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->bc_func = BC_DENSITY_CURRENT; 55 problem->non_zero_time = PETSC_FALSE; 56 problem->print_info = PRINT_DENSITY_CURRENT; 57 58 // ------------------------------------------------------ 59 // Create the libCEED context 60 // ------------------------------------------------------ 61 CeedScalar theta0 = 300.; // K 62 CeedScalar thetaC = -15.; // K 63 CeedScalar P0 = 1.e5; // Pa 64 CeedScalar N = 0.01; // 1/s 65 CeedScalar cv = 717.; // J/(kg K) 66 CeedScalar cp = 1004.; // J/(kg K) 67 CeedScalar g = 9.81; // m/s^2 68 CeedScalar lambda = -2./3.; // - 69 CeedScalar mu = 75.; // Pa s, dynamic viscosity 70 // mu = 75 is not physical for air, but is good for numerical stability 71 CeedScalar k = 0.02638; // W/(m K) 72 PetscScalar lx = 8000.; // m 73 PetscScalar ly = 8000.; // m 74 PetscScalar lz = 4000.; // m 75 CeedScalar rc = 1000.; // m (Radius of bubble) 76 PetscReal center[3], dc_axis[3] = {0, 0, 0}; 77 CeedScalar Rd; 78 79 // ------------------------------------------------------ 80 // Create the PETSc context 81 // ------------------------------------------------------ 82 PetscScalar meter = 1e-2; // 1 meter in scaled length units 83 PetscScalar kilogram = 1e-6; // 1 kilogram in scaled mass units 84 PetscScalar second = 1e-2; // 1 second in scaled time units 85 PetscScalar Kelvin = 1; // 1 Kelvin in scaled temperature units 86 PetscScalar W_per_m_K, Pascal, J_per_kg_K, m_per_squared_s; 87 88 // ------------------------------------------------------ 89 // Command line Options 90 // ------------------------------------------------------ 91 ierr = PetscOptionsBegin(comm, NULL, "Options for DENSITY_CURRENT problem", 92 NULL); CHKERRQ(ierr); 93 // -- Physics 94 ierr = PetscOptionsScalar("-theta0", "Reference potential temperature", 95 NULL, theta0, &theta0, NULL); CHKERRQ(ierr); 96 ierr = PetscOptionsScalar("-thetaC", "Perturbation of potential temperature", 97 NULL, thetaC, &thetaC, NULL); CHKERRQ(ierr); 98 ierr = PetscOptionsScalar("-P0", "Atmospheric pressure", 99 NULL, P0, &P0, NULL); CHKERRQ(ierr); 100 ierr = PetscOptionsScalar("-N", "Brunt-Vaisala frequency", 101 NULL, N, &N, NULL); CHKERRQ(ierr); 102 ierr = PetscOptionsScalar("-cv", "Heat capacity at constant volume", 103 NULL, cv, &cv, NULL); CHKERRQ(ierr); 104 ierr = PetscOptionsScalar("-cp", "Heat capacity at constant pressure", 105 NULL, cp, &cp, NULL); CHKERRQ(ierr); 106 ierr = PetscOptionsScalar("-g", "Gravitational acceleration", 107 NULL, g, &g, NULL); CHKERRQ(ierr); 108 ierr = PetscOptionsScalar("-lambda", 109 "Stokes hypothesis second viscosity coefficient", 110 NULL, lambda, &lambda, NULL); CHKERRQ(ierr); 111 ierr = PetscOptionsScalar("-mu", "Shear dynamic viscosity coefficient", 112 NULL, mu, &mu, NULL); CHKERRQ(ierr); 113 ierr = PetscOptionsScalar("-k", "Thermal conductivity", 114 NULL, k, &k, NULL); CHKERRQ(ierr); 115 ierr = PetscOptionsScalar("-lx", "Length scale in x direction", 116 NULL, lx, &lx, NULL); CHKERRQ(ierr); 117 ierr = PetscOptionsScalar("-ly", "Length scale in y direction", 118 NULL, ly, &ly, NULL); CHKERRQ(ierr); 119 ierr = PetscOptionsScalar("-lz", "Length scale in z direction", 120 NULL, lz, &lz, NULL); CHKERRQ(ierr); 121 ierr = PetscOptionsScalar("-rc", "Characteristic radius of thermal bubble", 122 NULL, rc, &rc, NULL); CHKERRQ(ierr); 123 PetscInt n = problem->dim; 124 center[0] = 0.5 * lx; 125 center[1] = 0.5 * ly; 126 center[2] = 0.5 * lz; 127 ierr = PetscOptionsRealArray("-center", "Location of bubble center", 128 NULL, center, &n, NULL); CHKERRQ(ierr); 129 n = problem->dim; 130 ierr = PetscOptionsRealArray("-dc_axis", 131 "Axis of density current cylindrical anomaly, or {0,0,0} for spherically symmetric", 