xref: /libCEED/examples/fluids/navierstokes.c (revision f179a3328604d643d4b2fd6d7256d83a63ecfb4c)
1 // Copyright (c) 2017-2022, 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 
8 //                        libCEED + PETSc Example: Navier-Stokes
9 //
10 // This example demonstrates a simple usage of libCEED with PETSc to solve a Navier-Stokes problem.
11 //
12 // Build with:
13 //
14 //     make [PETSC_DIR=</path/to/petsc>] [CEED_DIR=</path/to/libceed>] navierstokes
15 //
16 // Sample runs:
17 //
18 //     ./navierstokes -ceed /cpu/self -problem density_current -degree 1
19 //     ./navierstokes -ceed /gpu/cuda -problem advection -degree 1
20 //
21 //TESTARGS(name="blasius") -ceed {ceed_resource} -test -options_file examples/fluids/tests-output/blasius_test.yaml -compare_final_state_atol 2E-11 -compare_final_state_filename examples/fluids/tests-output/fluids-navierstokes-blasius.bin
22 //TESTARGS(name="blasius_STG") -ceed {ceed_resource} -test -options_file examples/fluids/tests-output/blasius_stgtest.yaml -compare_final_state_atol 2E-11 -compare_final_state_filename examples/fluids/tests-output/fluids-navierstokes-blasius_STG.bin
23 //TESTARGS(name="blasius_STG_weakT") -ceed {ceed_resource} -test -options_file examples/fluids/tests-output/blasius_stgtest.yaml -compare_final_state_atol 1E-11 -compare_final_state_filename examples/fluids/tests-output/fluids-navierstokes-blasius_STG_weakT.bin -weakT
24 //TESTARGS(name="blasius_STG_strongBC") -ceed {ceed_resource} -test -options_file examples/fluids/tests-output/blasius_stgtest.yaml -compare_final_state_atol 1E-10 -compare_final_state_filename examples/fluids/tests-output/fluids-navierstokes-blasius_STG_strongBC.bin -stg_strong true
25 //TESTARGS(name="channel") -ceed {ceed_resource} -test -options_file examples/fluids/channel.yaml -compare_final_state_atol 2e-11 -compare_final_state_filename examples/fluids/tests-output/fluids-navierstokes-channel.bin -dm_plex_box_faces 5,5,1 -ts_max_steps 5
26 //TESTARGS(name="channel-primitive") -ceed {ceed_resource} -test -options_file examples/fluids/channel.yaml -compare_final_state_atol 2e-11 -compare_final_state_filename examples/fluids/tests-output/fluids-navierstokes-channel-prim.bin -dm_plex_box_faces 5,5,1 -ts_max_steps 5 -state_var primitive
27 //TESTARGS(name="dc_explicit") -ceed {ceed_resource} -test -degree 3 -q_extra 2 -dm_plex_box_faces 1,1,2 -dm_plex_box_lower 0,0,0 -dm_plex_box_upper 125,125,250 -dm_plex_dim 3 -bc_slip_x 5,6 -bc_slip_y 3,4 -bc_Slip_z 1,2 -units_kilogram 1e-9 -center 62.5,62.5,187.5 -rc 100. -thetaC -35. -mu 75 -ts_dt 1e-3 -units_meter 1e-2 -units_second 1e-2 -compare_final_state_atol 1E-11 -compare_final_state_filename examples/fluids/tests-output/fluids-navierstokes-dc-explicit.bin
28 //TESTARGS(name="dc_implicit_stab_none") -ceed {ceed_resource} -test -degree 3 -dm_plex_box_faces 1,1,2 -dm_plex_box_lower 0,0,0 -dm_plex_box_upper 125,125,250 -dm_plex_dim 3 -bc_slip_x 5,6 -bc_slip_y 3,4 -bc_Slip_z 1,2 -units_kilogram 1e-9 -center 62.5,62.5,187.5 -rc 100. -thetaC -35. -mu 75 -units_meter 1e-2 -units_second 1e-2 -ksp_atol 1e-4 -ksp_rtol 1e-3 -ksp_type bcgs -snes_atol 1e-3 -snes_lag_jacobian 100 -snes_lag_jacobian_persists -snes_mf_operator -ts_dt 1e-3 -implicit -ts_type alpha -compare_final_state_atol 5E-4 -compare_final_state_filename examples/fluids/tests-output/fluids-navierstokes-dc-implicit-stab-none.bin
