This class is used to express the local action of a general nonlinear finite element operator. In addition it may provide the capability to assemble the local gradient operator and to compute the local energy. More...

#include <nonlininteg.hpp>

Inheritance diagram for mfem::NonlinearFormIntegrator:

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Collaboration diagram for mfem::NonlinearFormIntegrator:

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Public Member Functions
void	SetIntRule (const IntegrationRule *ir)
	Prescribe a fixed IntegrationRule to use (when ir != NULL) or let the integrator choose (when ir == NULL). More...

void	SetIntegrationRule (const IntegrationRule &irule)
	Prescribe a fixed IntegrationRule to use. More...

virtual void	AssembleElementVector (const FiniteElement &el, ElementTransformation &Tr, const Vector &elfun, Vector &elvect)
	Perform the local action of the NonlinearFormIntegrator. More...

virtual void	AssembleFaceVector (const FiniteElement &el1, const FiniteElement &el2, FaceElementTransformations &Tr, const Vector &elfun, Vector &elvect)
	Perform the local action of the NonlinearFormIntegrator resulting from a face integral term. More...

virtual void	AssembleElementGrad (const FiniteElement &el, ElementTransformation &Tr, const Vector &elfun, DenseMatrix &elmat)
	Assemble the local gradient matrix. More...

virtual void	AssembleFaceGrad (const FiniteElement &el1, const FiniteElement &el2, FaceElementTransformations &Tr, const Vector &elfun, DenseMatrix &elmat)
	Assemble the local action of the gradient of the NonlinearFormIntegrator resulting from a face integral term. More...

virtual double	GetElementEnergy (const FiniteElement &el, ElementTransformation &Tr, const Vector &elfun)
	Compute the local energy. More...

virtual void	AssemblePA (const FiniteElementSpace &fes)
	Method defining partial assembly. More...

virtual void	AssemblePA (const FiniteElementSpace &trial_fes, const FiniteElementSpace &test_fes)

virtual void	AddMultPA (const Vector &x, Vector &y) const
	Method for partially assembled action. More...

virtual	~NonlinearFormIntegrator ()

Protected Member Functions
	NonlinearFormIntegrator (const IntegrationRule *ir=NULL)

Protected Attributes
const IntegrationRule *	IntRule

Detailed Description

This class is used to express the local action of a general nonlinear finite element operator. In addition it may provide the capability to assemble the local gradient operator and to compute the local energy.

Definition at line 26 of file nonlininteg.hpp.

Constructor & Destructor Documentation

mfem::NonlinearFormIntegrator::NonlinearFormIntegrator ( const IntegrationRule * ir = NULL )

inlineprotected

Definition at line 31 of file nonlininteg.hpp.

virtual mfem::NonlinearFormIntegrator::~NonlinearFormIntegrator ( )

inlinevirtual

Definition at line 91 of file nonlininteg.hpp.

Member Function Documentation

void mfem::NonlinearFormIntegrator::AddMultPA	(	const Vector &	x,
		Vector &	y
	)		const

virtual

Method for partially assembled action.

Perform the action of integrator on the input x and add the result to the output y. Both x and y are E-vectors, i.e. they represent the element-wise discontinuous version of the FE space.

This method can be called only after the method AssemblePA() has been called.

Reimplemented in mfem::DGTraceIntegrator, mfem::VectorDiffusionIntegrator, mfem::DivDivIntegrator, mfem::VectorDivergenceIntegrator, mfem::VectorFEMassIntegrator, mfem::CurlCurlIntegrator, mfem::VectorFEDivergenceIntegrator, mfem::VectorMassIntegrator, mfem::ConvectionIntegrator, mfem::MassIntegrator, mfem::DiffusionIntegrator, mfem::GradientIntegrator, mfem::MixedVectorWeakCurlIntegrator, mfem::MixedVectorCurlIntegrator, mfem::MixedVectorGradientIntegrator, mfem::VectorConvectionNLFIntegrator, mfem::TransposeIntegrator, and mfem::BilinearFormIntegrator.

Definition at line 31 of file nonlininteg.cpp.

void mfem::NonlinearFormIntegrator::AssembleElementGrad	(	const FiniteElement &	el,
		ElementTransformation &	Tr,
		const Vector &	elfun,
		DenseMatrix &	elmat
	)

virtual

Assemble the local gradient matrix.

Reimplemented in mfem::TMOPComboIntegrator, mfem::TMOP_Integrator, mfem::VectorConvectionNLFIntegrator, mfem::HyperelasticNLFIntegrator, and mfem::BilinearFormIntegrator.

