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thermal_steady.cpp File Reference
User modules » Thermal element

Example of steady thermal analysis. More...

#include <BasicFiniteElements.hpp>

Go to the source code of this file.

Functions

int main (int argc, char *argv[])
 

Variables

static char help [] = "...\n\n"
 

Detailed Description

Example of steady thermal analysis.

TODO:

Todo:
Make it work in distributed meshes with multigird solver. At the moment it is not working efficient as can.

Definition in file thermal_steady.cpp.

Function Documentation

◆ main()

int main ( int  argc,
char *  argv[] 
)

Definition at line 21 of file thermal_steady.cpp.

21  {
22 
23  const string default_options = "-ksp_type fgmres \n"
24  "-pc_type lu \n"
25  "-pc_factor_mat_solver_type mumps \n"
26  "-mat_mumps_icntl_20 0 \n"
27  "-ksp_monitor \n";
28 
29  string param_file = "param_file.petsc";
30  if (!static_cast<bool>(ifstream(param_file))) {
31  std::ofstream file(param_file.c_str(), std::ios::ate);
32  if (file.is_open()) {
33  file << default_options;
34  file.close();
35  }
36  }
37 
38  MoFEM::Core::Initialize(&argc, &argv, param_file.c_str(), help);
39 
40  try {
41 
42  moab::Core mb_instance;
43  moab::Interface &moab = mb_instance;
44  int rank;
45  MPI_Comm_rank(PETSC_COMM_WORLD, &rank);
46 
47  PetscBool flg = PETSC_TRUE;
48  char mesh_file_name[255];
49  CHKERR PetscOptionsGetString(PETSC_NULL, PETSC_NULL, "-my_file",
50  mesh_file_name, 255, &flg);
51  if (flg != PETSC_TRUE) {
52  SETERRQ(PETSC_COMM_SELF, MOFEM_NOT_FOUND,
53  "*** ERROR -my_file (MESH FILE NEEDED)");
54  }
55 
56  const char *option;
57  option = ""; //"PARALLEL=BCAST;";//;DEBUG_IO";
58  CHKERR moab.load_file(mesh_file_name, 0, option);
59 
60  // Create MoFEM (Joseph) database
61  MoFEM::Core core(moab);
62  MoFEM::Interface &m_field = core;
63 
64  // set entities bit level
65  BitRefLevel bit_level0;
66  bit_level0.set(0);
67  EntityHandle meshset_level0;
68  CHKERR moab.create_meshset(MESHSET_SET, meshset_level0);
69  CHKERR m_field.getInterface<BitRefManager>()->setBitRefLevelByDim(
70  0, 3, bit_level0);
71 
72  // Fields
73  CHKERR m_field.add_field("TEMP", H1, AINSWORTH_LEGENDRE_BASE, 1);
74 
75  // Problem
76  CHKERR m_field.add_problem("THERMAL_PROBLEM");
77 
78  // set refinement level for problem
79  CHKERR m_field.modify_problem_ref_level_add_bit("THERMAL_PROBLEM",
80  bit_level0);
81 
82  // meshset consisting all entities in mesh
83  EntityHandle root_set = moab.get_root_set();
84  // add entities to field
85  CHKERR m_field.add_ents_to_field_by_type(root_set, MBTET, "TEMP");
86 
87  // set app. order
88  // see Hierarchic Finite Element Bases on Unstructured Tetrahedral Meshes
89  // (Mark Ainsworth & Joe Coyle)
90  PetscInt order;
91  CHKERR PetscOptionsGetInt(PETSC_NULL, PETSC_NULL, "-my_order", &order,
92  &flg);
93  if (flg != PETSC_TRUE) {
94  order = 2;
95  }
96 
97  CHKERR m_field.set_field_order(root_set, MBTET, "TEMP", order);
98  CHKERR m_field.set_field_order(root_set, MBTRI, "TEMP", order);
99  CHKERR m_field.set_field_order(root_set, MBEDGE, "TEMP", order);
