FluidLevel.hpp

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/**
 * @file FluidLevel.hpp
 * @brief Natural boundary condition applying pressure from fluid.
 * @date 2024-01-02
 *
 * @copyright Copyright (c) 2024
 *
 * Fluid level is type of linear pressure boundary condition. 
 * 
 * \todo Implement time depended fluid level.
 * 
 */
 
namespace ElasticExample {
 
template <CubitBC BC> struct FluidLevelType {};
 
template <CubitBC BC> struct GetFluidLevel;
 
template <> struct GetFluidLevel<BLOCKSET> {
  GetFluidLevel() = delete;
 
  static MoFEMErrorCode getParams(double &density,
                                  std::array<double, 3> &gravity,
                                  std::array<double, 3> &zero_pressure,
                                  boost::shared_ptr<Range> &ents,
                                  MoFEM::Interface &m_field, int ms_id) {
    MoFEMFunctionBegin;
 
    auto cubit_meshset_ptr =
        m_field.getInterface<MeshsetsManager>()->getCubitMeshsetPtr(ms_id,
                                                                    BLOCKSET);
    std::vector<double> block_data;
    CHKERR cubit_meshset_ptr->getAttributes(block_data);
    if (block_data.size() != 1 + 3 + 3) {
      SETERRQ(PETSC_COMM_SELF, MOFEM_DATA_INCONSISTENCY,
              "Expected that block has two attribute");
    }
    density = block_data[0];
    gravity = {block_data[1], block_data[2], block_data[3]};
    zero_pressure = {block_data[4], block_data[5], block_data[6]};
 
    MOFEM_LOG_CHANNEL("WORLD");
    MOFEM_TAG_AND_LOG("WORLD", Sev::inform, "FluidPressure")
        << "Density " << density;
    MOFEM_TAG_AND_LOG("WORLD", Sev::inform, "FluidPressure")
        << "Gravity " << gravity[0] << " " << gravity[1] << " " << gravity[2];
    MOFEM_TAG_AND_LOG("WORLD", Sev::inform, "FluidPressure")
        << "Zero pressure " << zero_pressure[0] << " " << zero_pressure[1]
        << " " << zero_pressure[2];
 
    ents = boost::make_shared<Range>();
    CHKERR
    m_field.get_moab().get_entities_by_handle(cubit_meshset_ptr->meshset,
                                              *(ents), true);
 
    MOFEM_LOG_CHANNEL("SYNC");
    MOFEM_TAG_AND_LOG("SYNC", Sev::noisy, "FluidPressure") << *ents;
    MOFEM_LOG_SEVERITY_SYNC(m_field.get_comm(), Sev::noisy);
 
    MoFEMFunctionReturn(0);
  }
};
 
} // namespace ElasticExample
 
template <int FIELD_DIM, AssemblyType A, typename EleOp>
struct OpFluxRhsImpl<ElasticExample::FluidLevelType<BLOCKSET>, 1, FIELD_DIM, A,
                     GAUSS, EleOp> : OpBaseImpl<A, EleOp> {
 
  using OpBase = OpBaseImpl<A, EleOp>;
 
  OpFluxRhsImpl(MoFEM::Interface &m_field, int ms_id, std::string field_name,
                std::vector<boost::shared_ptr<ScalingMethod>> smv,
                double scale);
 
protected:
  double fluidDensity;
  std::array<double, 3> gravityAcceleration;
  std::array<double, 3> zeroPressure;
  std::vector<boost::shared_ptr<ScalingMethod>> vecOfTimeScalingMethods;
  double rhsScale;
 
  MoFEMErrorCode iNtegrate(EntitiesFieldData::EntData &data);
};
 
template <int FIELD_DIM, AssemblyType A, typename EleOp>
OpFluxRhsImpl<
    ElasticExample::FluidLevelType<BLOCKSET>, 1, FIELD_DIM, A, GAUSS,
    EleOp>::OpFluxRhsImpl(MoFEM::Interface &m_field, int ms_id,
                          std::string field_name,
                          std::vector<boost::shared_ptr<ScalingMethod>> smv,
                          double scale)
    : OpBase(field_name, field_name, OpBase::OPROW),
      vecOfTimeScalingMethods(smv), rhsScale(scale) {
  CHK_THROW_MESSAGE(ElasticExample::GetFluidLevel<BLOCKSET>::getParams(
                        this->fluidDensity, this->gravityAcceleration,
                        this->zeroPressure, this->entsPtr, m_field, ms_id),
                    "Can not read spring stiffness data from blockset");
}
 
