The basic assembler that can be used for any standard DG scheme with flux and source. More...

#include <dg.hh>

Inheritance diagram for DiFfRG::DG::Assembler< Discretization_, Model_ >:

Public Types
using	Discretization = Discretization_

using	Model = Model_

using	NumberType = typename Discretization::NumberType

using	VectorType = typename Discretization::VectorType

using	Components = typename Discretization::Components

Public Types inherited from DiFfRG::FEMAssembler< Discretization_, Model_ >
using	Discretization = Discretization_

using	Model = Model_

using	NumberType = typename Discretization::NumberType

using	VectorType = typename Discretization::VectorType

using	Components = typename Discretization::Components

Public Types inherited from DiFfRG::AbstractAssembler< Discretization_::VectorType, Discretization_::SparseMatrixType, Discretization_::dim >
using	NumberType

Public Member Functions
	Assembler (Discretization &discretization, Model &model, const JSONValue &json)

virtual void	reinit_vector (VectorType &vec) const override

virtual void	reinit () override
	Reinitialize the assembler. This is necessary if the mesh has changed, e.g. after a mesh refinement.

virtual void	rebuild_jacobian_sparsity () override

virtual const SparsityPattern &	get_sparsity_pattern_jacobian () const override
	Obtain the sparsity pattern of the jacobian matrix.

virtual const SparseMatrix< NumberType > &	get_mass_matrix () const override
	Obtain the mass matrix.

virtual void	refinement_indicator (Vector< double > &indicator, const VectorType &solution_global) override
	refinement indicator for adaptivity. Calls the model's cell_indicator and face_indicator functions.

virtual void	mass (VectorType &mass, const VectorType &solution_global, const VectorType &solution_global_dot, NumberType weight) override

virtual void	residual (VectorType &residual, const VectorType &solution_global, NumberType weight, const VectorType &solution_global_dot, NumberType weight_mass, const VectorType &variables=VectorType()) override

virtual void	jacobian_mass (SparseMatrix< NumberType > &jacobian, const VectorType &solution_global, const VectorType &solution_global_dot, NumberType alpha=1., NumberType beta=1.) override

virtual void	jacobian (SparseMatrix< NumberType > &jacobian, const VectorType &solution_global, NumberType weight, const VectorType &solution_global_dot, NumberType alpha, NumberType beta, const VectorType &variables=VectorType()) override

void	log (const std::string logger)

double	average_time_reinit () const

uint	num_reinits () const

double	average_time_residual_assembly ()

uint	num_residuals () const

double	average_time_jacobian_assembly ()

uint	num_jacobians () const

Public Member Functions inherited from DiFfRG::FEMAssembler< Discretization_, Model_ >
	FEMAssembler (Discretization &discretization, Model &model, const JSONValue &json)

virtual IndexSet	get_differential_indices () const override
	Obtain the dofs which contain time derivatives.

virtual void	attach_data_output (DataOutput< dim, VectorType > &data_out, const VectorType &solution, const VectorType &variables, const VectorType &dt_solution=VectorType(), const VectorType &residual=VectorType()) override

const auto &	get_discretization () const

auto &	get_discretization ()

virtual void	set_time (double t) override
	Set the current time. The assembler should usually just forward this to the numerical model.

virtual void	refinement_indicator (Vector< double > &, const VectorType &)=0

virtual void	residual_variables (VectorType &residual, const VectorType &variables, const VectorType &spatial_solution) override

virtual void	jacobian_variables (FullMatrix< NumberType > &jacobian, const VectorType &variables, const VectorType &spatial_solution) override

void	readouts (DataOutput< dim, VectorType > &data_out, const VectorType &solution_global, const VectorType &variables) const

void	extract (std::array< NumberType, Components::count_extractors()> &data, const VectorType &solution_global, const VectorType &variables, bool search_EoM, bool set_EoM, bool postprocess) const

bool	jacobian_extractors (FullMatrix< NumberType > &extractor_jacobian, const VectorType &solution_global, const VectorType &variables)

double	average_time_variable_residual_assembly ()

uint	num_variable_residuals () const

double	average_time_variable_jacobian_assembly ()

uint	num_variable_jacobians () const

Public Member Functions inherited from DiFfRG::AbstractAssembler< Discretization_::VectorType, Discretization_::SparseMatrixType, Discretization_::dim >
virtual void	attach_data_output (DataOutput< dim, VectorType > &data_out, const VectorType &solution, const VectorType &variables=VectorType(), const VectorType &dt_solution=VectorType(), const VectorType &residual=VectorType())=0
	Attach any data output to the DataOutput object provided. This can be used to extract additional data from the solution and write it to the output file. This includes both derivatives and other spatial functions, as well as single values that can be appended to the .csv file.