Definition at line 53 of file nonlininteg.cpp.

void mfem::NonlinearFormIntegrator::AssembleElementVector	(	const FiniteElement &	el,
		ElementTransformation &	Tr,
		const Vector &	elfun,
		Vector &	elvect
	)

virtual

Perform the local action of the NonlinearFormIntegrator.

Reimplemented in mfem::VectorDiffusionIntegrator, mfem::DiffusionIntegrator, mfem::TMOPComboIntegrator, mfem::TMOP_Integrator, mfem::VectorConvectionNLFIntegrator, mfem::HyperelasticNLFIntegrator, and mfem::BilinearFormIntegrator.

Definition at line 37 of file nonlininteg.cpp.

void mfem::NonlinearFormIntegrator::AssembleFaceGrad	(	const FiniteElement &	el1,
		const FiniteElement &	el2,
		FaceElementTransformations &	Tr,
		const Vector &	elfun,
		DenseMatrix &	elmat
	)

virtual

Assemble the local action of the gradient of the NonlinearFormIntegrator resulting from a face integral term.

Reimplemented in mfem::BilinearFormIntegrator.

Definition at line 61 of file nonlininteg.cpp.

void mfem::NonlinearFormIntegrator::AssembleFaceVector	(	const FiniteElement &	el1,
		const FiniteElement &	el2,
		FaceElementTransformations &	Tr,
		const Vector &	elfun,
		Vector &	elvect
	)

virtual

Perform the local action of the NonlinearFormIntegrator resulting from a face integral term.

Reimplemented in mfem::BilinearFormIntegrator, and FaceIntegrator.

Definition at line 45 of file nonlininteg.cpp.

void mfem::NonlinearFormIntegrator::AssemblePA ( const FiniteElementSpace & fes )

virtual

Method defining partial assembly.

The result of the partial assembly is stored internally so that it can be used later in the methods AddMultPA().

Reimplemented in mfem::VectorDiffusionIntegrator, mfem::DivDivIntegrator, mfem::VectorFEMassIntegrator, mfem::CurlCurlIntegrator, mfem::VectorMassIntegrator, mfem::ConvectionIntegrator, mfem::MassIntegrator, mfem::DiffusionIntegrator, mfem::VectorConvectionNLFIntegrator, mfem::TransposeIntegrator, and mfem::BilinearFormIntegrator.

Definition at line 18 of file nonlininteg.cpp.

void mfem::NonlinearFormIntegrator::AssemblePA	(	const FiniteElementSpace &	trial_fes,
		const FiniteElementSpace &	test_fes
	)

virtual

The result of the partial assembly is stored internally so that it can be used later in the methods AddMultPA(). Used with BilinearFormIntegrators that have different spaces.

Reimplemented in mfem::VectorDivergenceIntegrator, mfem::VectorFEMassIntegrator, mfem::VectorFEDivergenceIntegrator, mfem::GradientIntegrator, mfem::MixedVectorWeakCurlIntegrator, mfem::MixedVectorCurlIntegrator, mfem::MixedVectorGradientIntegrator, and mfem::BilinearFormIntegrator.

Definition at line 24 of file nonlininteg.cpp.

double mfem::NonlinearFormIntegrator::GetElementEnergy	(	const FiniteElement &	el,
		ElementTransformation &	Tr,
		const Vector &	elfun
	)

virtual

Compute the local energy.

Reimplemented in mfem::VectorCurlCurlIntegrator, mfem::TMOPComboIntegrator, mfem::TMOP_Integrator, and mfem::HyperelasticNLFIntegrator.

Definition at line 70 of file nonlininteg.cpp.

void mfem::NonlinearFormIntegrator::SetIntegrationRule ( const IntegrationRule & irule )

inline

Prescribe a fixed IntegrationRule to use.

Definition at line 40 of file nonlininteg.hpp.

void mfem::NonlinearFormIntegrator::SetIntRule ( const IntegrationRule * ir )

inline

Prescribe a fixed IntegrationRule to use (when ir != NULL) or let the integrator choose (when ir == NULL).

Definition at line 37 of file nonlininteg.hpp.

Member Data Documentation

const IntegrationRule* mfem::NonlinearFormIntegrator::IntRule

protected

Definition at line 29 of file nonlininteg.hpp.

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

fem/nonlininteg.hpp
fem/nonlininteg.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation