1 // Copyright (c) 2017, Lawrence Livermore National Security, LLC. Produced at 2 // the Lawrence Livermore National Laboratory. LLNL-CODE-734707. All Rights 3 // reserved. See files LICENSE and NOTICE for details. 4 // 5 // This file is part of CEED, a collection of benchmarks, miniapps, software 6 // libraries and APIs for efficient high-order finite element and spectral 7 // element discretizations for exascale applications. For more information and 8 // source code availability see http://github.com/ceed. 9 // 10 // The CEED research is supported by the Exascale Computing Project 17-SC-20-SC, 11 // a collaborative effort of two U.S. Department of Energy organizations (Office 12 // of Science and the National Nuclear Security Administration) responsible for 13 // the planning and preparation of a capable exascale ecosystem, including 14 // software, applications, hardware, advanced system engineering and early 15 // testbed platforms, in support of the nation's exascale computing imperative. 16 17 /// @file 18 /// Utility functions for setting up DENSITY_CURRENT 19 20 #include "../navierstokes.h" 21 #include "../qfunctions/setupgeo.h" 22 #include "../qfunctions/densitycurrent.h" 23 24 PetscErrorCode NS_DENSITY_CURRENT(ProblemData *problem, void *setup_ctx, 25 void *ctx) { 26 SetupContext setup_context = *(SetupContext *)setup_ctx; 27 User user = *(User *)ctx; 28 StabilizationType stab; 29 MPI_Comm comm = PETSC_COMM_WORLD; 30 PetscBool implicit; 31 PetscBool has_curr_time = PETSC_FALSE; 32 PetscInt ierr; 33 PetscFunctionBeginUser; 34 35 ierr = PetscCalloc1(1, &user->phys->dc_ctx); CHKERRQ(ierr); 36 37 // ------------------------------------------------------ 38 // SET UP DENSITY_CURRENT 39 // ------------------------------------------------------ 40 problem->dim = 3; 41 problem->q_data_size_vol = 10; 42 problem->q_data_size_sur = 4; 43 problem->setup_vol = Setup; 44 problem->setup_vol_loc = Setup_loc; 45 problem->setup_sur = SetupBoundary; 46 problem->setup_sur_loc = SetupBoundary_loc; 47 problem->ics = ICsDC; 48 problem->ics_loc = ICsDC_loc; 49 problem->apply_vol_rhs = DC; 50 problem->apply_vol_rhs_loc = DC_loc; 51 problem->apply_vol_ifunction = IFunction_DC; 52 problem->apply_vol_ifunction_loc = IFunction_DC_loc; 53 problem->bc = Exact_DC; 54 problem->setup_ctx = SetupContext_DENSITY_CURRENT; 55 problem->bc_func = BC_DENSITY_CURRENT; 56 problem->non_zero_time = PETSC_FALSE; 57 problem->print_info = PRINT_DENSITY_CURRENT; 58 59 // ------------------------------------------------------ 60 // Create the libCEED context 61 // ------------------------------------------------------ 62 CeedScalar theta0 = 300.; // K 63 CeedScalar thetaC = -15.; // K 64 CeedScalar P0 = 1.e5; // Pa 65 CeedScalar N = 0.01; // 1/s 66 CeedScalar cv = 717.; // J/(kg K) 67 CeedScalar cp = 1004.; // J/(kg K) 68 CeedScalar g = 9.81; // m/s^2 69 CeedScalar lambda = -2./3.; // - 70 CeedScalar mu = 75.; // Pa s, dynamic viscosity 71 // mu = 75 is not physical for air, but is good for numerical stability 72 CeedScalar k = 0.02638; // W/(m K) 73 PetscScalar lx = 8000.; // m 74 PetscScalar ly = 8000.; // m 75 PetscScalar lz = 4000.; // m 76 CeedScalar rc = 1000.; // m (Radius of bubble) 77 PetscReal center[3], dc_axis[3] = {0, 0, 0}; 78 CeedScalar Rd; 79 80 // ------------------------------------------------------ 81 // Create the PETSc context 82 // ------------------------------------------------------ 83 PetscScalar meter = 1e-2; // 1 meter in scaled length units 84 PetscScalar kilogram = 1e-6; // 1 kilogram in scaled mass units 85 PetscScalar second = 1e-2; // 1 second in scaled time units 86 PetscScalar Kelvin = 1; // 1 Kelvin in scaled temperature units 87 PetscScalar W_per_m_K, Pascal, J_per_kg_K, m_per_squared_s; 88 89 // ------------------------------------------------------ 90 // Command line Options 91 // ------------------------------------------------------ 92 ierr = PetscOptionsBegin(comm, NULL, "Options for DENSITY_CURRENT problem", 93 NULL); CHKERRQ(ierr); 94 // -- Physics 95 ierr = PetscOptionsScalar("-theta0", "Reference potential temperature", 96 NULL, theta0, &theta0, NULL); CHKERRQ(ierr); 97 ierr = PetscOptionsScalar("-thetaC", "Perturbation of potential temperature", 98 NULL, thetaC, &thetaC, NULL); CHKERRQ(ierr); 99 ierr = PetscOptionsScalar("-P0", "Atmospheric pressure", 100 NULL, P0, &P0, NULL); CHKERRQ(ierr); 101 ierr = PetscOptionsScalar("-N", "Brunt-Vaisala frequency", 102 NULL, N, &N, NULL); CHKERRQ(ierr); 103 ierr = PetscOptionsScalar("-cv", "Heat capacity at constant volume", 104 NULL, cv, &cv, NULL); CHKERRQ(ierr); 105 ierr = PetscOptionsScalar("-cp", "Heat capacity at constant pressure", 106 NULL, cp, &cp, NULL); CHKERRQ(ierr); 107 ierr = PetscOptionsScalar("-g", "Gravitational acceleration", 108 NULL, g, &g, NULL); CHKERRQ(ierr); 109 ierr = PetscOptionsScalar("-lambda", 110 "Stokes hypothesis second viscosity coefficient", 111 NULL, lambda, &lambda, NULL); CHKERRQ(ierr); 112 ierr = PetscOptionsScalar("-mu", "Shear dynamic viscosity coefficient", 113 NULL, mu, &mu, NULL); CHKERRQ(ierr); 114 ierr = PetscOptionsScalar("-k", "Thermal conductivity", 115 NULL, k, &k, NULL); CHKERRQ(ierr); 116 ierr = PetscOptionsScalar("-lx", "Length scale in x direction", 117 NULL, lx, &lx, NULL); CHKERRQ(ierr); 118 ierr = PetscOptionsScalar("-ly", "Length scale in y direction", 119 NULL, ly, &ly, NULL); CHKERRQ(ierr); 120 ierr = PetscOptionsScalar("-lz", "Length scale in z direction", 121 NULL, lz, &lz, NULL); CHKERRQ(ierr); 122 ierr = PetscOptionsScalar("-rc", "Characteristic radius of thermal bubble", 123 NULL, rc, &rc, NULL); CHKERRQ(ierr); 124 PetscInt n = problem->dim; 125 center[0] = 0.5 * lx; 126 center[1] = 0.5 * ly; 127 center[2] = 0.5 * lz; 128 ierr = PetscOptionsRealArray("-center", "Location of bubble center", 129 NULL, center, &n, NULL); CHKERRQ(ierr); 130 n = problem->dim; 131 ierr = PetscOptionsRealArray("-dc_axis", 132 "Axis of density current cylindrical anomaly, or {0,0,0} for spherically symmetric", 133 NULL, dc_axis, &n, NULL); CHKERRQ(ierr); 134 { 135 PetscReal norm = PetscSqrtReal(PetscSqr(dc_axis[0]) + PetscSqr(dc_axis[1]) + 136 PetscSqr(dc_axis[2])); 137 if (norm > 0) { 138 for (int i=0; i<3; i++) dc_axis[i] /= norm; 139 } 140 } 141 ierr = PetscOptionsEnum("-stab", "Stabilization method", NULL, 142 StabilizationTypes, (PetscEnum)(stab = STAB_NONE), 143 (PetscEnum *)&stab, NULL); CHKERRQ(ierr); 144 145 ierr = PetscOptionsBool("-implicit", "Use implicit (IFunction) formulation", 146 NULL, implicit=PETSC_FALSE, &implicit, NULL); 147 CHKERRQ(ierr); 148 149 // -- Units 150 ierr = PetscOptionsScalar("-units_meter", "1 meter in scaled length units", 151 NULL, meter, &meter, NULL); CHKERRQ(ierr); 152 meter = fabs(meter); 153 ierr = PetscOptionsScalar("-units_kilogram","1 kilogram in scaled mass units", 154 NULL, kilogram, &kilogram, NULL); CHKERRQ(ierr); 155 kilogram = fabs(kilogram); 156 ierr = PetscOptionsScalar("-units_second","1 second in scaled time units", 157 NULL, second, &second, NULL); CHKERRQ(ierr); 158 second = fabs(second); 159 ierr = PetscOptionsScalar("-units_Kelvin", 160 "1 Kelvin in scaled temperature units", 161 