100  CHKERR m_field.set_field_order(root_set, MBVERTEX, "TEMP", 1);
101 
102  CHKERR m_field.add_field("MESH_NODE_POSITIONS", H1, AINSWORTH_LEGENDRE_BASE,
103  3);
104  CHKERR m_field.add_ents_to_field_by_type(root_set, MBTET,
105  "MESH_NODE_POSITIONS");
106  CHKERR m_field.set_field_order(0, MBTET, "MESH_NODE_POSITIONS", 2);
107  CHKERR m_field.set_field_order(0, MBTRI, "MESH_NODE_POSITIONS", 2);
108  CHKERR m_field.set_field_order(0, MBEDGE, "MESH_NODE_POSITIONS", 2);
109  CHKERR m_field.set_field_order(0, MBVERTEX, "MESH_NODE_POSITIONS", 1);
110 
111  ThermalElement thermal_elements(m_field);
112  CHKERR thermal_elements.addThermalElements("TEMP");
113  CHKERR thermal_elements.addThermalFluxElement("TEMP");
114  CHKERR thermal_elements.addThermalConvectionElement("TEMP");
115 
116  CHKERR m_field.modify_problem_add_finite_element("THERMAL_PROBLEM",
117  "THERMAL_FE");
118  CHKERR m_field.modify_problem_add_finite_element("THERMAL_PROBLEM",
119  "THERMAL_FLUX_FE");
120  CHKERR m_field.modify_problem_add_finite_element("THERMAL_PROBLEM",
121  "THERMAL_CONVECTION_FE");
122 
123  /****/
124  // build database
125  // build field
126  CHKERR m_field.build_fields();
127  // build finite elemnts
128  CHKERR m_field.build_finite_elements();
129  // build adjacencies
130  CHKERR m_field.build_adjacencies(bit_level0);
131 
132  ProblemsManager *prb_mng_ptr;
133  CHKERR m_field.getInterface(prb_mng_ptr);
134  // build problem
135  CHKERR prb_mng_ptr->buildProblem("THERMAL_PROBLEM", true);
136 
137  Projection10NodeCoordsOnField ent_method_material(m_field,
138  "MESH_NODE_POSITIONS");
139  CHKERR m_field.loop_dofs("MESH_NODE_POSITIONS", ent_method_material);
140 
141  /****/
142  // mesh partitioning
143  // partition
144  CHKERR prb_mng_ptr->partitionProblem("THERMAL_PROBLEM");
145  CHKERR prb_mng_ptr->partitionFiniteElements("THERMAL_PROBLEM");
146  // what are ghost nodes, see Petsc Manual
147  CHKERR prb_mng_ptr->partitionGhostDofs("THERMAL_PROBLEM");
148 
149  Vec F;
150  CHKERR m_field.getInterface<VecManager>()->vecCreateGhost("THERMAL_PROBLEM",
151  ROW, &F);
152  Vec T;
153  CHKERR VecDuplicate(F, &T);
154  Mat A;
155  CHKERR m_field.getInterface<MatrixManager>()
156  ->createMPIAIJWithArrays<PetscGlobalIdx_mi_tag>("THERMAL_PROBLEM", &A);
157 
158  DirichletTemperatureBc my_dirichlet_bc(m_field, "TEMP", A, T, F);
159 
160  CHKERR addHOOpsVol("MESH_NODE_POSITIONS", thermal_elements.getLoopFeRhs(),
161  true, false, false, false);
162  CHKERR addHOOpsVol("MESH_NODE_POSITIONS", thermal_elements.getLoopFeLhs(),
163  true, false, false, false);
164 
165  CHKERR thermal_elements.setThermalFiniteElementRhsOperators("TEMP", F);
166  CHKERR thermal_elements.setThermalFiniteElementLhsOperators("TEMP", A);
167  CHKERR thermal_elements.setThermalFluxFiniteElementRhsOperators("TEMP", F);
168  CHKERR thermal_elements.setThermalConvectionFiniteElementLhsOperators(
169  "TEMP", A);
170  CHKERR thermal_elements.setThermalConvectionFiniteElementRhsOperators(
171  "TEMP", F);
172 
173  CHKERR VecZeroEntries(T);
174  CHKERR VecGhostUpdateBegin(T, INSERT_VALUES, SCATTER_FORWARD);
175  CHKERR VecGhostUpdateEnd(T, INSERT_VALUES, SCATTER_FORWARD);