virtual void	reinit_vector (VectorType &vector) const=0
	Reinitialize an arbitrary vector so that it has the correct size and structure.

virtual void	residual_variables (VectorType &residual, const VectorType &variables, const VectorType &spatial_solution)
	When coupling the spatial discretization to additional variables, this function should calculate the residual for the additional variables.

virtual void	jacobian_variables (FullMatrix< NumberType > &jacobian, const VectorType &variables, const VectorType &spatial_solution)
	When coupling the spatial discretization to additional variables, this function should calculate the jacobian for the additional variables.

void	mass (VectorType &mass, const VectorType &solution_global, NumberType weight)
	Calculates the mass \(m_i(u)\) for an ODE.

virtual void	mass (VectorType &mass, const VectorType &solution_global, const VectorType &solution_global_dot, NumberType weight)=0
	Calculates the mass \(m(u, \partial_t u)\) for a DAE.

void	residual (VectorType &residual, const VectorType &solution_global, NumberType weight, NumberType weight_mass, const VectorType &variables=VectorType())
	Calculates the residual for an ODE.

virtual void	residual (VectorType &residual, const VectorType &solution_global, NumberType weight, const VectorType &solution_global_dot, NumberType weight_mass, const VectorType &variables=VectorType())=0
	Calculates the residual for a DAE.

void	jacobian_mass (SparseMatrixType &jacobian, const VectorType &solution_global, NumberType mass_weight=1.)
	Calculates the jacobian of the mass function for an ODE.

virtual void	jacobian_mass (SparseMatrixType &jacobian, const VectorType &solution_global, const VectorType &solution_global_dot, NumberType alpha=1., NumberType beta=1.)=0
	Calculates the jacobian of the mass function for a DAE.

void	jacobian (SparseMatrixType &jacobian, const VectorType &solution_global, NumberType weight, NumberType mass_weight, const VectorType &variables=VectorType())
	Calculates the jacobian of the residual function for an ODE.

virtual void	jacobian (SparseMatrixType &jacobian, const VectorType &solution_global, NumberType weight, const VectorType &solution_global_dot, NumberType alpha, NumberType beta, const VectorType &variables=VectorType())=0
	Calculates the jacobian of the residual function for a DAE.

Static Public Attributes
static constexpr uint	n_components = Components::count_fe_functions(0)

static constexpr uint	dim = Discretization::dim

Static Public Attributes inherited from DiFfRG::FEMAssembler< Discretization_, Model_ >
static constexpr uint	dim = Discretization::dim

Protected Attributes
QGauss< dim >	quadrature

QGauss< dim - 1 >	quadrature_face

SparsityPattern	sparsity_pattern_mass

SparsityPattern	sparsity_pattern_jacobian

SparseMatrix< NumberType >	mass_matrix

std::vector< double >	timings_reinit

std::vector< double >	timings_residual

std::vector< double >	timings_jacobian

Discretization &	discretization

const DoFHandler< dim > &	dof_handler

const FiniteElement< dim > &	fe

const Mapping< dim > &	mapping

Model &	model

uint	batch_size

uint	threads

std::vector< types::global_dof_index >	extractor_dof_indices

Protected Attributes inherited from DiFfRG::FEMAssembler< Discretization_, Model_ >
Discretization &	discretization

