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field_approximation.cpp File Reference
#include <BasicFiniteElements.hpp>

Go to the source code of this file.

Classes

struct  MyFunApprox
 Example approx. function. More...
 

Macros

#define HOON
 

Functions

int main (int argc, char *argv[])
 

Variables

static char help [] = "...\n\n"
 

Macro Definition Documentation

◆ HOON

#define HOON

Definition at line 9 of file field_approximation.cpp.

Function Documentation

◆ main()

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

Definition at line 28 of file field_approximation.cpp.

28 {
29
30 MoFEM::Core::Initialize(&argc, &argv, (char *)0, help);
31
32 try {
33
34 moab::Core mb_instance;
35 moab::Interface &moab = mb_instance;
36 int rank;
37 MPI_Comm_rank(PETSC_COMM_WORLD, &rank);
38
39 PetscBool flg = PETSC_TRUE;
40 char mesh_file_name[255];
41 CHKERR PetscOptionsGetString(PETSC_NULLPTR, PETSC_NULLPTR, "-my_file",
42 mesh_file_name, 255, &flg);
43 if (flg != PETSC_TRUE) {
44 SETERRQ(PETSC_COMM_SELF, MOFEM_INVALID_DATA,
45 "*** ERROR -my_file (MESH FILE NEEDED)");
46 }
47
48 const char *option;
49 option = "";
50 CHKERR moab.load_file(mesh_file_name, 0, option);
51
52 // Create MoFEM (Joseph) database
53 MoFEM::Core core(moab);
54 MoFEM::Interface &m_field = core;
55
56 // set entities bit level
57 BitRefLevel bit_level0;
58 bit_level0.set(0);
59 EntityHandle meshset_level0;
60 CHKERR moab.create_meshset(MESHSET_SET, meshset_level0);
61 CHKERR m_field.getInterface<BitRefManager>()->setBitRefLevelByDim(
62 0, 3, bit_level0);
63
64 // Fields
65 CHKERR m_field.add_field("FIELD1", H1, AINSWORTH_LEGENDRE_BASE, 3);
66#ifdef HOON
67 CHKERR m_field.add_field("MESH_NODE_POSITIONS", H1, AINSWORTH_LEGENDRE_BASE,
68 3, MB_TAG_SPARSE, MF_ZERO);
69#endif
70
71 // FE
72 CHKERR m_field.add_finite_element("TEST_FE");
73
74 // Define rows/cols and element data
75 CHKERR m_field.modify_finite_element_add_field_row("TEST_FE", "FIELD1");
76 CHKERR m_field.modify_finite_element_add_field_col("TEST_FE", "FIELD1");
77 CHKERR m_field.modify_finite_element_add_field_data("TEST_FE", "FIELD1");
78#ifdef HOON
79 CHKERR m_field.modify_finite_element_add_field_data("TEST_FE",
80 "MESH_NODE_POSITIONS");
81#endif
82
83 // Problem
84 CHKERR m_field.add_problem("TEST_PROBLEM");
85
86 // set finite elements for problem
87 CHKERR m_field.modify_problem_add_finite_element("TEST_PROBLEM", "TEST_FE");
88 // set refinement level for problem
89 CHKERR m_field.modify_problem_ref_level_add_bit("TEST_PROBLEM", bit_level0);
90
91 // meshset consisting all entities in mesh
92 EntityHandle root_set = moab.get_root_set();
93 // add entities to field
94 CHKERR m_field.add_ents_to_field_by_type(root_set, MBTET, "FIELD1");
95#ifdef HOON
96 CHKERR m_field.add_ents_to_field_by_type(root_set, MBTET,
97 "MESH_NODE_POSITIONS");
98#endif
99 // add entities to finite element
100 CHKERR
101 m_field.add_ents_to_finite_element_by_type(root_set, MBTET, "TEST_FE");
102
103 // set app. order
104 // see Hierarchic Finite Element Bases on Unstructured Tetrahedral Meshes
105 // (Mark Ainsworth & Joe Coyle)
106 int order = 3;
107 CHKERR
108 PetscOptionsGetInt(PETSC_NULLPTR, PETSC_NULLPTR, "-my_order", &order, &flg);
109 if (flg != PETSC_TRUE) {
110 order = 3;
111 }
112 CHKERR m_field.set_field_order(root_set, MBTET, "FIELD1", order);
113 CHKERR m_field.set_field_order(root_set, MBTRI, "FIELD1", order);
114 CHKERR m_field.set_field_order(root_set, MBEDGE, "FIELD1", order);
115 CHKERR m_field.set_field_order(root_set, MBVERTEX, "FIELD1", 1);
116#ifdef HOON
117 CHKERR m_field.set_field_order(root_set, MBTET, "MESH_NODE_POSITIONS", 2);
118 CHKERR m_field.set_field_order(root_set, MBTRI, "MESH_NODE_POSITIONS", 2);
119 CHKERR m_field.set_field_order(root_set, MBEDGE, "MESH_NODE_POSITIONS", 2);