176  CHKERR VecZeroEntries(F);
177  CHKERR VecGhostUpdateBegin(F, INSERT_VALUES, SCATTER_FORWARD);
178  CHKERR VecGhostUpdateEnd(F, INSERT_VALUES, SCATTER_FORWARD);
179  CHKERR MatZeroEntries(A);
180 
181  // preproc
182  CHKERR m_field.problem_basic_method_preProcess("THERMAL_PROBLEM",
183  my_dirichlet_bc);
184  CHKERR m_field.getInterface<VecManager>()->setGlobalGhostVector(
185  "THERMAL_PROBLEM", ROW, T, INSERT_VALUES, SCATTER_REVERSE);
186 
187  CHKERR m_field.loop_finite_elements("THERMAL_PROBLEM", "THERMAL_FE",
188  thermal_elements.getLoopFeRhs());
189  CHKERR m_field.loop_finite_elements("THERMAL_PROBLEM", "THERMAL_FE",
190  thermal_elements.getLoopFeLhs());
191  CHKERR m_field.loop_finite_elements("THERMAL_PROBLEM", "THERMAL_FLUX_FE",
192  thermal_elements.getLoopFeFlux());
193  CHKERR m_field.loop_finite_elements(
194  "THERMAL_PROBLEM", "THERMAL_CONVECTION_FE",
195  thermal_elements.getLoopFeConvectionRhs());
196  CHKERR m_field.loop_finite_elements(
197  "THERMAL_PROBLEM", "THERMAL_CONVECTION_FE",
198  thermal_elements.getLoopFeConvectionLhs());
199 
200  // postproc
201  CHKERR m_field.problem_basic_method_postProcess("THERMAL_PROBLEM",
202  my_dirichlet_bc);
203 
204  CHKERR VecGhostUpdateBegin(F, ADD_VALUES, SCATTER_REVERSE);
205  CHKERR VecGhostUpdateEnd(F, ADD_VALUES, SCATTER_REVERSE);
206  CHKERR VecAssemblyBegin(F);
207  CHKERR VecAssemblyEnd(F);
208  CHKERR MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY);
209  CHKERR MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY);
210 
211  CHKERR VecScale(F, -1);
212 
213  // Solver
214  KSP solver;
215  CHKERR KSPCreate(PETSC_COMM_WORLD, &solver);
216  CHKERR KSPSetOperators(solver, A, A);
217  CHKERR KSPSetFromOptions(solver);
218  CHKERR KSPSetUp(solver);
219 
220  CHKERR KSPSolve(solver, F, T);
221  CHKERR VecGhostUpdateBegin(T, INSERT_VALUES, SCATTER_FORWARD);
222  CHKERR VecGhostUpdateEnd(T, INSERT_VALUES, SCATTER_FORWARD);
223 
224  CHKERR m_field.problem_basic_method_preProcess("THERMAL_PROBLEM",
225  my_dirichlet_bc);
226 
227  // Save data on mesh
228  CHKERR m_field.getInterface<VecManager>()->setGlobalGhostVector(
229  "THERMAL_PROBLEM", ROW, T, INSERT_VALUES, SCATTER_REVERSE);
230 
231  if (m_field.get_comm_rank() == 0) {
232  CHKERR moab.write_file("solution.h5m");
233  }
234 
235  ProjectionFieldOn10NodeTet ent_method_on_10nodeTet(m_field, "TEMP", true,
236  false, "TEMP");
237  CHKERR m_field.loop_dofs("TEMP", ent_method_on_10nodeTet);
238  ent_method_on_10nodeTet.setNodes = false;
239  CHKERR m_field.loop_dofs("TEMP", ent_method_on_10nodeTet);
240 
241  if (m_field.get_comm_rank() == 0) {
242  EntityHandle out_meshset;
243  CHKERR moab.create_meshset(MESHSET_SET, out_meshset);
244  CHKERR m_field.get_problem_finite_elements_entities(
245  "THERMAL_PROBLEM", "THERMAL_FE", out_meshset);
246  CHKERR moab.write_file("out.vtk", "VTK", "", &out_meshset, 1);
247  CHKERR moab.delete_entities(&out_meshset, 1);
248  }
249 
250  CHKERR MatDestroy(&A);
251  CHKERR VecDestroy(&F);
252  CHKERR VecDestroy(&T);
253  CHKERR KSPDestroy(&solver);
254  }
255  CATCH_ERRORS;
256 
257  return MoFEM::Core::Finalize();
258 }

