Poisson2DNonhomogeneous Struct Reference

Collaboration diagram for Poisson2DNonhomogeneous:

Public Member Functions
	Poisson2DNonhomogeneous (MoFEM::Interface &m_field)
MoFEMErrorCode	runProgram ()
	[Check]

Private Types
enum	NORMS { NORM = 0 , LAST_NORM }

Private Member Functions
MoFEMErrorCode	readMesh ()
	[Read mesh]
MoFEMErrorCode	setupProblem ()
	[Read mesh]
MoFEMErrorCode	boundaryCondition ()
	[Setup problem]
MoFEMErrorCode	assembleSystem ()
	[Boundary condition]
MoFEMErrorCode	setIntegrationRules ()
	[Assemble system]
MoFEMErrorCode	solveSystem ()
	[Set integration rules]
MoFEMErrorCode	outputResults ()
	[Solve system]
MoFEMErrorCode	checkResults ()
	[Output results]

Static Private Member Functions
static double	sourceTermFunction (const double x, const double y, const double z)
static double	boundaryFunction (const double x, const double y, const double z)

Private Attributes
MoFEM::Interface &	mField
Simple *	simpleInterface
std::string	domainField
int	oRder
boost::shared_ptr< std::vector< unsigned char > >	boundaryMarker
Range	boundaryEntitiesForFieldsplit
int	atom_test = 0

Detailed Description

Definition at line 10 of file poisson_2d_nonhomogeneous.cpp.

Member Enumeration Documentation

NORMS

enum Poisson2DNonhomogeneous::NORMS

private

Enumerator
NORM
LAST_NORM

Definition at line 54 of file poisson_2d_nonhomogeneous.cpp.

{ NORM = 0, LAST_NORM };

Constructor & Destructor Documentation

Poisson2DNonhomogeneous()

Poisson2DNonhomogeneous::Poisson2DNonhomogeneous

(

MoFEM::Interface &

m_field

)

Definition at line 57 of file poisson_2d_nonhomogeneous.cpp.

    : domainField("U"), mField(m_field) {}

Member Function Documentation

assembleSystem()

MoFEMErrorCode Poisson2DNonhomogeneous::assembleSystem ( )

private

[Boundary condition]

[Assemble system]

Definition at line 143 of file poisson_2d_nonhomogeneous.cpp.

                                                       {
  MoFEMFunctionBegin;
 
  auto pipeline_mng = mField.getInterface<PipelineManager>();
 
  { // Push operators to the Pipeline that is responsible for calculating LHS of
    // domain elements
    CHKERR AddHOOps<SPACE_DIM, SPACE_DIM, SPACE_DIM>::add(
        pipeline_mng->getOpDomainLhsPipeline(), {H1});
    pipeline_mng->getOpDomainLhsPipeline().push_back(
        new OpSetBc(domainField, true, boundaryMarker));
    pipeline_mng->getOpDomainLhsPipeline().push_back(
        new OpDomainLhs(domainField, domainField));
    pipeline_mng->getOpDomainLhsPipeline().push_back(
        new OpUnSetBc(domainField));
  }
 
  { // Push operators to the Pipeline that is responsible for calculating RHS of
    // domain elements
    pipeline_mng->getOpDomainRhsPipeline().push_back(
        new OpSetBc(domainField, true, boundaryMarker));
    pipeline_mng->getOpDomainRhsPipeline().push_back(
        new OpDomainRhs(domainField, sourceTermFunction));
    pipeline_mng->getOpDomainRhsPipeline().push_back(
        new OpUnSetBc(domainField));
  }
 
  { // Push operators to the Pipeline that is responsible for calculating LHS of
    // boundary elements
    pipeline_mng->getOpBoundaryLhsPipeline().push_back(
        new OpSetBc(domainField, false, boundaryMarker));
    pipeline_mng->getOpBoundaryLhsPipeline().push_back(
        new OpBoundaryLhs(domainField, domainField));
    pipeline_mng->getOpBoundaryLhsPipeline().push_back(
        new OpUnSetBc(domainField));
  }
 