29 //TESTARGS(name="adv_rotation_implicit_stab_supg") -ceed {ceed_resource} -test -problem advection -CtauS .3 -stab supg -degree 3 -dm_plex_box_faces 1,1,2 -dm_plex_box_lower 0,0,0 -dm_plex_box_upper 125,125,250 -dm_plex_dim 3 -bc_wall 1,2,3,4,5,6 -wall_comps 4 -units_kilogram 1e-9 -rc 100. -ksp_atol 1e-4 -ksp_rtol 1e-3 -ksp_type bcgs -snes_atol 1e-3 -snes_lag_jacobian 100 -snes_lag_jacobian_persists -snes_mf_operator -ts_dt 1e-3 -implicit -dm_mat_preallocate_skip 0 -ts_type alpha -compare_final_state_atol 5E-4 -compare_final_state_filename examples/fluids/tests-output/fluids-navierstokes-adv-rotation-implicit-stab-supg.bin
30 //TESTARGS(name="adv_translation_implicit_stab_su") -ceed {ceed_resource} -test -problem advection -CtauS .3 -stab su -degree 3 -dm_plex_box_faces 1,1,2 -dm_plex_box_lower 0,0,0 -dm_plex_box_upper 125,125,250 -dm_plex_dim 3 -units_kilogram 1e-9 -rc 100. -ksp_atol 1e-4 -ksp_rtol 1e-3 -ksp_type bcgs -snes_atol 1e-3 -snes_lag_jacobian 100 -snes_lag_jacobian_persists -snes_mf_operator -ts_dt 1e-3 -implicit -dm_mat_preallocate_skip 0 -ts_type alpha -wind_type translation -wind_translation .53,-1.33,-2.65 -bc_inflow 1,2,3,4,5,6 -compare_final_state_atol 5E-4 -compare_final_state_filename examples/fluids/tests-output/fluids-navierstokes-adv-translation-implicit-stab-su.bin
31 //TESTARGS(name="adv2d_rotation_explicit_strong") -ceed {ceed_resource} -test -problem advection2d -strong_form 1 -degree 3 -dm_plex_box_faces 2,2 -dm_plex_box_lower 0,0 -dm_plex_box_upper 125,125 -bc_wall 1,2,3,4 -wall_comps 4 -units_kilogram 1e-9 -rc 100. -ts_dt 1e-3 -compare_final_state_atol 1E-11 -compare_final_state_filename examples/fluids/tests-output/fluids-navierstokes-adv2d-rotation-explicit-strong.bin
32 //TESTARGS(name="adv2d_rotation_implicit_stab_supg") -ceed {ceed_resource} -test -problem advection2d -CtauS .3 -stab supg -degree 3 -dm_plex_box_faces 1,1,2 -dm_plex_box_lower 0,0 -dm_plex_box_upper 125,125 -bc_wall 1,2,3,4 -wall_comps 4 -units_kilogram 1e-9 -rc 100. -ksp_atol 1e-4 -ksp_rtol 1e-3 -ksp_type bcgs -snes_atol 1e-3 -snes_lag_jacobian 100 -snes_lag_jacobian_persists -snes_mf_operator -ts_dt 1e-3 -implicit -dm_mat_preallocate_skip 0 -ts_type alpha -compare_final_state_atol 5E-4 -compare_final_state_filename examples/fluids/tests-output/fluids-navierstokes-adv2d-rotation-implicit-stab-supg.bin
33 //TESTARGS(name="euler_implicit") -ceed {ceed_resource} -test -problem euler_vortex -degree 3 -dm_plex_box_faces 1,1,2 -dm_plex_box_lower 0,0,0 -dm_plex_box_upper 125,125,250 -dm_plex_dim 3 -units_meter 1e-4 -units_second 1e-4 -mean_velocity 1.4,-2.,0 -bc_inflow 4,6 -bc_outflow 3,5 -bc_slip_z 1,2 -vortex_strength 2 -ksp_atol 1e-4 -ksp_rtol 1e-3 -ksp_type bcgs -snes_atol 1e-3 -snes_lag_jacobian 100 -snes_lag_jacobian_persists -snes_mf_operator -ts_dt 1e-3 -implicit -dm_mat_preallocate_skip 0 -ts_type alpha -compare_final_state_atol 5E-4 -compare_final_state_filename examples/fluids/tests-output/fluids-navierstokes-euler-implicit.bin
34 //TESTARGS(name="euler_explicit") -ceed {ceed_resource} -test -problem euler_vortex -degree 3 -q_extra 2 -dm_plex_box_faces 2,2,1 -dm_plex_box_lower 0,0,0 -dm_plex_box_upper 125,125,250 -dm_plex_dim 3 -units_meter 1e-4 -units_second 1e-4 -mean_velocity 1.4,-2.,0 -bc_inflow 4,6 -bc_outflow 3,5 -bc_slip_z 1,2 -vortex_strength 2 -ts_dt 1e-7 -ts_rk_type 5bs -ts_rtol 1e-10 -ts_atol 1e-10 -compare_final_state_atol 1E-7 -compare_final_state_filename examples/fluids/tests-output/fluids-navierstokes-euler-explicit.bin