Model &	model

const FiniteElement< dim > &	fe

const DoFHandler< dim > &	dof_handler

const Mapping< dim > &	mapping

uint	threads

uint	batch_size

DoFHandler< dim >::cell_iterator	EoM_cell

DoFHandler< dim >::cell_iterator	old_EoM_cell

const double	EoM_abs_tol

const uint	EoM_max_iter

Point< dim >	EoM

FullMatrix< NumberType >	extractor_jacobian

FullMatrix< NumberType >	extractor_jacobian_u

FullMatrix< NumberType >	extractor_jacobian_du

FullMatrix< NumberType >	extractor_jacobian_ddu

std::vector< types::global_dof_index >	extractor_dof_indices

std::vector< double >	timings_variable_residual

std::vector< double >	timings_variable_jacobian

Private Types
using	Base = FEMAssembler<Discretization_, Model_>

Additional Inherited Members
Static Protected Member Functions inherited from DiFfRG::FEMAssembler< Discretization_, Model_ >
template<typename... T>
static constexpr auto	v_tie (T &&...t)

template<typename... T>
static constexpr auto	e_tie (T &&...t)

Static Protected Attributes inherited from DiFfRG::FEMAssembler< Discretization_, Model_ >
static constexpr int	nothing = 0

Detailed Description

template<typename Discretization_, typename Model_>
class DiFfRG::DG::Assembler< Discretization_, Model_ >

The basic assembler that can be used for any standard DG scheme with flux and source.

Template Parameters

Model The model class which contains the physical equations.

Member Typedef Documentation

◆ Base

template<typename Discretization_ , typename Model_ >

using DiFfRG::DG::Assembler< Discretization_, Model_ >::Base = FEMAssembler<Discretization_, Model_>

private

◆ Components

template<typename Discretization_ , typename Model_ >

using DiFfRG::DG::Assembler< Discretization_, Model_ >::Components = typename Discretization::Components

◆ Discretization

template<typename Discretization_ , typename Model_ >

using DiFfRG::DG::Assembler< Discretization_, Model_ >::Discretization = Discretization_

◆ Model

template<typename Discretization_ , typename Model_ >

using DiFfRG::DG::Assembler< Discretization_, Model_ >::Model = Model_

◆ NumberType

template<typename Discretization_ , typename Model_ >

using DiFfRG::DG::Assembler< Discretization_, Model_ >::NumberType = typename Discretization::NumberType

◆ VectorType

template<typename Discretization_ , typename Model_ >

using DiFfRG::DG::Assembler< Discretization_, Model_ >::VectorType = typename Discretization::VectorType

Constructor & Destructor Documentation

◆ Assembler()

template<typename Discretization_ , typename Model_ >

DiFfRG::DG::Assembler< Discretization_, Model_ >::Assembler	(	Discretization &	discretization,
		Model &	model,
		const JSONValue &	json )

inline

Member Function Documentation

◆ average_time_jacobian_assembly()

template<typename Discretization_ , typename Model_ >

double DiFfRG::DG::Assembler< Discretization_, Model_ >::average_time_jacobian_assembly ( )

inline

◆ average_time_reinit()

template<typename Discretization_ , typename Model_ >

double DiFfRG::DG::Assembler< Discretization_, Model_ >::average_time_reinit ( ) const

inline

◆ average_time_residual_assembly()

template<typename Discretization_ , typename Model_ >

double DiFfRG::DG::Assembler< Discretization_, Model_ >::average_time_residual_assembly ( )

inline

◆ get_mass_matrix()

template<typename Discretization_ , typename Model_ >

virtual const SparseMatrix< NumberType > & DiFfRG::DG::Assembler< Discretization_, Model_ >::get_mass_matrix ( ) const

inlineoverridevirtual

Obtain the mass matrix.

Returns: const SparseMatrixType& The mass matrix

Implements DiFfRG::AbstractAssembler< Discretization_::VectorType, Discretization_::SparseMatrixType, Discretization_::dim >.

◆ get_sparsity_pattern_jacobian()

template<typename Discretization_ , typename Model_ >

virtual const SparsityPattern & DiFfRG::DG::Assembler< Discretization_, Model_ >::get_sparsity_pattern_jacobian ( ) const

inlineoverridevirtual

Obtain the sparsity pattern of the jacobian matrix.

Returns: const SparsityPattern<VectorType>& The sparsity pattern of the jacobian matrix

Implements DiFfRG::AbstractAssembler< Discretization_::VectorType, Discretization_::SparseMatrixType, Discretization_::dim >.