  { // Push operators to the Pipeline that is responsible for calculating RHS of
    // boundary elements
    pipeline_mng->getOpBoundaryRhsPipeline().push_back(
        new OpSetBc(domainField, false, boundaryMarker));
    pipeline_mng->getOpBoundaryRhsPipeline().push_back(
        new OpBoundaryRhs(domainField, boundaryFunction));
    pipeline_mng->getOpBoundaryRhsPipeline().push_back(
        new OpUnSetBc(domainField));
  }
 
  MoFEMFunctionReturn(0);
}

boundaryCondition()

MoFEMErrorCode Poisson2DNonhomogeneous::boundaryCondition ( )

private

[Setup problem]

[Boundary condition]

Definition at line 125 of file poisson_2d_nonhomogeneous.cpp.

                                                          {
  MoFEMFunctionBegin;
 
  auto bc_mng = mField.getInterface<BcManager>();
  CHKERR bc_mng->pushMarkDOFsOnEntities(simpleInterface->getProblemName(),
                                        "BOUNDARY_CONDITION", domainField, 0, 1,
                                        true);
  // merge markers from all blocksets "BOUNDARY_CONDITION"
  boundaryMarker = bc_mng->getMergedBlocksMarker({"BOUNDARY_CONDITION"});
  // get entities on blocksets "BOUNDARY_CONDITION"
  boundaryEntitiesForFieldsplit =
      bc_mng->getMergedBlocksRange({"BOUNDARY_CONDITION"});
 
  MoFEMFunctionReturn(0);
}

boundaryFunction()

static double Poisson2DNonhomogeneous::boundaryFunction ( const double  x, const double  y, const double  z  )

inlinestaticprivate

Definition at line 34 of file poisson_2d_nonhomogeneous.cpp.

                                                 {
    return cos(x * M_PI) * cos(y * M_PI);
    // return 0;
  }

checkResults()

MoFEMErrorCode Poisson2DNonhomogeneous::checkResults ( )

private

[Output results]

[Check]

Definition at line 295 of file poisson_2d_nonhomogeneous.cpp.

                                                     {
  MoFEMFunctionBegin;
 
  auto check_result_fe_ptr = boost::make_shared<FaceEle>(mField);
  auto petscVec =
      createVectorMPI(mField.get_comm(),
                      (mField.get_comm_rank() == 0) ? LAST_NORM : 0, LAST_NORM);
 
  CHK_THROW_MESSAGE((AddHOOps<SPACE_DIM, SPACE_DIM, SPACE_DIM>::add(
                        check_result_fe_ptr->getOpPtrVector(), {H1})),
                    "Apply transform");
 
  check_result_fe_ptr->getRuleHook = [](int, int, int p) { return 2 * p; };
  auto analyticalFunction = [&](double x, double y, double z) {
    return cos(x * M_PI) * cos(y * M_PI);
  };
 
  auto u_ptr = boost::make_shared<VectorDouble>();
 