NULL, Kelvin, &Kelvin, NULL); CHKERRQ(ierr); 162 Kelvin = fabs(Kelvin); 163 164 // -- Warnings 165 if (stab == STAB_SUPG && !implicit) { 166 ierr = PetscPrintf(comm, 167 "Warning! Use -stab supg only with -implicit\n"); 168 CHKERRQ(ierr); 169 } 170 171 ierr = PetscOptionsEnd(); CHKERRQ(ierr); 172 173 // ------------------------------------------------------ 174 // Set up the PETSc context 175 // ------------------------------------------------------ 176 // -- Define derived units 177 Pascal = kilogram / (meter * PetscSqr(second)); 178 J_per_kg_K = PetscSqr(meter) / (PetscSqr(second) * Kelvin); 179 m_per_squared_s = meter / PetscSqr(second); 180 W_per_m_K = kilogram * meter / (pow(second,3) * Kelvin); 181 182 user->units->meter = meter; 183 user->units->kilogram = kilogram; 184 user->units->second = second; 185 user->units->Kelvin = Kelvin; 186 user->units->Pascal = Pascal; 187 user->units->J_per_kg_K = J_per_kg_K; 188 user->units->m_per_squared_s = m_per_squared_s; 189 user->units->W_per_m_K = W_per_m_K; 190 191 // ------------------------------------------------------ 192 // Set up the libCEED context 193 // ------------------------------------------------------ 194 // -- Scale variables to desired units 195 theta0 *= Kelvin; 196 thetaC *= Kelvin; 197 P0 *= Pascal; 198 N *= (1./second); 199 cv *= J_per_kg_K; 200 cp *= J_per_kg_K; 201 Rd = cp - cv; 202 g *= m_per_squared_s; 203 mu *= Pascal * second; 204 k *= W_per_m_K; 205 lx = fabs(lx) * meter; 206 ly = fabs(ly) * meter; 207 lz = fabs(lz) * meter; 208 rc = fabs(rc) * meter; 209 for (int i=0; i<3; i++) center[i] *= meter; 210 211 // -- Setup Context 212 setup_context->theta0 = theta0; 213 setup_context->thetaC = thetaC; 214 setup_context->P0 = P0; 215 setup_context->N = N; 216 setup_context->cv = cv; 217 setup_context->cp = cp; 218 setup_context->Rd = Rd; 219 setup_context->g = g; 220 setup_context->rc = rc; 221 setup_context->lx = lx; 222 setup_context->ly = ly; 223 setup_context->lz = lz; 224 setup_context->center[0] = center[0]; 225 setup_context->center[1] = center[1]; 226 setup_context->center[2] = center[2]; 227 setup_context->dc_axis[0] = dc_axis[0]; 228 setup_context->dc_axis[1] = dc_axis[1]; 229 setup_context->dc_axis[2] = dc_axis[2]; 230 setup_context->time = 0; 231 232 // -- QFunction Context 233 user->phys->stab = stab; 234 user->phys->implicit = implicit; 235 user->phys->has_curr_time = has_curr_time; 236 user->phys->dc_ctx->lambda = lambda; 237 user->phys->dc_ctx->mu = mu; 238 user->phys->dc_ctx->k = k; 239 user->phys->dc_ctx->cv = cv; 240 user->phys->dc_ctx->cp = cp; 241 user->phys->dc_ctx->g = g; 242 user->phys->dc_ctx->Rd = Rd; 243 user->phys->dc_ctx->stabilization = stab; 244 245 PetscFunctionReturn(0); 246 } 247 248 PetscErrorCode SetupContext_DENSITY_CURRENT(Ceed ceed, CeedData ceed_data, 249 AppCtx app_ctx, SetupContext setup_ctx, 250 Physics phys) { 251 PetscFunctionBeginUser; 252 253 CeedQFunctionContextCreate(ceed, &ceed_data->setup_context); 254 CeedQFunctionContextSetData(ceed_data->setup_context, CEED_MEM_HOST, 255 CEED_USE_POINTER, sizeof(*setup_ctx), setup_ctx); 256 CeedQFunctionSetContext(ceed_data->qf_ics, ceed_data->setup_context); 257 CeedQFunctionContextCreate(ceed, &ceed_data->dc_context); 258 CeedQFunctionContextSetData(ceed_data->dc_context, CEED_MEM_HOST, 259 CEED_USE_POINTER, 260 sizeof(*phys->dc_ctx), phys->dc_ctx); 261 if (ceed_data->qf_rhs_vol) 262 CeedQFunctionSetContext(ceed_data->qf_rhs_vol, ceed_data->dc_context); 263 if (ceed_data->qf_ifunction_vol) 264 CeedQFunctionSetContext(ceed_data->qf_ifunction_vol, ceed_data->dc_context); 265 