Variable Documentation

◆ help

char help[] = "...\n\n"
static

Definition at line 19 of file thermal_steady.cpp.

MoFEM::UnknownInterface::getInterface
MoFEMErrorCode getInterface(IFACE *&iface) const
Get interface reference to pointer of interface.
Definition: UnknownInterface.hpp:93
MoFEM::CoreInterface::problem_basic_method_postProcess
virtual MoFEMErrorCode problem_basic_method_postProcess(const Problem *problem_ptr, BasicMethod &method, int verb=DEFAULT_VERBOSITY)=0
Set data for BasicMethod.
MoFEM::CoreInterface::loop_finite_elements
virtual MoFEMErrorCode loop_finite_elements(const std::string problem_name, const std::string &fe_name, FEMethod &method, boost::shared_ptr< NumeredEntFiniteElement_multiIndex > fe_ptr=nullptr, MoFEMTypes bh=MF_EXIST, CacheTupleWeakPtr cache_ptr=CacheTupleSharedPtr(), int verb=DEFAULT_VERBOSITY)=0
Make a loop over finite elements.
MoFEM::CoreInterface::loop_dofs
virtual MoFEMErrorCode loop_dofs(const Problem *problem_ptr, const std::string &field_name, RowColData rc, DofMethod &method, int lower_rank, int upper_rank, int verb=DEFAULT_VERBOSITY)=0
Make a loop over dofs.
MoFEM::ProblemsManager::buildProblem
MoFEMErrorCode buildProblem(const std::string name, const bool square_matrix, int verb=VERBOSE)
build problem data structures
Definition: ProblemsManager.cpp:87
MoFEM::CoreTmp< 0 >
Core (interface) class.
Definition: Core.hpp:82
H1
@ H1
continuous field
Definition: definitions.h:85
EntityHandle
MoFEM::ProblemsManager
Problem manager is used to build and partition problems.
Definition: ProblemsManager.hpp:21
MoFEM::addHOOpsVol
MoFEMErrorCode addHOOpsVol(const std::string field, E &e, bool h1, bool hcurl, bool hdiv, bool l2)
Definition: HODataOperators.hpp:674
DirichletTemperatureBc
Definition: DirichletBC.hpp:239
MoFEM::CoreInterface::get_comm_rank
virtual int get_comm_rank() const =0
MoFEM::CoreInterface::get_problem_finite_elements_entities
virtual MoFEMErrorCode get_problem_finite_elements_entities(const std::string name, const std::string &fe_name, const EntityHandle meshset)=0
add finite elements to the meshset
A
constexpr AssemblyType A
Definition: operators_tests.cpp:30
MoFEM::Projection10NodeCoordsOnField
Projection of edge entities with one mid-node on hierarchical basis.
Definition: Projection10NodeCoordsOnField.hpp:24
MoFEM::CoreTmp< 0 >::Finalize
static MoFEMErrorCode Finalize()
Checks for options to be called at the conclusion of the program.
Definition: Core.cpp:112
help
static char help[]
Definition: thermal_steady.cpp:19
MoFEM::CoreInterface::add_ents_to_field_by_type
virtual MoFEMErrorCode add_ents_to_field_by_type(const Range &ents, const EntityType type, const std::string &name, int verb=DEFAULT_VERBOSITY)=0
Add entities to field meshset.
order
constexpr int order
Definition: dg_projection.cpp:18
MoFEM::DeprecatedCoreInterface
Deprecated interface functions.
Definition: DeprecatedCoreInterface.hpp:16
ROW
@ ROW
Definition: definitions.h:136
MoFEM::Interface
DeprecatedCoreInterface Interface
Definition: Interface.hpp:2010
MoFEM::CoreInterface::problem_basic_method_preProcess
virtual MoFEMErrorCode problem_basic_method_preProcess(const Problem *problem_ptr, BasicMethod &method, int verb=DEFAULT_VERBOSITY)=0
Set data for BasicMethod.
CHKERR
#define CHKERR
Inline error check.
Definition: definitions.h:548
MoFEM::ProjectionFieldOn10NodeTet
Definition: Projection10NodeCoordsOnField.hpp:49
MoFEM::CoreInterface::build_finite_elements
virtual MoFEMErrorCode build_finite_elements(int verb=DEFAULT_VERBOSITY)=0
Build finite elements.
MoFEM::ProblemsManager::partitionFiniteElements
MoFEMErrorCode partitionFiniteElements(const std::string name, bool part_from_moab=false, int low_proc=-1, int hi_proc=-1, int verb=VERBOSE)