132 NULL, dc_axis, &n, NULL); CHKERRQ(ierr); 133 { 134 PetscReal norm = PetscSqrtReal(PetscSqr(dc_axis[0]) + PetscSqr(dc_axis[1]) + 135 PetscSqr(dc_axis[2])); 136 if (norm > 0) { 137 for (int i=0; i<3; i++) dc_axis[i] /= norm; 138 } 139 } 140 ierr = PetscOptionsEnum("-stab", "Stabilization method", NULL, 141 StabilizationTypes, (PetscEnum)(stab = STAB_NONE), 142 (PetscEnum *)&stab, NULL); CHKERRQ(ierr); 143 144 ierr = PetscOptionsBool("-implicit", "Use implicit (IFunction) formulation", 145 NULL, implicit=PETSC_FALSE, &implicit, NULL); 146 CHKERRQ(ierr); 147 148 // -- Units 149 ierr = PetscOptionsScalar("-units_meter", "1 meter in scaled length units", 150 NULL, meter, &meter, NULL); CHKERRQ(ierr); 151 meter = fabs(meter); 152 ierr = PetscOptionsScalar("-units_kilogram","1 kilogram in scaled mass units", 153 NULL, kilogram, &kilogram, NULL); CHKERRQ(ierr); 154 kilogram = fabs(kilogram); 155 ierr = PetscOptionsScalar("-units_second","1 second in scaled time units", 156 NULL, second, &second, NULL); CHKERRQ(ierr); 157 second = fabs(second); 158 ierr = PetscOptionsScalar("-units_Kelvin", 159 "1 Kelvin in scaled temperature units", 160 NULL, Kelvin, &Kelvin, NULL); CHKERRQ(ierr); 161 Kelvin = fabs(Kelvin); 162 163 // -- Warnings 164 if (stab == STAB_SUPG && !implicit) { 165 ierr = PetscPrintf(comm, 166 "Warning! Use -stab supg only with -implicit\n"); 167 CHKERRQ(ierr); 168 } 169 170 ierr = PetscOptionsEnd(); CHKERRQ(ierr); 171 172 // ------------------------------------------------------ 173 // Set up the PETSc context 174 // ------------------------------------------------------ 175 // -- Define derived units 176 Pascal = kilogram / (meter * PetscSqr(second)); 177 J_per_kg_K = PetscSqr(meter) / (PetscSqr(second) * Kelvin); 178 m_per_squared_s = meter / PetscSqr(second); 179 W_per_m_K = kilogram * meter / (pow(second,3) * Kelvin); 180 181 user->units->meter = meter; 182 user->units->kilogram = kilogram; 183 user->units->second = second; 184 user->units->Kelvin = Kelvin; 185 user->units->Pascal = Pascal; 186 user->units->J_per_kg_K = J_per_kg_K; 187 user->units->m_per_squared_s = m_per_squared_s; 188 user->units->W_per_m_K = W_per_m_K; 189 190 // ------------------------------------------------------ 191 // Set up the libCEED context 192 // ------------------------------------------------------ 193 // -- Scale variables to desired units 194 theta0 *= Kelvin; 195 thetaC *= Kelvin; 196 P0 *= Pascal; 197 N *= (1./second); 198 cv *= J_per_kg_K; 199 cp *= J_per_kg_K; 200 Rd = cp - cv; 201 g *= m_per_squared_s; 202 mu *= Pascal * second; 203 k *= W_per_m_K; 204 lx = fabs(lx) * meter; 205 ly = fabs(ly) * meter; 206 lz = fabs(lz) * meter; 207 rc = fabs(rc) * meter; 208 for (int i=0; i<3; i++) center[i] *= meter; 209 210 // -- Setup Context 211 setup_context->theta0 = theta0; 212 setup_context->thetaC = thetaC; 213 setup_context->P0 = P0; 214 setup_context->N = N; 215 setup_context->cv = cv; 216 setup_context->cp = cp; 217 setup_context->Rd = Rd; 218 setup_context->g = g; 219 setup_context->rc = rc; 220 setup_context->lx = lx; 221 setup_context->ly = ly; 222 setup_context->lz = lz; 223 setup_context->center[0] = center[0]; 224 setup_context->center[1] = center[1]; 225 setup_context->center[2] = center[2]; 226 setup_context->dc_axis[0] = dc_axis[0]; 227 setup_context->dc_axis[1] = dc_axis[1]; 228 setup_context->dc_axis[2] = dc_axis[2]; 229 setup_context->time = 0; 230 231 // -- QFunction Context 232 user->phys->stab = stab; 233 user->phys->implicit = implicit; 234 user->phys->has_curr_time = has_curr_time; 235 user->phys->dc_ctx->lambda = lambda; 236 user->phys->dc_ctx->mu = mu; 237 user->phys->dc_ctx->k = k; 238 user->phys->dc_ctx->cv = cv; 239 user->phys->dc_ctx->cp = cp; 240 user->phys->dc_ctx->g = g; 241 user->phys->dc_ctx->Rd = Rd; 242 user->phys->dc_ctx->stabilization = stab; 243 244 PetscFunctionReturn(0); 245 } 246 247 PetscErrorCode BC_DENSITY_CURRENT(DM dm, SimpleBC bc, Physics phys, 248 void *setup_ctx) { 249 250 PetscInt len; 251 PetscBool flg; 252 MPI_Comm comm = PETSC_COMM_WORLD; 253 PetscErrorCode ierr; 254 PetscFunctionBeginUser; 255 256 // Default boundary conditions 257 // slip bc on all faces and no wall bc 258 bc->num_slip[0] = bc->num_slip[1] = bc->num_slip[2] = 2; 259 bc->slips[0][0] = 5; 260 bc->slips[0][1] = 6; 261 bc->slips[1][0] = 3; 262 bc->slips[1][1] = 4; 263 bc->slips[2][0] = 1; 264 bc->slips[2][1] = 2; 265 266 // Parse command line options 267 ierr = PetscOptionsBegin(comm, NULL, "Options for DENSITY_CURRENT BCs ", 268 NULL); CHKERRQ(ierr); 269 ierr = PetscOptionsIntArray("-bc_wall", 270 "Use wall boundary conditions on this list of faces", 271 NULL, bc->walls, 272 (len = sizeof(bc->walls) / sizeof(bc->walls[0]), 273 &len), &flg); CHKERRQ(ierr); 274 if (flg) { 275 bc->num_wall = len; 276 // Using a no-slip wall disables automatic slip walls (they must be set explicitly) 277 bc->num_slip[0] = bc->num_slip[1] = bc->num_slip[2] = 0; 278 } 279 for (PetscInt j=0; j<3; j++) { 280 const char *flags[3] = {"-bc_slip_x", "-bc_slip_y", "-bc_slip_z"}; 281 ierr = PetscOptionsIntArray(flags[j], 282 "Use slip boundary conditions on this list of faces", 283 NULL, bc->slips[j], 284 (len = sizeof(bc->slips[j]) / sizeof(bc->slips[j][0]), 285 &len), &flg); CHKERRQ(ierr); 286 if (flg) { 287 bc->num_slip[j] = len; 288 bc->user_bc = PETSC_TRUE; 289 } 290 } 291 ierr = PetscOptionsEnd(); CHKERRQ(ierr); 292 293 { 294 // Set slip boundary conditions 295 DMLabel label; 296 ierr = DMGetLabel(dm, "Face Sets", &label); CHKERRQ(ierr); 297 PetscInt comps[1] = {1}; 298 ierr = DMAddBoundary(dm, DM_BC_ESSENTIAL, "slipx", label, "Face Sets", 299 bc->num_slip[0], bc->slips[0], 0, 1, comps, 300 (void(*)(void))NULL, NULL, setup_ctx, NULL); 301 CHKERRQ(ierr); 302 comps[0] = 2; 303 ierr = DMAddBoundary(dm, DM_BC_ESSENTIAL, "slipy", label, "Face Sets", 304 bc->num_slip[1], bc->slips[1], 0, 1, comps, 305 (void(*)(void))NULL, NULL, setup_ctx, NULL); 306 CHKERRQ(ierr); 307 comps[0] = 3; 308 ierr = DMAddBoundary(dm, DM_BC_ESSENTIAL, "slipz", label, "Face Sets", 309 bc->num_slip[2], bc->slips[2], 0, 1, comps, 310 (void(*)(void))NULL, NULL, setup_ctx, NULL); 311 CHKERRQ(ierr); 312 } 313 314 if (bc->user_bc == PETSC_TRUE) { 315 for (PetscInt c = 0; c < 3; c++) { 316 for (PetscInt s = 0; s < bc->num_slip[c]; s++) { 317 for (PetscInt w = 0; w < bc->num_wall; w++) { 318 if (bc->slips[c][s] == bc->walls[w]) 319 SETERRQ1(PETSC_COMM_SELF, PETSC_ERR_ARG_WRONG, 320 "Boundary condition already set on face %D!\n", 321 bc->walls[w]); 322 } 323 } 324 } 325 } 326 327 // Set wall boundary conditions 328 // zero velocity and zero flux for mass density and energy density 329 { 330 DMLabel label; 331 PetscInt comps[3] = {1, 2, 3}; 332 ierr = DMGetLabel(dm, "Face Sets", &label); CHKERRQ(ierr); 333 ierr = DMAddBoundary(dm, DM_BC_ESSENTIAL, "wall", label, "Face Sets", 334 bc->num_wall, bc->walls, 0, 335 3, comps, (void(*)(void))Exact_DC, NULL, 336 setup_ctx, NULL); CHKERRQ(ierr); 337 } 338 339 PetscFunctionReturn(0); 340 } 341 342 PetscErrorCode PRINT_DENSITY_CURRENT(Physics phys, SetupContext setup_ctx, 343 AppCtx app_ctx) { 344 MPI_Comm comm = PETSC_COMM_WORLD; 345 PetscErrorCode ierr; 346 PetscFunctionBeginUser; 347 348 ierr = PetscPrintf(comm, 349 " Problem:\n" 350 " Problem Name : %s\n" 351 " Stabilization : %s\n", 352 app_ctx->problem_name, StabilizationTypes[phys->stab]); 353 CHKERRQ(ierr); 354 355 PetscFunctionReturn(0); 356 } 357