◆ jacobian()

template<typename Discretization_ , typename Model_ >

virtual void DiFfRG::DG::Assembler< Discretization_, Model_ >::jacobian	(	SparseMatrix< NumberType > &	jacobian,
		const VectorType &	solution_global,
		NumberType	weight,
		const VectorType &	solution_global_dot,
		NumberType	alpha,
		NumberType	beta,
		const VectorType &	variables = VectorType() )

inlineoverridevirtual

◆ jacobian_mass()

template<typename Discretization_ , typename Model_ >

virtual void DiFfRG::DG::Assembler< Discretization_, Model_ >::jacobian_mass	(	SparseMatrix< NumberType > &	jacobian,
		const VectorType &	solution_global,
		const VectorType &	solution_global_dot,
		NumberType	alpha = 1.,
		NumberType	beta = 1. )

inlineoverridevirtual

◆ log()

template<typename Discretization_ , typename Model_ >

void DiFfRG::DG::Assembler< Discretization_, Model_ >::log ( const std::string logger )

inline

◆ mass()

template<typename Discretization_ , typename Model_ >

virtual void DiFfRG::DG::Assembler< Discretization_, Model_ >::mass	(	VectorType &	mass,
		const VectorType &	solution_global,
		const VectorType &	solution_global_dot,
		NumberType	weight )

inlineoverridevirtual

◆ num_jacobians()

template<typename Discretization_ , typename Model_ >

uint DiFfRG::DG::Assembler< Discretization_, Model_ >::num_jacobians ( ) const

inline

◆ num_reinits()

template<typename Discretization_ , typename Model_ >

uint DiFfRG::DG::Assembler< Discretization_, Model_ >::num_reinits ( ) const

inline

◆ num_residuals()

template<typename Discretization_ , typename Model_ >

uint DiFfRG::DG::Assembler< Discretization_, Model_ >::num_residuals ( ) const

inline

◆ rebuild_jacobian_sparsity()

template<typename Discretization_ , typename Model_ >

virtual void DiFfRG::DG::Assembler< Discretization_, Model_ >::rebuild_jacobian_sparsity ( )

inlineoverridevirtual

Implements DiFfRG::FEMAssembler< Discretization_, Model_ >.

◆ refinement_indicator()

template<typename Discretization_ , typename Model_ >

virtual void DiFfRG::DG::Assembler< Discretization_, Model_ >::refinement_indicator	(	Vector< double > &	indicator,
		const VectorType &	solution_global )

inlineoverridevirtual

refinement indicator for adaptivity. Calls the model's cell_indicator and face_indicator functions.

Parameters

indicator	The vector to store the refinement indicator in.
solution_global	The global solution vector.

◆ reinit()

template<typename Discretization_ , typename Model_ >

virtual void DiFfRG::DG::Assembler< Discretization_, Model_ >::reinit ( )

inlineoverridevirtual

Reinitialize the assembler. This is necessary if the mesh has changed, e.g. after a mesh refinement.

Reimplemented from DiFfRG::FEMAssembler< Discretization_, Model_ >.

◆ reinit_vector()

template<typename Discretization_ , typename Model_ >

virtual void DiFfRG::DG::Assembler< Discretization_, Model_ >::reinit_vector ( VectorType & vec ) const

inlineoverridevirtual

◆ residual()

template<typename Discretization_ , typename Model_ >

virtual void DiFfRG::DG::Assembler< Discretization_, Model_ >::residual	(	VectorType &	residual,
		const VectorType &	solution_global,
		NumberType	weight,
		const VectorType &	solution_global_dot,
		NumberType	weight_mass,
		const VectorType &	variables = VectorType() )

inlineoverridevirtual

Member Data Documentation

◆ batch_size

template<typename Discretization_ , typename Model_ >

uint DiFfRG::FEMAssembler< Discretization_, Model_ >::batch_size

protected

◆ dim

template<typename Discretization_ , typename Model_ >

uint DiFfRG::DG::Assembler< Discretization_, Model_ >::dim = Discretization::dim

staticconstexpr

◆ discretization

template<typename Discretization_ , typename Model_ >

Discretization& DiFfRG::FEMAssembler< Discretization_, Model_ >::discretization

protected

◆ dof_handler

template<typename Discretization_ , typename Model_ >

const DoFHandler<dim>& DiFfRG::FEMAssembler< Discretization_, Model_ >::dof_handler