  check_result_fe_ptr->getOpPtrVector().push_back(
      new OpCalculateScalarFieldValues(domainField, u_ptr));
  auto mValFuncPtr = boost::make_shared<VectorDouble>();
  check_result_fe_ptr->getOpPtrVector().push_back(
      new OpGetTensor0fromFunc(mValFuncPtr, analyticalFunction));
  check_result_fe_ptr->getOpPtrVector().push_back(
      new OpCalcNormL2Tensor0(u_ptr, petscVec, NORM, mValFuncPtr));
  CHKERR VecZeroEntries(petscVec);
  CHKERR DMoFEMLoopFiniteElements(simpleInterface->getDM(),
                                  simpleInterface->getDomainFEName(),
                                  check_result_fe_ptr);
  CHKERR VecAssemblyBegin(petscVec);
  CHKERR VecAssemblyEnd(petscVec);
  MOFEM_LOG_CHANNEL("SELF"); // Clear channel from old tags
  if (mField.get_comm_rank() == 0) {
    const double *norms;
    CHKERR VecGetArrayRead(petscVec, &norms);
    MOFEM_TAG_AND_LOG("SELF", Sev::inform, "Errors")
        << "NORM: " << std::sqrt(norms[NORM]);
    CHKERR VecRestoreArrayRead(petscVec, &norms);
  }
  if (atom_test && !mField.get_comm_rank()) {
    const double *t_ptr;
    CHKERR VecGetArrayRead(petscVec, &t_ptr);
    double ref_norm = 1.4e-04;
    double cal_norm;
    switch (atom_test) {
    case 1: // 2D
      cal_norm = sqrt(t_ptr[0]);
      break;
    default:
      SETERRQ(PETSC_COMM_SELF, MOFEM_INVALID_DATA,
               "atom test %d does not exist", atom_test);
    }
    if (cal_norm > ref_norm) {
      SETERRQ(PETSC_COMM_SELF, MOFEM_ATOM_TEST_INVALID,
               "atom test %d failed! Calculated Norm %3.16e is greater than "
               "reference Norm %3.16e",
               atom_test, cal_norm, ref_norm);
    }
    CHKERR VecRestoreArrayRead(petscVec, &t_ptr);
  }
  MoFEMFunctionReturn(0);
}

outputResults()

MoFEMErrorCode Poisson2DNonhomogeneous::outputResults ( )

private

[Solve system]

[Output results]

Definition at line 268 of file poisson_2d_nonhomogeneous.cpp.

                                                      {
  MoFEMFunctionBegin;
 
  auto pipeline_mng = mField.getInterface<PipelineManager>();
 
  auto d_ptr = boost::make_shared<VectorDouble>();
  auto l_ptr = boost::make_shared<VectorDouble>();
 
  using OpPPMap = OpPostProcMapInMoab<SPACE_DIM, SPACE_DIM>;
 
  auto post_proc_fe = boost::make_shared<PostProcFaceEle>(mField);
 
  post_proc_fe->getOpPtrVector().push_back(
      new OpCalculateScalarFieldValues(domainField, d_ptr));
  post_proc_fe->getOpPtrVector().push_back(new OpPPMap(
      post_proc_fe->getPostProcMesh(), post_proc_fe->getMapGaussPts(),
      {{domainField, d_ptr}}, {}, {}, {}));
  pipeline_mng->getDomainPostProcFE() = post_proc_fe;
 
  CHKERR pipeline_mng->loopFiniteElementsPostProc();
  CHKERR post_proc_fe->writeFile("out_result.h5m");
 
  MoFEMFunctionReturn(0);
}

readMesh()

MoFEMErrorCode Poisson2DNonhomogeneous::readMesh ( )

private

[Read mesh]

Definition at line 60 of file poisson_2d_nonhomogeneous.cpp.

                                                 {
  MoFEMFunctionBegin;
 
  CHKERR mField.getInterface(simpleInterface);
  CHKERR simpleInterface->getOptions();
  CHKERR simpleInterface->loadFile();
 
  MoFEMFunctionReturn(0);
}

runProgram()

MoFEMErrorCode Poisson2DNonhomogeneous::runProgram

(

)

[Check]

[Run program]

Definition at line 361 of file poisson_2d_nonhomogeneous.cpp.

                                                   {
  MoFEMFunctionBegin;
 
  CHKERR readMesh();
  CHKERR setupProblem();
  CHKERR boundaryCondition();
  CHKERR assembleSystem();
  CHKERR setIntegrationRules();
  CHKERR solveSystem();
  CHKERR outputResults();
  CHKERR checkResults();
 
  MoFEMFunctionReturn(0);
}

setIntegrationRules()

MoFEMErrorCode Poisson2DNonhomogeneous::setIntegrationRules ( )

private

[Assemble system]

[Set integration rules]

Definition at line 195 of file poisson_2d_nonhomogeneous.cpp.