120 CHKERR
121 m_field.set_field_order(root_set, MBVERTEX, "MESH_NODE_POSITIONS", 1);
122#endif
123
124 /****/
125 // build database
126 // build field
127 CHKERR m_field.build_fields();
128#ifdef HOON
129 Projection10NodeCoordsOnField ent_method_material(m_field,
130 "MESH_NODE_POSITIONS");
131 CHKERR m_field.loop_dofs("MESH_NODE_POSITIONS", ent_method_material);
132#endif
133 // build finite elemnts
134 CHKERR m_field.build_finite_elements();
135 // build adjacencies
136 CHKERR m_field.build_adjacencies(bit_level0);
137 // build problem
138 ProblemsManager *prb_mng_ptr;
139 CHKERR m_field.getInterface(prb_mng_ptr);
140 CHKERR prb_mng_ptr->buildProblem("TEST_PROBLEM", true);
141
142 /****/
143 // mesh partitioning
144 // partition
145 CHKERR prb_mng_ptr->partitionSimpleProblem("TEST_PROBLEM");
146 CHKERR prb_mng_ptr->partitionFiniteElements("TEST_PROBLEM");
147 // what are ghost nodes, see Petsc Manual
148 CHKERR prb_mng_ptr->partitionGhostDofs("TEST_PROBLEM");
149
150 Mat A;
151 CHKERR
152 m_field.getInterface<MatrixManager>()
153 ->createMPIAIJWithArrays<PetscGlobalIdx_mi_tag>("TEST_PROBLEM", &A);
154 Vec D, F;
155 CHKERR m_field.getInterface<VecManager>()->vecCreateGhost("TEST_PROBLEM",
156 ROW, &F);
157 CHKERR m_field.getInterface<VecManager>()->vecCreateGhost("TEST_PROBLEM",
158 COL, &D);
159
160 std::vector<Vec> vec_F;
161 vec_F.push_back(F);
162
163 {
164 MyFunApprox function_evaluator;
165 FieldApproximationH1 field_approximation(m_field);
166 field_approximation.loopMatrixAndVectorVolume(
167 "TEST_PROBLEM", "TEST_FE", "FIELD1", A, vec_F, function_evaluator);
168 }
169
170 CHKERR MatAssemblyBegin(A, MAT_FINAL_ASSEMBLY);
171 CHKERR MatAssemblyEnd(A, MAT_FINAL_ASSEMBLY);
172 CHKERR VecGhostUpdateBegin(F, ADD_VALUES, SCATTER_REVERSE);
173 CHKERR VecGhostUpdateEnd(F, ADD_VALUES, SCATTER_REVERSE);
174 CHKERR VecGhostUpdateBegin(F, INSERT_VALUES, SCATTER_FORWARD);
175 CHKERR VecGhostUpdateEnd(F, INSERT_VALUES, SCATTER_FORWARD);
176
177 KSP solver;
178 CHKERR KSPCreate(PETSC_COMM_WORLD, &solver);
179 CHKERR KSPSetOperators(solver, A, A);
180
181 CHKERR PetscOptionsInsertString(NULL,
182 "-ksp_monitor -ksp_type fgmres -pc_type "
183 "bjacobi -ksp_atol 0 -ksp_rtol 1e-12");
184
185 CHKERR KSPSetFromOptions(solver);
186 CHKERR PetscOptionsView(NULL, PETSC_VIEWER_STDOUT_WORLD);
187 CHKERR KSPSetUp(solver);
188 CHKERR KSPSolve(solver, F, D);
189 CHKERR VecGhostUpdateBegin(D, INSERT_VALUES, SCATTER_FORWARD);
190 CHKERR VecGhostUpdateEnd(D, INSERT_VALUES, SCATTER_FORWARD);
191
192 CHKERR m_field.getInterface<VecManager>()->setGlobalGhostVector(
193 "TEST_PROBLEM", COL, D, INSERT_VALUES, SCATTER_REVERSE);
194
195 CHKERR KSPDestroy(&solver);
196 CHKERR VecDestroy(&D);
197 CHKERR VecDestroy(&F);
198 CHKERR MatDestroy(&A);
199
200 EntityHandle fe_meshset = m_field.get_finite_element_meshset("TEST_FE");
201 Range tets;
202 CHKERR moab.get_entities_by_type(fe_meshset, MBTET, tets, true);
203 Range tets_edges;
204 CHKERR moab.get_adjacencies(tets, 1, false, tets_edges,
205 moab::Interface::UNION);
206 EntityHandle edges_meshset;
207 CHKERR moab.create_meshset(MESHSET_SET, edges_meshset);
208 CHKERR moab.add_entities(edges_meshset, tets);
209 CHKERR moab.add_entities(edges_meshset, tets_edges);
210 CHKERR moab.convert_entities(edges_meshset, true, false, false);
211
212 ProjectionFieldOn10NodeTet ent_method_field1_on_10nodeTet(
213 m_field, "FIELD1", true, false, "FIELD1");
214 CHKERR m_field.loop_dofs("FIELD1", ent_method_field1_on_10nodeTet);
215 ent_method_field1_on_10nodeTet.setNodes = false;
216 CHKERR m_field.loop_dofs("FIELD1", ent_method_field1_on_10nodeTet);
217
218 // if (pcomm->rank() == 0) {
219 // EntityHandle out_meshset;
220 // CHKERR moab.create_meshset(MESHSET_SET, out_meshset);
221 // CHKERR m_field.get_problem_finite_elements_entities(
