Detailed Description

template<typename ShapeFunction, int GlobalDim>
class ProcessLib::WellboreCompensateNeumannBoundaryConditionLocalAssembler< ShapeFunction, GlobalDim >

Definition at line 49 of file WellboreCompensateNeumannBoundaryConditionLocalAssembler.h.

#include <WellboreCompensateNeumannBoundaryConditionLocalAssembler.h>

Inheritance diagram for ProcessLib::WellboreCompensateNeumannBoundaryConditionLocalAssembler< ShapeFunction, GlobalDim >:

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Collaboration diagram for ProcessLib::WellboreCompensateNeumannBoundaryConditionLocalAssembler< ShapeFunction, GlobalDim >:

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Public Member Functions
	WellboreCompensateNeumannBoundaryConditionLocalAssembler (MeshLib::Element const &e, std::size_t const local_matrix_size, NumLib::GenericIntegrationMethod const &integration_method, bool const is_axially_symmetric, WellboreCompensateNeumannBoundaryConditionData const &data)
void	assemble (std::size_t const mesh_item_id, NumLib::LocalToGlobalIndexMap const &dof_table_boundary, double const, std::vector< GlobalVector * > const &x, int const process_id, GlobalMatrix , GlobalVector &b, GlobalMatrix ) override
Public Member Functions inherited from ProcessLib::GenericNaturalBoundaryConditionLocalAssembler< ShapeFunction, GlobalDim >
	GenericNaturalBoundaryConditionLocalAssembler (MeshLib::Element const &e, bool is_axially_symmetric, NumLib::GenericIntegrationMethod const &integration_method)
Public Member Functions inherited from ProcessLib::GenericNaturalBoundaryConditionLocalAssemblerInterface
virtual	~GenericNaturalBoundaryConditionLocalAssemblerInterface ()=default

Private Types
using	Base
using	NodalVectorType = typename Base::NodalVectorType
using	NodalMatrixType = typename Base::NodalMatrixType

Private Attributes
MeshLib::Element const &	_element
WellboreCompensateNeumannBoundaryConditionData const &	_data
Base::NodalVectorType	_local_matrix_size

Additional Inherited Members
Protected Types inherited from ProcessLib::GenericNaturalBoundaryConditionLocalAssembler< ShapeFunction, GlobalDim >
using	ShapeMatricesType = ShapeMatrixPolicyType<ShapeFunction, GlobalDim>
using	NodalMatrixType = typename ShapeMatricesType::NodalMatrixType
using	NodalVectorType = typename ShapeMatricesType::NodalVectorType
Protected Attributes inherited from ProcessLib::GenericNaturalBoundaryConditionLocalAssembler< ShapeFunction, GlobalDim >
NumLib::GenericIntegrationMethod const &	_integration_method
std::vector< NAndWeight, Eigen::aligned_allocator< NAndWeight > > const	_ns_and_weights
MeshLib::Element const &	_element

Member Typedef Documentation

◆ Base

template<typename ShapeFunction, int GlobalDim>

using ProcessLib::WellboreCompensateNeumannBoundaryConditionLocalAssembler< ShapeFunction, GlobalDim >::Base

private

Initial value:

GenericNaturalBoundaryConditionLocalAssembler<ShapeFunction, GlobalDim>

ProcessLib::GenericNaturalBoundaryConditionLocalAssembler::GenericNaturalBoundaryConditionLocalAssembler

GenericNaturalBoundaryConditionLocalAssembler(MeshLib::Element const &e, bool is_axially_symmetric, NumLib::GenericIntegrationMethod const &integration_method)

Definition GenericNaturalBoundaryConditionLocalAssembler.h:72

Definition at line 53 of file WellboreCompensateNeumannBoundaryConditionLocalAssembler.h.

◆ NodalMatrixType

template<typename ShapeFunction, int GlobalDim>

using ProcessLib::WellboreCompensateNeumannBoundaryConditionLocalAssembler< ShapeFunction, GlobalDim >::NodalMatrixType = typename Base::NodalMatrixType

private

Definition at line 56 of file WellboreCompensateNeumannBoundaryConditionLocalAssembler.h.

◆ NodalVectorType

template<typename ShapeFunction, int GlobalDim>

using ProcessLib::WellboreCompensateNeumannBoundaryConditionLocalAssembler< ShapeFunction, GlobalDim >::NodalVectorType = typename Base::NodalVectorType

private

Definition at line 55 of file WellboreCompensateNeumannBoundaryConditionLocalAssembler.h.