                                                            {
  MoFEMFunctionBegin;
 
  auto pipeline_mng = mField.getInterface<PipelineManager>();
 
  auto domain_rule_lhs = [](int, int, int p) -> int { return 2 * (p - 1); };
  auto domain_rule_rhs = [](int, int, int p) -> int { return 2 * (p - 1); };
  CHKERR pipeline_mng->setDomainLhsIntegrationRule(domain_rule_lhs);
  CHKERR pipeline_mng->setDomainRhsIntegrationRule(domain_rule_rhs);
 
  auto boundary_rule_lhs = [](int, int, int p) -> int { return 2 * p; };
  auto boundary_rule_rhs = [](int, int, int p) -> int { return 2 * p; };
  CHKERR pipeline_mng->setBoundaryLhsIntegrationRule(boundary_rule_lhs);
  CHKERR pipeline_mng->setBoundaryLhsIntegrationRule(boundary_rule_rhs);
 
  MoFEMFunctionReturn(0);
}

setupProblem()

MoFEMErrorCode Poisson2DNonhomogeneous::setupProblem ( )

private

[Read mesh]

[Setup problem]

Definition at line 72 of file poisson_2d_nonhomogeneous.cpp.

                                                     {
  MoFEMFunctionBegin;
  Range domain_ents;
  CHKERR mField.get_moab().get_entities_by_dimension(0, SPACE_DIM, domain_ents,
                                                     true);
  auto get_ents_by_dim = [&](const auto dim) {
    if (dim == SPACE_DIM) {
      return domain_ents;
    } else {
      Range ents;
      if (dim == 0)
        CHKERR mField.get_moab().get_connectivity(domain_ents, ents, true);
      else
        CHKERR mField.get_moab().get_entities_by_dimension(0, dim, ents, true);
      return ents;
    }
  };
  // Select base
  auto get_base = [&]() {
    auto domain_ents = get_ents_by_dim(SPACE_DIM);
    if (domain_ents.empty())
      CHK_THROW_MESSAGE(MOFEM_NOT_FOUND, "Empty mesh");
    const auto type = type_from_handle(domain_ents[0]);
    switch (type) {
    case MBQUAD:
      return DEMKOWICZ_JACOBI_BASE;
    case MBHEX:
      return DEMKOWICZ_JACOBI_BASE;
    case MBTRI:
      return AINSWORTH_LEGENDRE_BASE;
    case MBTET:
      return AINSWORTH_LEGENDRE_BASE;
    default:
      CHK_THROW_MESSAGE(MOFEM_NOT_FOUND, "Element type not handled");
    }
    return NOBASE;
  };
  auto base = get_base();
  CHKERR simpleInterface->addDomainField(domainField, H1, base, 1);
  CHKERR simpleInterface->addBoundaryField(domainField, H1, base, 1);
  int oRder = 3;
  CHKERR PetscOptionsGetInt(PETSC_NULLPTR, "", "-atom_test", &atom_test,
                            PETSC_NULLPTR);
  CHKERR PetscOptionsGetInt(PETSC_NULLPTR, "", "-order", &oRder, PETSC_NULLPTR);
  CHKERR simpleInterface->setFieldOrder(domainField, oRder);
 
  CHKERR simpleInterface->setUp();
 
  MoFEMFunctionReturn(0);
}

solveSystem()

MoFEMErrorCode Poisson2DNonhomogeneous::solveSystem ( )

private

[Set integration rules]

[Solve system]

Definition at line 215 of file poisson_2d_nonhomogeneous.cpp.