266 PetscFunctionReturn(0); 267 } 268 269 PetscErrorCode BC_DENSITY_CURRENT(DM dm, SimpleBC bc, Physics phys, 270 void *setup_ctx) { 271 272 PetscInt len; 273 PetscBool flg; 274 MPI_Comm comm = PETSC_COMM_WORLD; 275 PetscErrorCode ierr; 276 PetscFunctionBeginUser; 277 278 // Default boundary conditions 279 // slip bc on all faces and no wall bc 280 bc->num_slip[0] = bc->num_slip[1] = bc->num_slip[2] = 2; 281 bc->slips[0][0] = 5; 282 bc->slips[0][1] = 6; 283 bc->slips[1][0] = 3; 284 bc->slips[1][1] = 4; 285 bc->slips[2][0] = 1; 286 bc->slips[2][1] = 2; 287 288 // Parse command line options 289 ierr = PetscOptionsBegin(comm, NULL, "Options for DENSITY_CURRENT BCs ", 290 NULL); CHKERRQ(ierr); 291 ierr = PetscOptionsIntArray("-bc_wall", 292 "Use wall boundary conditions on this list of faces", 293 NULL, bc->walls, 294 (len = sizeof(bc->walls) / sizeof(bc->walls[0]), 295 &len), &flg); CHKERRQ(ierr); 296 if (flg) { 297 bc->num_wall = len; 298 // Using a no-slip wall disables automatic slip walls (they must be set explicitly) 299 bc->num_slip[0] = bc->num_slip[1] = bc->num_slip[2] = 0; 300 } 301 for (PetscInt j=0; j<3; j++) { 302 const char *flags[3] = {"-bc_slip_x", "-bc_slip_y", "-bc_slip_z"}; 303 ierr = PetscOptionsIntArray(flags[j], 304 "Use slip boundary conditions on this list of faces", 305 NULL, bc->slips[j], 306 (len = sizeof(bc->slips[j]) / sizeof(bc->slips[j][0]), 307 &len), &flg); CHKERRQ(ierr); 308 if (flg) { 309 bc->num_slip[j] = len; 310 bc->user_bc = PETSC_TRUE; 311 } 312 } 313 ierr = PetscOptionsEnd(); CHKERRQ(ierr); 314 315 { 316 // Set slip boundary conditions 317 DMLabel label; 318 ierr = DMGetLabel(dm, "Face Sets", &label); CHKERRQ(ierr); 319 PetscInt comps[1] = {1}; 320 ierr = DMAddBoundary(dm, DM_BC_ESSENTIAL, "slipx", label, "Face Sets", 321 bc->num_slip[0], bc->slips[0], 0, 1, comps, 322 (void(*)(void))NULL, NULL, setup_ctx, NULL); 323 CHKERRQ(ierr); 324 comps[0] = 2; 325 ierr = DMAddBoundary(dm, DM_BC_ESSENTIAL, "slipy", label, "Face Sets", 326 bc->num_slip[1], bc->slips[1], 0, 1, comps, 327 (void(*)(void))NULL, NULL, setup_ctx, NULL); 328 CHKERRQ(ierr); 329 comps[0] = 3; 330 ierr = DMAddBoundary(dm, DM_BC_ESSENTIAL, "slipz", label, "Face Sets", 331 bc->num_slip[2], bc->slips[2], 0, 1, comps, 332 (void(*)(void))NULL, NULL, setup_ctx, NULL); 333 CHKERRQ(ierr); 334 } 335 336 if (bc->user_bc == PETSC_TRUE) { 337 for (PetscInt c = 0; c < 3; c++) { 338 for (PetscInt s = 0; s < bc->num_slip[c]; s++) { 339 for (PetscInt w = 0; w < bc->num_wall; w++) { 340 if (bc->slips[c][s] == bc->walls[w]) 341 SETERRQ1(PETSC_COMM_SELF, PETSC_ERR_ARG_WRONG, 342 "Boundary condition already set on face %D!\n", 343 bc->walls[w]); 344 } 345 } 346 } 347 } 348 349 // Set wall boundary conditions 350 // zero velocity and zero flux for mass density and energy density 351 { 352 DMLabel label; 353 PetscInt comps[3] = {1, 2, 3}; 354 ierr = DMGetLabel(dm, "Face Sets", &label); CHKERRQ(ierr); 355 ierr = DMAddBoundary(dm, DM_BC_ESSENTIAL, "wall", label, "Face Sets", 356 bc->num_wall, bc->walls, 0, 357 3, comps, (void(*)(void))Exact_DC, NULL, 358 setup_ctx, NULL); CHKERRQ(ierr); 359 } 360 361 PetscFunctionReturn(0); 362 } 363 364 PetscErrorCode PRINT_DENSITY_CURRENT(Physics phys, SetupContext setup_ctx, 365 AppCtx app_ctx) { 366 MPI_Comm comm = PETSC_COMM_WORLD; 367 PetscErrorCode ierr; 368 PetscFunctionBeginUser; 369 370 ierr = PetscPrintf(comm, 371 " Problem:\n" 372 " Problem Name : %s\n" 373 " Stabilization : %s\n", 374 app_ctx->problem_name, StabilizationTypes[phys->stab]); 375 CHKERRQ(ierr); 376 377 PetscFunctionReturn(0); 378 } 379