222 // "TEST_PROBLEM", "TEST_FE", out_meshset);
223 // CHKERR moab.write_file("out.vtk", "VTK", "", &out_meshset, 1);
224 // CHKERR moab.delete_entities(&out_meshset, 1);
225 // }
226
227 typedef tee_device<std::ostream, std::ofstream> TeeDevice;
228 typedef stream<TeeDevice> TeeStream;
229
230 std::ofstream ofs("field_approximation.txt");
231 TeeDevice tee(cout, ofs);
232 TeeStream my_split(tee);
233
234 Range nodes;
235 CHKERR moab.get_entities_by_type(0, MBVERTEX, nodes, true);
236 MatrixDouble nodes_vals;
237 nodes_vals.resize(nodes.size(), 3);
238 CHKERR moab.tag_get_data(ent_method_field1_on_10nodeTet.th, nodes,
239 &*nodes_vals.data().begin());
240
241 const double eps = 1e-4;
242
243 my_split.precision(3);
244 my_split.setf(std::ios::fixed);
245 for (DoubleAllocator::iterator it = nodes_vals.data().begin();
246 it != nodes_vals.data().end(); it++) {
247 *it = fabs(*it) < eps ? 0.0 : *it;
248 }
249 my_split << nodes_vals << std::endl;
250
251 const Problem *problemPtr;
252 CHKERR m_field.get_problem("TEST_PROBLEM", &problemPtr);
253 std::map<EntityHandle, double> m0, m1, m2;
254 for (_IT_NUMEREDDOF_ROW_FOR_LOOP_(problemPtr, dit)) {
255
256 my_split.precision(3);
257 my_split.setf(std::ios::fixed);
258 double val = fabs(dit->get()->getFieldData()) < eps
259 ? 0.0
260 : dit->get()->getFieldData();
261 my_split << dit->get()->getPetscGlobalDofIdx() << " " << val << std::endl;
262 }
263 }
264 CATCH_ERRORS;
265
266 MoFEM::Core::Finalize();
267
268 return 0;
269}
eps
static const double eps
Definition check_base_functions_derivatives_on_tet.cpp:11
COL
@ COL
Definition definitions.h:136
ROW
@ ROW
Definition definitions.h:136
CATCH_ERRORS
#define CATCH_ERRORS
Catch errors.
Definition definitions.h:385
MF_ZERO
@ MF_ZERO
Definition definitions.h:111
AINSWORTH_LEGENDRE_BASE
@ AINSWORTH_LEGENDRE_BASE
Ainsworth Cole (Legendre) approx. base .
Definition definitions.h:60
H1
@ H1
continuous field
Definition definitions.h:85
MOFEM_INVALID_DATA
@ MOFEM_INVALID_DATA
Definition definitions.h:36
CHKERR
#define CHKERR
Inline error check.
Definition definitions.h:551
order
constexpr int order
Definition dg_projection.cpp:19
help
static char help[]
Definition field_approximation.cpp:11
TeeDevice
tee_device< std::ostream, std::ofstream > TeeDevice
Definition forces_and_sources_testing_contact_prism_element.cpp:9
TeeStream
stream< TeeDevice > TeeStream
Definition forces_and_sources_testing_contact_prism_element.cpp:10
F
@ F
Definition free_surface.cpp:624
MoFEM::CoreInterface::get_problem
virtual const Problem * get_problem(const std::string problem_name) const =0
Get the problem object.
MoFEM::CoreInterface::add_finite_element
virtual MoFEMErrorCode add_finite_element(const std::string &fe_name, enum MoFEMTypes bh=MF_EXCL, int verb=DEFAULT_VERBOSITY)=0
add finite element
MoFEM::CoreInterface::get_finite_element_meshset
virtual EntityHandle get_finite_element_meshset(const std::string name) const =0
MoFEM::CoreInterface::build_finite_elements
virtual MoFEMErrorCode build_finite_elements(int verb=DEFAULT_VERBOSITY)=0
Build finite elements.
MoFEM::CoreInterface::modify_finite_element_add_field_col
virtual MoFEMErrorCode modify_finite_element_add_field_col(const std::string &fe_name, const std::string name_row)=0
set field col which finite element use
MoFEM::CoreInterface::add_ents_to_finite_element_by_type
virtual MoFEMErrorCode add_ents_to_finite_element_by_type(const EntityHandle entities, const EntityType type, const std::string name, const bool recursive=true)=0
add entities to finite element
MoFEM::CoreInterface::modify_finite_element_add_field_row
virtual MoFEMErrorCode modify_finite_element_add_field_row(const std::string &fe_name, const std::string name_row)=0
set field row which finite element use
MoFEM::CoreInterface::modify_finite_element_add_field_data