                                                    {
  MoFEMFunctionBegin;
 
  auto pipeline_mng = mField.getInterface<PipelineManager>();
 
  auto ksp_solver = pipeline_mng->createKSP();
  CHKERR KSPSetFromOptions(ksp_solver);
 
  // Create RHS and solution vectors
  auto dm = simpleInterface->getDM();
  auto F = createDMVector(dm);
  auto D = vectorDuplicate(F);
 
  // Setup fieldsplit (block) solver - optional: yes/no
  if (1) {
    PC pc;
    CHKERR KSPGetPC(ksp_solver, &pc);
    PetscBool is_pcfs = PETSC_FALSE;
    PetscObjectTypeCompare((PetscObject)pc, PCFIELDSPLIT, &is_pcfs);
 
    // Set up FIELDSPLIT, only when user set -pc_type fieldsplit
    // Identify the index for boundary entities, remaining will be for domain
    // Then split the fields for boundary and domain for solving
    if (is_pcfs == PETSC_TRUE) {
      const MoFEM::Problem *problem_ptr;
      CHKERR DMMoFEMGetProblemPtr(dm, &problem_ptr);
      IS is_boundary;
      CHKERR mField.getInterface<ISManager>()->isCreateProblemFieldAndRank(
          problem_ptr->getName(), ROW, domainField, 0, 1, &is_boundary,
          &boundaryEntitiesForFieldsplit);
      // CHKERR ISView(is_boundary, PETSC_VIEWER_STDOUT_SELF);
      CHKERR PCFieldSplitSetIS(pc, NULL, is_boundary);
      CHKERR ISDestroy(&is_boundary);
    }
  }
 
  CHKERR KSPSetUp(ksp_solver);
 
  // Solve the system
  CHKERR KSPSolve(ksp_solver, F, D);
  CHKERR mField.getInterface<TestingInterface>()->checkSolver(
      ksp_solver, "poisson 2d nonhomogeneous");
 
  // Scatter result data on the mesh
  CHKERR VecGhostUpdateBegin(D, INSERT_VALUES, SCATTER_FORWARD);
  CHKERR VecGhostUpdateEnd(D, INSERT_VALUES, SCATTER_FORWARD);
  CHKERR DMoFEMMeshToLocalVector(dm, D, INSERT_VALUES, SCATTER_REVERSE);
 
  MoFEMFunctionReturn(0);
}

sourceTermFunction()

static double Poisson2DNonhomogeneous::sourceTermFunction ( const double  x, const double  y, const double  z  )

inlinestaticprivate

Definition at line 29 of file poisson_2d_nonhomogeneous.cpp.

                                                   {
    return 2. * M_PI * M_PI * cos(x * M_PI) * cos(y * M_PI);
  }

Member Data Documentation

atom_test

int Poisson2DNonhomogeneous::atom_test = 0

private

Definition at line 53 of file poisson_2d_nonhomogeneous.cpp.

boundaryEntitiesForFieldsplit

Range Poisson2DNonhomogeneous::boundaryEntitiesForFieldsplit

private

Definition at line 52 of file poisson_2d_nonhomogeneous.cpp.

boundaryMarker

boost::shared_ptr<std::vector<unsigned char> > Poisson2DNonhomogeneous::boundaryMarker

private

Definition at line 49 of file poisson_2d_nonhomogeneous.cpp.

domainField

std::string Poisson2DNonhomogeneous::domainField

private

Definition at line 45 of file poisson_2d_nonhomogeneous.cpp.

mField

MoFEM::Interface& Poisson2DNonhomogeneous::mField

private

Definition at line 41 of file poisson_2d_nonhomogeneous.cpp.

oRder

int Poisson2DNonhomogeneous::oRder

private

Definition at line 46 of file poisson_2d_nonhomogeneous.cpp.

simpleInterface

Simple* Poisson2DNonhomogeneous::simpleInterface

private

Definition at line 42 of file poisson_2d_nonhomogeneous.cpp.

---

The documentation for this struct was generated from the following file:

• tutorials/scl-2_poisson_2d_nonhomogeneous/poisson_2d_nonhomogeneous.cpp