35 //TESTARGS(name="shocktube_explicit_su_yzb") -ceed {ceed_resource} -test -problem shocktube -degree 1 -q_extra 2 -dm_plex_box_faces 50,1,1 -units_meter 1e-2 units_second 1e-2 -dm_plex_box_lower 0,0,0 -dm_plex_box_upper 1000,20,20 -dm_plex_dim 3 -bc_slip_x 5,6 -bc_slip_y 3,4 -bc_Slip_z 1,2 -yzb -stab su -compare_final_state_atol 1E-11 -compare_final_state_filename examples/fluids/tests-output/fluids-navierstokes-shocktube-explicit-su-yzb.bin
36 
37 /// @file
38 /// Navier-Stokes example using PETSc
39 
40 const char help[] = "Solve Navier-Stokes using PETSc and libCEED\n";
41 
42 #include "navierstokes.h"
43 
44 int main(int argc, char **argv) {
45   // ---------------------------------------------------------------------------
46   // Initialize PETSc
47   // ---------------------------------------------------------------------------
48   PetscCall(PetscInitialize(&argc, &argv, NULL, help));
49 
50   // ---------------------------------------------------------------------------
51   // Create structs
52   // ---------------------------------------------------------------------------
53   AppCtx app_ctx;
54   PetscCall(PetscCalloc1(1, &app_ctx));
55 
56   ProblemData *problem = NULL;
57   PetscCall(PetscCalloc1(1, &problem));
58 
59   User user;
60   PetscCall(PetscCalloc1(1, &user));
61 
62   CeedData ceed_data;
63   PetscCall(PetscCalloc1(1, &ceed_data));
64 
65   SimpleBC bc;
66   PetscCall(PetscCalloc1(1, &bc));
67 
68   Physics phys_ctx;
69   PetscCall(PetscCalloc1(1, &phys_ctx));
70 
71   Units units;
72   PetscCall(PetscCalloc1(1, &units));
73 
74   user->app_ctx        = app_ctx;
75   user->units          = units;
76   user->phys           = phys_ctx;
77   problem->bc_from_ics = PETSC_TRUE;
78 
79   // ---------------------------------------------------------------------------
80   // Process command line options
81   // ---------------------------------------------------------------------------
82   // -- Register problems to be available on the command line
83   PetscCall(RegisterProblems_NS(app_ctx));
84 
85   // -- Process general command line options
86   MPI_Comm comm = PETSC_COMM_WORLD;
87   user->comm    = comm;
88   PetscCall(ProcessCommandLineOptions(comm, app_ctx, bc));
89 
90   // ---------------------------------------------------------------------------
91   // Initialize libCEED
92   // ---------------------------------------------------------------------------
93   // -- Initialize backend
94   Ceed ceed;
95   CeedInit(app_ctx->ceed_resource, &ceed);
96   user->ceed = ceed;
97 
98   // -- Check preferred MemType
99   CeedMemType mem_type_backend;
100   CeedGetPreferredMemType(ceed, &mem_type_backend);
101 
102   // ---------------------------------------------------------------------------
103   // Set up global mesh
104   // ---------------------------------------------------------------------------
105   // -- Create DM
106   DM      dm;
107   VecType vec_type = NULL;
108   MatType mat_type = NULL;
109   switch (mem_type_backend) {
110     case CEED_MEM_HOST:
111       vec_type = VECSTANDARD;
112       break;
113     case CEED_MEM_DEVICE: {
114       const char *resolved;
115       CeedGetResource(ceed, &resolved);
116       if (strstr(resolved, "/gpu/cuda")) vec_type = VECCUDA;