template <int FIELD_DIM, AssemblyType A, typename EleOp>
MoFEMErrorCode
MoFEM::OpFluxRhsImpl<ElasticExample::FluidLevelType<BLOCKSET>, 1, FIELD_DIM, A,
                     GAUSS, EleOp>::iNtegrate(EntitiesFieldData::EntData
                                                  &row_data) {
  FTensor::Index<'i', FIELD_DIM> i;
  FTensor::Index<'j', FIELD_DIM> j;
  MoFEMFunctionBegin;
  // get integration weights
  auto t_w = OpBase::getFTensor0IntegrationWeight();
  // get base function gradient on rows
  auto t_row_base = row_data.getFTensor0N();
 
  // get coordinate at integration points
  auto t_normal = OpBase::getFTensor1NormalsAtGaussPts();
    // get coordinate at integration points
  auto t_coord = OpBase::getFTensor1CoordsAtGaussPts();
 
  auto t_gravity = getFTensor1FromPtr<FIELD_DIM>(gravityAcceleration.data());
  auto t_zero_pressure = getFTensor1FromPtr<FIELD_DIM>(zeroPressure.data());
 
  double s = 1;
  for (auto &o : vecOfTimeScalingMethods) {
    s *= o->getScale(OpBase::getTStime());
  }
 
  // loop over integration points
  for (int gg = 0; gg != OpBase::nbIntegrationPts; ++gg) {
    // take into account Jacobian
    const double alpha = t_w * rhsScale;
 
    FTensor::Tensor1<double, FIELD_DIM> t_level;
    t_level(i) = t_coord(i) - t_zero_pressure(i);
    auto dot = t_gravity(i) * t_level(i);
 
    FTensor::Tensor1<double, FIELD_DIM> t_force;
    t_force(i) = -s * fluidDensity * dot * t_normal(i);
 
    // loop over rows base functions
    auto t_nf = getFTensor1FromArray<FIELD_DIM, FIELD_DIM>(OpBase::locF);
    int rr = 0;
    for (; rr != OpBase::nbRows / FIELD_DIM; ++rr) {
      t_nf(i) += (alpha * t_row_base) * t_force(i);
      ++t_row_base;
      ++t_nf;
    }
 
    for (; rr < OpBase::nbRowBaseFunctions; ++rr)
      ++t_row_base;
 
    ++t_w;
    ++t_coord;
    ++t_normal;
  }
  MoFEMFunctionReturn(0);
}
 
template <CubitBC BCTYPE, int BASE_DIM, int FIELD_DIM, AssemblyType A,
          IntegrationType I, typename OpBase>
struct AddFluxToRhsPipelineImpl<
 
    OpFluxRhsImpl<ElasticExample::FluidLevelType<BCTYPE>, BASE_DIM, FIELD_DIM,
                  A, I, OpBase>,
    A, I, OpBase
 
    > {
 
  AddFluxToRhsPipelineImpl() = delete;
 
  static MoFEMErrorCode add(
 
      boost::ptr_deque<ForcesAndSourcesCore::UserDataOperator> &pipeline,
      MoFEM::Interface &m_field, std::string field_name,
      std::vector<boost::shared_ptr<ScalingMethod>> smv, double scale,
      std::string block_name, Sev sev
 
  ) {
    MoFEMFunctionBegin;
 
    using OP = OpFluxRhsImpl<ElasticExample::FluidLevelType<BLOCKSET>, BASE_DIM,
                             FIELD_DIM, PETSC, GAUSS, OpBase>;
 
    auto add_op = [&](auto &&meshset_vec_ptr) {
      for (auto m : meshset_vec_ptr) {
        MOFEM_TAG_AND_LOG("WORLD", sev, "OFluidLevelRhs") << "Add " << *m;
        pipeline.push_back(
            new OP(m_field, m->getMeshsetId(), field_name, smv, scale));
      }
      MOFEM_LOG_CHANNEL("WORLD");
    };
 
    switch (BCTYPE) {
    case BLOCKSET:
      add_op(
 
          m_field.getInterface<MeshsetsManager>()->getCubitMeshsetPtr(
              std::regex(
 
                  (boost::format("%s(.*)") % block_name).str()
 
                      ))
 
      );
 
      break;
    default:
      SETERRQ(PETSC_COMM_SELF, MOFEM_NOT_IMPLEMENTED,
              "Handling of bc type not implemented");
      break;
    }
    MoFEMFunctionReturn(0);
  }
};