Constructor & Destructor Documentation

◆ WellboreCompensateNeumannBoundaryConditionLocalAssembler()

template<typename ShapeFunction, int GlobalDim>

ProcessLib::WellboreCompensateNeumannBoundaryConditionLocalAssembler< ShapeFunction, GlobalDim >::WellboreCompensateNeumannBoundaryConditionLocalAssembler	(	MeshLib::Element const &	e,
		std::size_t const	local_matrix_size,
		NumLib::GenericIntegrationMethod const &	integration_method,
		bool const	is_axially_symmetric,
		WellboreCompensateNeumannBoundaryConditionData const &	data )

inline

The neumann_bc_term factor is directly integrated into the local element matrix.

Definition at line 61 of file WellboreCompensateNeumannBoundaryConditionLocalAssembler.h.

        : Base(e, is_axially_symmetric, integration_method),
          _element(e),
          _data(data),
          _local_matrix_size(local_matrix_size)
    {
    }

References _data, _element, and _local_matrix_size.

Member Function Documentation

◆ assemble()

template<typename ShapeFunction, int GlobalDim>

void ProcessLib::WellboreCompensateNeumannBoundaryConditionLocalAssembler< ShapeFunction, GlobalDim >::assemble	(	std::size_t const	mesh_item_id,
		NumLib::LocalToGlobalIndexMap const &	dof_table_boundary,
		double const	,
		std::vector< GlobalVector * > const &	x,
		int const	process_id,
		GlobalMatrix *	,
		GlobalVector &	b,
		GlobalMatrix *	)

inlineoverridevirtual

Implements ProcessLib::GenericNaturalBoundaryConditionLocalAssemblerInterface.

Definition at line 74 of file WellboreCompensateNeumannBoundaryConditionLocalAssembler.h.

    {
        NodalVectorType _local_rhs(_local_matrix_size);
        _local_rhs.setZero();
 
        unsigned const n_integration_points =
            Base::_integration_method.getNumberOfPoints();
 
        auto const indices_current_variable =
            NumLib::getIndices(mesh_item_id, dof_table_boundary);
        auto const indices_pressure = NumLib::getIndices(
            mesh_item_id, *_data.dof_table_boundary_pressure);
        auto const indices_velocity = NumLib::getIndices(
            mesh_item_id, *_data.dof_table_boundary_velocity);
        auto const indices_enthalpy = NumLib::getIndices(
            mesh_item_id, *_data.dof_table_boundary_enthalpy);
 
        std::vector<double> const local_pressure =
            x[process_id]->get(indices_pressure);
        std::vector<double> const local_velocity =
            x[process_id]->get(indices_velocity);
        std::vector<double> const local_enthalpy =
            x[process_id]->get(indices_enthalpy);
 
        auto const& medium = *_data.media_map.getMedium(_element.getID());
        auto const& liquid_phase =
            medium.phase(MaterialPropertyLib::PhaseName::AqueousLiquid);
        auto const& gas_phase =
            medium.phase(MaterialPropertyLib::PhaseName::Gas);
 
        ParameterLib::SpatialPosition pos;
        pos.setElementID(_element.getID());
 
        MaterialPropertyLib::VariableArray vars;
 
        for (unsigned ip = 0; ip < n_integration_points; ip++)
        {
            auto const& n_and_weight = Base::_ns_and_weights[ip];
            auto const& N = n_and_weight.N;
            auto const& w = n_and_weight.weight;
 
            double pressure_int_pt = 0.0;
            double velocity_int_pt = 0.0;
            double enthalpy_int_pt = 0.0;
 
            NumLib::shapeFunctionInterpolate(local_pressure, N,
                                             pressure_int_pt);
            NumLib::shapeFunctionInterpolate(local_velocity, N,
                                             velocity_int_pt);
            NumLib::shapeFunctionInterpolate(local_enthalpy, N,
                                             enthalpy_int_pt);
 
            vars.liquid_phase_pressure = pressure_int_pt;
            vars.enthalpy = enthalpy_int_pt;
 
            // Above the critical pressure the region 4 saturation line ends,
            // so there is no two-phase state to describe and the saturation
            // properties are not evaluated at all: they would be
            // extrapolated, and the closure they feed has no admissible void
            // fraction there. Such a section is compressed liquid, which the
            // region 1 properties of the liquid phase describe, and it is
            // solved as one, as in the process this boundary condition
            // compensates. Below the lower bound of the saturation line there
            // is no such fall-back, so the range check of the saturation
            // properties aborts the assembly as before.
            double dryness = 0.;
            double T_int_pt = 0.;
            double liquid_water_density = 0.;
            double vapour_water_density = 0.;
            double alpha = 0.;
            std::optional<MaterialPropertyLib::DriftFluxState> drift_flux_state;
 
            if (pressure_int_pt >
                MaterialLib::PhysicalConstant::CriticalPoint::PressureWater)
            {
                T_int_pt =
                    liquid_phase
                        .property(
                            MaterialPropertyLib::PropertyType::temperature)
                        .template value<double>(vars, pos, 0, 0);
                vars.temperature = T_int_pt;
 