117       else if (strstr(resolved, "/gpu/hip")) vec_type = VECKOKKOS;
118       else vec_type = VECSTANDARD;
119     }
120   }
121   if (strstr(vec_type, VECCUDA)) mat_type = MATAIJCUSPARSE;
122   else if (strstr(vec_type, VECKOKKOS)) mat_type = MATAIJKOKKOS;
123   else mat_type = MATAIJ;
124   PetscCall(CreateDM(comm, problem, mat_type, vec_type, &dm));
125   user->dm = dm;
126   PetscCall(DMSetApplicationContext(dm, user));
127 
128   // ---------------------------------------------------------------------------
129   // Choose the problem from the list of registered problems
130   // ---------------------------------------------------------------------------
131   {
132     PetscErrorCode (*p)(ProblemData *, DM, void *, SimpleBC);
133     PetscCall(PetscFunctionListFind(app_ctx->problems, app_ctx->problem_name, &p));
134     if (!p) SETERRQ(PETSC_COMM_SELF, 1, "Problem '%s' not found", app_ctx->problem_name);
135     PetscCall((*p)(problem, dm, &user, bc));
136   }
137 
138   // -- Set up DM
139   PetscCall(SetUpDM(dm, problem, app_ctx->degree, bc, phys_ctx));
140   PetscCall(CreateStatsDM(user, problem, app_ctx->degree, bc));
141 
142   // -- Refine DM for high-order viz
143   if (app_ctx->viz_refine) {
144     PetscCall(VizRefineDM(dm, user, problem, bc, phys_ctx));
145   }
146 
147   // ---------------------------------------------------------------------------
148   // Set up libCEED
149   // ---------------------------------------------------------------------------
150   // -- Set up libCEED objects
151   PetscCall(SetupLibceed(ceed, ceed_data, dm, user, app_ctx, problem, bc));
152 
153   PetscCall(SetupStatsCollection(ceed, user, ceed_data, problem));
154 
155   // ---------------------------------------------------------------------------
156   // Set up ICs
157   // ---------------------------------------------------------------------------
158   // -- Set up global state vector Q
159   Vec Q;
160   PetscCall(DMCreateGlobalVector(dm, &Q));
161   PetscCall(VecZeroEntries(Q));
162 
163   // -- Set up local state vectors Q_loc, Q_dot_loc
164   PetscCall(DMCreateLocalVector(dm, &user->Q_loc));
165   PetscCall(DMCreateLocalVector(dm, &user->Q_dot_loc));
166   PetscCall(VecZeroEntries(user->Q_dot_loc));
167 
168   // -- Fix multiplicity for ICs
169   PetscCall(ICs_FixMultiplicity(dm, ceed_data, user, user->Q_loc, Q, 0.0));
170 
171   // ---------------------------------------------------------------------------
172   // Set up lumped mass matrix
173   // ---------------------------------------------------------------------------
174   // -- Set up global mass vector
175   PetscCall(VecDuplicate(Q, &user->M));
176 
177   // -- Compute lumped mass matrix
178   PetscCall(ComputeLumpedMassMatrix(ceed, dm, ceed_data, user->M));
179 
180   // ---------------------------------------------------------------------------
181   // Record boundary values from initial condition
182   // ---------------------------------------------------------------------------
183   // -- This overrides DMPlexInsertBoundaryValues().
184   //    We use this for the main simulation DM because the reference DMPlexInsertBoundaryValues() is very slow on the GPU due to extra device-to-host
185   //    communication. If we disable this, we should still get the same results due to the problem->bc function, but with potentially much slower
186   //    execution.