protected

◆ extractor_dof_indices

template<typename Discretization_ , typename Model_ >

std::vector<types::global_dof_index> DiFfRG::FEMAssembler< Discretization_, Model_ >::extractor_dof_indices

protected

◆ fe

template<typename Discretization_ , typename Model_ >

const FiniteElement<dim>& DiFfRG::FEMAssembler< Discretization_, Model_ >::fe

protected

◆ mapping

template<typename Discretization_ , typename Model_ >

const Mapping<dim>& DiFfRG::FEMAssembler< Discretization_, Model_ >::mapping

protected

◆ mass_matrix

template<typename Discretization_ , typename Model_ >

SparseMatrix<NumberType> DiFfRG::DG::Assembler< Discretization_, Model_ >::mass_matrix

protected

◆ model

template<typename Discretization_ , typename Model_ >

Model& DiFfRG::FEMAssembler< Discretization_, Model_ >::model

protected

◆ n_components

template<typename Discretization_ , typename Model_ >

uint DiFfRG::DG::Assembler< Discretization_, Model_ >::n_components = Components::count_fe_functions(0)

staticconstexpr

◆ quadrature

template<typename Discretization_ , typename Model_ >

QGauss<dim> DiFfRG::DG::Assembler< Discretization_, Model_ >::quadrature

protected

◆ quadrature_face

template<typename Discretization_ , typename Model_ >

QGauss<dim - 1> DiFfRG::DG::Assembler< Discretization_, Model_ >::quadrature_face

protected

◆ sparsity_pattern_jacobian

template<typename Discretization_ , typename Model_ >

SparsityPattern DiFfRG::DG::Assembler< Discretization_, Model_ >::sparsity_pattern_jacobian

protected

◆ sparsity_pattern_mass

template<typename Discretization_ , typename Model_ >

SparsityPattern DiFfRG::DG::Assembler< Discretization_, Model_ >::sparsity_pattern_mass

protected

◆ threads

template<typename Discretization_ , typename Model_ >

uint DiFfRG::FEMAssembler< Discretization_, Model_ >::threads

protected

◆ timings_jacobian

template<typename Discretization_ , typename Model_ >

std::vector<double> DiFfRG::DG::Assembler< Discretization_, Model_ >::timings_jacobian

protected

◆ timings_reinit

template<typename Discretization_ , typename Model_ >

std::vector<double> DiFfRG::DG::Assembler< Discretization_, Model_ >::timings_reinit

protected

◆ timings_residual

template<typename Discretization_ , typename Model_ >

std::vector<double> DiFfRG::DG::Assembler< Discretization_, Model_ >::timings_residual

protected

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

/home/runner/work/DiFfRG/DiFfRG/DiFfRG/include/DiFfRG/discretization/FEM/assembler/dg.hh

Public Types

Public Member Functions

Static Public Attributes

Protected Attributes

Private Types

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Base

◆ Components

◆ Discretization

◆ Model

◆ NumberType

◆ VectorType

Constructor & Destructor Documentation

◆ Assembler()

Member Function Documentation

◆ average_time_jacobian_assembly()

◆ average_time_reinit()

◆ average_time_residual_assembly()

◆ get_mass_matrix()

◆ get_sparsity_pattern_jacobian()

◆ jacobian()

◆ jacobian_mass()

◆ log()

◆ mass()

◆ num_jacobians()

◆ num_reinits()

◆ num_residuals()

◆ rebuild_jacobian_sparsity()

◆ refinement_indicator()

◆ reinit()

◆ reinit_vector()

◆ residual()

Member Data Documentation

◆ batch_size

◆ dim

◆ discretization

◆ dof_handler

◆ extractor_dof_indices

◆ fe

◆ mapping

◆ mass_matrix

◆ model

◆ n_components

◆ quadrature

◆ quadrature_face

◆ sparsity_pattern_jacobian

◆ sparsity_pattern_mass

◆ threads

◆ timings_jacobian

◆ timings_reinit

◆ timings_residual