                MaterialPropertyLib::IAPWSIF97Region1::checkStateInRange(
                    pressure_int_pt, T_int_pt,
                    "the compressed liquid state of the "
                    "WellboreCompensateNeumann boundary condition");
 
                liquid_water_density =
                    liquid_phase
                        .property(MaterialPropertyLib::PropertyType::density)
                        .template value<double>(vars, pos, 0, 0);
            }
            else
            {
                liquid_water_density =
                    liquid_phase
                        .property(MaterialPropertyLib::PropertyType::
                                      saturation_density)
                        .template value<double>(vars, pos, 0, 0);
 
                vapour_water_density =
                    gas_phase
                        .property(MaterialPropertyLib::PropertyType::
                                      saturation_density)
                        .template value<double>(vars, pos, 0, 0);
 
                double const h_sat_liq_w =
                    liquid_phase
                        .property(MaterialPropertyLib::PropertyType::
                                      saturation_enthalpy)
                        .template value<double>(vars, pos, 0, 0);
 
                double const h_sat_vap_w =
                    gas_phase
                        .property(MaterialPropertyLib::PropertyType::
                                      saturation_enthalpy)
                        .template value<double>(vars, pos, 0, 0);
 
                dryness = MaterialPropertyLib::steamDryness(
                    enthalpy_int_pt, h_sat_liq_w, h_sat_vap_w);
 
                T_int_pt =
                    (dryness == 0)
                        ? liquid_phase
                              .property(MaterialPropertyLib::PropertyType::
                                            temperature)
                              .template value<double>(vars, pos, 0, 0)
                        : gas_phase
                              .property(MaterialPropertyLib::PropertyType::
                                            saturation_temperature)
                              .template value<double>(vars, pos, 0, 0);
 
                vars.temperature = T_int_pt;
 
                // For the calculation of the void fraction of vapour,
                // see Rohuani, Z., and E. Axelsson. "Calculation of volume
                // void fraction in a subcooled and quality region."
                // International Journal of Heat and Mass Transfer 17 (1970):
                // 383-393.
 
                // The drift is aligned with the mixture flow so that the
                // closure below and the slip momentum term further down are
                // consistent, see
                // MaterialPropertyLib::alignedDriftFluxVelocity().
                drift_flux_state = MaterialPropertyLib::driftFluxState(
                    dryness, T_int_pt, vapour_water_density,
                    liquid_water_density, velocity_int_pt);
 
                // solving void fraction of vapour: Rouhani-Axelsson
                auto const alpha_solution =
                    MaterialPropertyLib::computeVapourVoidFraction(
                        *drift_flux_state);
 
                if (!alpha_solution)
                {
                    throw NumLib::AssemblyException(fmt::format(
                        "The drift-flux closure of the "
                        "WellboreCompensateNeumann boundary condition has no "
                        "admissible vapour void fraction in element {:d}, "
                        "integration point {:d}: pressure {:g} Pa, mixture "
                        "velocity {:g} m/s, specific enthalpy {:g} J/kg, "
                        "temperature {:g} K, {}",
                        _element.getID(), ip, pressure_int_pt, velocity_int_pt,
                        enthalpy_int_pt, T_int_pt,
                        MaterialPropertyLib::voidFractionClosureDiagnostics(
                            *drift_flux_state)));
                }
 
                alpha = *alpha_solution;
 
                if (alpha == 0)
                {
                    liquid_water_density =
                        liquid_phase
                            .property(
                                MaterialPropertyLib::PropertyType::density)
                            .template value<double>(vars, pos, 0, 0);
                }
            }
 
            double const mix_density = vapour_water_density * alpha +
                                       liquid_water_density * (1 - alpha);
 
            double const gamma =
                drift_flux_state ? MaterialPropertyLib::mixtureSlipParameter(
                                       alpha, *drift_flux_state)
                                 : 0.;
 
            double const neumann_ip_values =
                _data.coefficients.pressure * mix_density * velocity_int_pt +
                _data.coefficients.velocity *
                    (mix_density * velocity_int_pt * velocity_int_pt + gamma) +
                _data.coefficients.enthalpy * mix_density * velocity_int_pt *
                    velocity_int_pt * velocity_int_pt * 0.5;
            _local_rhs.noalias() += N.transpose() * neumann_ip_values * w;
        }
 
        b.add(indices_current_variable, _local_rhs);
    }