187   if (problem->bc_from_ics) {
188     PetscCall(SetBCsFromICs_NS(dm, Q, user->Q_loc));
189   }
190 
191   // ---------------------------------------------------------------------------
192   // Create output directory
193   // ---------------------------------------------------------------------------
194   PetscMPIInt rank;
195   MPI_Comm_rank(comm, &rank);
196   if (!rank) {
197     PetscCall(PetscMkdir(app_ctx->output_dir));
198   }
199 
200   // ---------------------------------------------------------------------------
201   // Gather initial Q values in case of continuation of simulation
202   // ---------------------------------------------------------------------------
203   // -- Set up initial values from binary file
204   if (app_ctx->cont_steps) {
205     PetscCall(SetupICsFromBinary(comm, app_ctx, Q));
206   }
207 
208   // ---------------------------------------------------------------------------
209   // Print problem summary
210   // ---------------------------------------------------------------------------
211   if (!app_ctx->test_mode) {
212     // Header and rank
213     char host_name[PETSC_MAX_PATH_LEN];
214     int  comm_size;
215     PetscCall(PetscGetHostName(host_name, sizeof host_name));
216     PetscCall(MPI_Comm_size(comm, &comm_size));
217     PetscCall(PetscPrintf(comm,
218                           "\n-- Navier-Stokes solver - libCEED + PETSc --\n"
219                           "  MPI:\n"
220                           "    Host Name                          : %s\n"
221                           "    Total ranks                        : %d\n",
222                           host_name, comm_size));
223 
224     // Problem specific info
225     PetscCall(problem->print_info(problem, app_ctx));
226 
227     // libCEED
228     const char *used_resource;
229     CeedGetResource(ceed, &used_resource);
230     PetscCall(PetscPrintf(comm,
231                           "  libCEED:\n"
232                           "    libCEED Backend                    : %s\n"
233                           "    libCEED Backend MemType            : %s\n",
234                           used_resource, CeedMemTypes[mem_type_backend]));
235     // PETSc
236     char box_faces_str[PETSC_MAX_PATH_LEN] = "3,3,3";
237     if (problem->dim == 2) box_faces_str[3] = '\0';
238     PetscCall(PetscOptionsGetString(NULL, NULL, "-dm_plex_box_faces", box_faces_str, sizeof(box_faces_str), NULL));
239     MatType mat_type;
240     VecType vec_type;
241     PetscCall(DMGetMatType(dm, &mat_type));
242     PetscCall(DMGetVecType(dm, &vec_type));
243     PetscCall(PetscPrintf(comm,
244                           "  PETSc:\n"
245                           "    Box Faces                          : %s\n"
246                           "    DM MatType                         : %s\n"
247                           "    DM VecType                         : %s\n"
248                           "    Time Stepping Scheme               : %s\n",
249                           box_faces_str, mat_type, vec_type, phys_ctx->implicit ? "implicit" : "explicit"));
250     if (app_ctx->cont_steps) {
251       PetscCall(PetscPrintf(comm,
252                             "  Continue:\n"
253                             "    Filename:                          : %s\n"
254                             "    Step:                              : %" PetscInt_FMT "\n"
255                             "    Time:                              : %g\n",
256                             app_ctx->cont_file, app_ctx->cont_steps, app_ctx->cont_time));
257     }
258     // Mesh
259     const PetscInt num_comp_q = 5;
260     CeedInt        glob_dofs, owned_dofs;
261     PetscInt       glob_nodes, local_nodes;
262     const CeedInt  num_P = app_ctx->degree + 1, num_Q = num_P + app_ctx->q_extra;
263     // -- Get global size
264     PetscCall(VecGetSize(Q, &glob_dofs));
265     PetscCall(VecGetLocalSize(Q, &owned_dofs));
266     glob_nodes = glob_dofs / num_comp_q;
267     // -- Get local size
268     PetscCall(VecGetSize(user->Q_loc, &local_nodes));
269     local_nodes /= num_comp_q;
270     PetscCall(PetscPrintf(comm,
271                           "  Mesh:\n"
272                           "    Number of 1D Basis Nodes (P)       : %" CeedInt_FMT "\n"
273                           "    Number of 1D Quadrature Points (Q) : %" CeedInt_FMT "\n"
