedQFunctionContextSetData(problem->ics.qfunction_context, CEED_MEM_HOST, CEED_USE_POINTER, sizeof(*setup_context), setup_context); CeedQFunctionContextSetDataDestroy(problem->ics.qfunction_context, CEED_MEM_HOST, FreeContextPetsc); CeedQFunctionContextCreate(user->ceed, &shocktube_context); CeedQFunctionContextSetData(shocktube_context, CEED_MEM_HOST, CEED_USE_POINTER, sizeof(*shocktube_ctx), shocktube_ctx); CeedQFunctionContextSetDataDestroy(shocktube_context, CEED_MEM_HOST, FreeContextPetsc); problem->apply_vol_rhs.qfunction_context = shocktube_context; PetscFunctionReturn(0); } PetscErrorCode PRINT_SHOCKTUBE(ProblemData *problem, AppCtx app_ctx) { MPI_Comm comm = PETSC_COMM_WORLD; PetscErrorCode ierr; PetscFunctionBeginUser; ierr = PetscPrintf(comm, " Problem:\n" " Problem Name : %s\n", app_ctx->problem_name); CHKERRQ(ierr); PetscFunctionReturn(0); }