partition finite elements
Definition: ProblemsManager.cpp:2167
MOFEM_NOT_FOUND
@ MOFEM_NOT_FOUND
Definition: definitions.h:33
MoFEM::CoreInterface::modify_problem_ref_level_add_bit
virtual MoFEMErrorCode modify_problem_ref_level_add_bit(const std::string &name_problem, const BitRefLevel &bit)=0
add ref level to problem
MoFEM::VecManager
Vector manager is used to create vectors \mofem_vectors.
Definition: VecManager.hpp:23
mesh_file_name
char mesh_file_name[255]
Definition: mesh_smoothing.cpp:22
MoFEM::MatrixManager
Matrix manager is used to build and partition problems.
Definition: MatrixManager.hpp:21
ThermalElement
structure grouping operators and data used for thermal problems
Definition: ThermalElement.hpp:27
MoFEM::CoreTmp< 0 >::Initialize
static MoFEMErrorCode Initialize(int *argc, char ***args, const char file[], const char help[])
Initializes the MoFEM database PETSc, MOAB and MPI.
Definition: Core.cpp:72
CATCH_ERRORS
#define CATCH_ERRORS
Catch errors.
Definition: definitions.h:385
MoFEM::Core
CoreTmp< 0 > Core
Definition: Core.hpp:1148
AINSWORTH_LEGENDRE_BASE
@ AINSWORTH_LEGENDRE_BASE
Ainsworth Cole (Legendre) approx. base .
Definition: definitions.h:60
EigenMatrix::Vec
const FTensor::Tensor2< T, Dim, Dim > Vec
Definition: MatrixFunction.hpp:66
MoFEM::PetscOptionsGetString
PetscErrorCode PetscOptionsGetString(PetscOptions *, const char pre[], const char name[], char str[], size_t size, PetscBool *set)
Definition: DeprecatedPetsc.hpp:172
MoFEM::CoreInterface::build_fields
virtual MoFEMErrorCode build_fields(int verb=DEFAULT_VERBOSITY)=0
MoFEM::BitRefManager
Managing BitRefLevels.
Definition: BitRefManager.hpp:21
MoFEM::CoreInterface::modify_problem_add_finite_element
virtual MoFEMErrorCode modify_problem_add_finite_element(const std::string name_problem, const std::string &fe_name)=0
add finite element to problem, this add entities assigned to finite element to a particular problem
MoFEM::Types::BitRefLevel
std::bitset< BITREFLEVEL_SIZE > BitRefLevel
Bit structure attached to each entity identifying to what mesh entity is attached.
Definition: Types.hpp:40
MoFEM::CoreInterface::build_adjacencies
virtual MoFEMErrorCode build_adjacencies(const Range &ents, int verb=DEFAULT_VERBOSITY)=0
build adjacencies
MoFEM::CoreInterface::set_field_order
virtual MoFEMErrorCode set_field_order(const EntityHandle meshset, const EntityType type, const std::string &name, const ApproximationOrder order, int verb=DEFAULT_VERBOSITY)=0
Set order approximation of the entities in the field.
MoFEM::ProblemsManager::partitionGhostDofs
MoFEMErrorCode partitionGhostDofs(const std::string name, int verb=VERBOSE)
determine ghost nodes
Definition: ProblemsManager.cpp:2339
MoFEM::CoreInterface::add_problem
virtual MoFEMErrorCode add_problem(const std::string &name, enum MoFEMTypes bh=MF_EXCL, int verb=DEFAULT_VERBOSITY)=0
Add problem.
MoFEM::PetscOptionsGetInt
PetscErrorCode PetscOptionsGetInt(PetscOptions *, const char pre[], const char name[], PetscInt *ivalue, PetscBool *set)
Definition: DeprecatedPetsc.hpp:142
MoFEM::CoreInterface::add_field
virtual MoFEMErrorCode add_field(const std::string name, const FieldSpace space, const FieldApproximationBase base, const FieldCoefficientsNumber nb_of_coefficients, const TagType tag_type=MB_TAG_SPARSE, const enum MoFEMTypes bh=MF_EXCL, int verb=DEFAULT_VERBOSITY)=0
Add field.
MoFEM::ProblemsManager::partitionProblem
MoFEMErrorCode partitionProblem(const std::string name, int verb=VERBOSE)
partition problem dofs (collective)
Definition: ProblemsManager.cpp:1683
F
@ F
Definition: free_surface.cpp:394
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