274                           "    Global DoFs                        : %" PetscInt_FMT "\n"
275                           "    Owned DoFs                         : %" PetscInt_FMT "\n"
276                           "    DoFs per node                      : %" PetscInt_FMT "\n"
277                           "    Global nodes (DoFs / %" PetscInt_FMT ")            : %" PetscInt_FMT "\n"
278                           "    Local nodes                        : %" PetscInt_FMT "\n",
279                           num_P, num_Q, glob_dofs, owned_dofs, num_comp_q, num_comp_q, glob_nodes, local_nodes));
280   }
281   // -- Zero Q_loc
282   PetscCall(VecZeroEntries(user->Q_loc));
283 
284   // ---------------------------------------------------------------------------
285   // TS: Create, setup, and solve
286   // ---------------------------------------------------------------------------
287   TS          ts;
288   PetscScalar final_time;
289   PetscCall(TSSolve_NS(dm, user, app_ctx, phys_ctx, &Q, &final_time, &ts));
290 
291   // ---------------------------------------------------------------------------
292   // Post-processing
293   // ---------------------------------------------------------------------------
294   PetscCall(PostProcess_NS(ts, ceed_data, dm, problem, user, Q, final_time));
295 
296   // ---------------------------------------------------------------------------
297   // Destroy libCEED objects
298   // ---------------------------------------------------------------------------
299   // -- Vectors
300   CeedVectorDestroy(&ceed_data->x_coord);
301   CeedVectorDestroy(&ceed_data->q_data);
302   CeedVectorDestroy(&user->q_ceed);
303   CeedVectorDestroy(&user->q_dot_ceed);
304   CeedVectorDestroy(&user->g_ceed);
305   CeedVectorDestroy(&user->coo_values_amat);
306   CeedVectorDestroy(&user->coo_values_pmat);
307 
308   // -- QFunctions
309   CeedQFunctionDestroy(&ceed_data->qf_setup_vol);
310   CeedQFunctionDestroy(&ceed_data->qf_ics);
311   CeedQFunctionDestroy(&ceed_data->qf_rhs_vol);
312   CeedQFunctionDestroy(&ceed_data->qf_ifunction_vol);
313   CeedQFunctionDestroy(&ceed_data->qf_setup_sur);
314   CeedQFunctionDestroy(&ceed_data->qf_apply_inflow);
315   CeedQFunctionDestroy(&ceed_data->qf_apply_inflow_jacobian);
316   CeedQFunctionDestroy(&ceed_data->qf_apply_freestream);
317   CeedQFunctionDestroy(&ceed_data->qf_apply_freestream_jacobian);
318 
319   // -- Bases
320   CeedBasisDestroy(&ceed_data->basis_q);
321   CeedBasisDestroy(&ceed_data->basis_x);
322   CeedBasisDestroy(&ceed_data->basis_xc);
323   CeedBasisDestroy(&ceed_data->basis_q_sur);
324   CeedBasisDestroy(&ceed_data->basis_x_sur);
325 
326   // -- Restrictions
327   CeedElemRestrictionDestroy(&ceed_data->elem_restr_q);
328   CeedElemRestrictionDestroy(&ceed_data->elem_restr_x);
329   CeedElemRestrictionDestroy(&ceed_data->elem_restr_qd_i);
330 
331   // -- Operators
332   CeedOperatorDestroy(&ceed_data->op_setup_vol);
333   CeedOperatorDestroy(&ceed_data->op_ics);
334   CeedOperatorDestroy(&user->op_rhs_vol);
335   CeedOperatorDestroy(&user->op_ifunction_vol);
336   CeedOperatorDestroy(&user->op_rhs);
337   CeedOperatorDestroy(&user->op_ifunction);
338   CeedOperatorDestroy(&user->op_ijacobian);
339 
340   // -- Ceed
341   CeedDestroy(&ceed);
342 
343   // ---------------------------------------------------------------------------
344   // Clean up PETSc
345   // ---------------------------------------------------------------------------
346   // -- Vectors
347   PetscCall(VecDestroy(&Q));
348   PetscCall(VecDestroy(&user->M));
349   PetscCall(VecDestroy(&user->Q_loc));
350   PetscCall(VecDestroy(&user->Q_dot_loc));
351 
352   // -- Matrices
353   PetscCall(MatDestroy(&user->interp_viz));
354 
355   // -- DM
356   PetscCall(DMDestroy(&dm));
357   PetscCall(DMDestroy(&user->dm_viz));
358 
359   // -- TS
360   PetscCall(TSDestroy(&ts));
361 
362   // -- Function list
363   PetscCall(PetscFunctionListDestroy(&app_ctx->problems));
364 
365   PetscCall(PetscFree(app_ctx->amat_type));
366 
367   // -- Structs
368   PetscCall(PetscFree(units));
369   PetscCall(PetscFree(user));
370   PetscCall(PetscFree(problem));
371   PetscCall(PetscFree(bc));
372   PetscCall(PetscFree(phys_ctx));
373   PetscCall(PetscFree(app_ctx));
374   PetscCall(PetscFree(ceed_data));
375 
376   return PetscFinalize();
377 }
378