virtual MoFEMErrorCode modify_finite_element_add_field_data(const std::string &fe_name, const std::string name_field)=0
set finite element field data
MoFEM::CoreInterface::build_fields
virtual MoFEMErrorCode build_fields(int verb=DEFAULT_VERBOSITY)=0
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::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.
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::partitionGhostDofs
MoFEMErrorCode partitionGhostDofs(const std::string name, int verb=VERBOSE)
determine ghost nodes
Definition ProblemsManager.cpp:2344
MoFEM::ProblemsManager::partitionSimpleProblem
MoFEMErrorCode partitionSimpleProblem(const std::string name, int verb=VERBOSE)
partition problem dofs
Definition ProblemsManager.cpp:1533
MoFEM::ProblemsManager::buildProblem
MoFEMErrorCode buildProblem(const std::string name, const bool square_matrix, int verb=VERBOSE)
build problem data structures
Definition ProblemsManager.cpp:86
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:2163
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::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::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
_IT_NUMEREDDOF_ROW_FOR_LOOP_
#define _IT_NUMEREDDOF_ROW_FOR_LOOP_(PROBLEMPTR, IT)
use with loops to iterate row DOFs
Definition ProblemsMultiIndices.hpp:164
D
double D
Definition initial_diffusion.cpp:44
mesh_file_name
char mesh_file_name[255]
Definition mesh_smoothing.cpp:22
EigenMatrix::Vec
const FTensor::Tensor2< T, Dim, Dim > Vec
Definition MatrixFunction.hpp:64
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::PetscOptionsGetInt
PetscErrorCode PetscOptionsGetInt(PetscOptions *, const char pre[], const char name[], PetscInt *ivalue, PetscBool *set)
Definition DeprecatedPetsc.hpp:142
MoFEM::PetscOptionsGetString
PetscErrorCode PetscOptionsGetString(PetscOptions *, const char pre[], const char name[], char str[], size_t size, PetscBool *set)
Definition DeprecatedPetsc.hpp:172
A
constexpr AssemblyType A
Definition operators_tests.cpp:30
FieldApproximationH1
Finite element for approximating analytical filed on the mesh.
Definition FieldApproximation.hpp:17
MoFEM::BitRefManager
Managing BitRefLevels.
Definition BitRefManager.hpp:21
MoFEM::CoreInterface::build_adjacencies
virtual MoFEMErrorCode build_adjacencies(const Range &ents, int verb=DEFAULT_VERBOSITY)=0
build adjacencies
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::CoreTmp< 0 >
Core (interface) class.
Definition Core.hpp:82
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
MoFEM::CoreTmp< 0 >::Finalize
static MoFEMErrorCode Finalize()
Checks for options to be called at the conclusion of the program.
Definition Core.cpp:118
MoFEM::DeprecatedCoreInterface
Deprecated interface functions.
Definition DeprecatedCoreInterface.hpp:16
MoFEM::MatrixManager
Matrix manager is used to build and partition problems.
Definition MatrixManager.hpp:21
MoFEM::Problem
keeps basic data about problem
Definition ProblemsMultiIndices.hpp:54
MoFEM::ProblemsManager
Problem manager is used to build and partition problems.
Definition ProblemsManager.hpp:133
MoFEM::Projection10NodeCoordsOnField
Projection of edge entities with one mid-node on hierarchical basis.
Definition Projection10NodeCoordsOnField.hpp:24
MoFEM::UnknownInterface::getInterface
MoFEMErrorCode getInterface(IFACE *&iface) const
Get interface reference to pointer of interface.
Definition UnknownInterface.hpp:93
MoFEM::VecManager
Vector manager is used to create vectors \mofem_vectors.
Definition VecManager.hpp:23
MyFunApprox
Example approx. function.
Definition field_approximation.cpp:14

Variable Documentation

◆ help

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

Definition at line 11 of file field_approximation.cpp.

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