MFEM  v3.3.2
Finite element discretization library
Public Member Functions | List of all members
mfem::DiffusionIntegrator Class Reference

#include <bilininteg.hpp>

Inheritance diagram for mfem::DiffusionIntegrator:
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Collaboration diagram for mfem::DiffusionIntegrator:
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Public Member Functions

 DiffusionIntegrator ()
 Construct a diffusion integrator with coefficient Q = 1. More...
 
 DiffusionIntegrator (Coefficient &q)
 Construct a diffusion integrator with a scalar coefficient q. More...
 
 DiffusionIntegrator (MatrixCoefficient &q)
 Construct a diffusion integrator with a matrix coefficient q. More...
 
virtual void AssembleElementMatrix (const FiniteElement &el, ElementTransformation &Trans, DenseMatrix &elmat)
 
virtual void AssembleElementMatrix2 (const FiniteElement &trial_fe, const FiniteElement &test_fe, ElementTransformation &Trans, DenseMatrix &elmat)
 
virtual void AssembleElementVector (const FiniteElement &el, ElementTransformation &Tr, const Vector &elfun, Vector &elvect)
 Perform the local action of the BilinearFormIntegrator. More...
 
virtual void ComputeElementFlux (const FiniteElement &el, ElementTransformation &Trans, Vector &u, const FiniteElement &fluxelem, Vector &flux, int with_coef=1)
 
virtual double ComputeFluxEnergy (const FiniteElement &fluxelem, ElementTransformation &Trans, Vector &flux, Vector *d_energy=NULL)
 
- Public Member Functions inherited from mfem::BilinearFormIntegrator
virtual void AssembleFaceMatrix (const FiniteElement &el1, const FiniteElement &el2, FaceElementTransformations &Trans, DenseMatrix &elmat)
 
virtual void AssembleFaceMatrix (const FiniteElement &trial_face_fe, const FiniteElement &test_fe1, const FiniteElement &test_fe2, FaceElementTransformations &Trans, DenseMatrix &elmat)
 
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 ~BilinearFormIntegrator ()
 
- Public Member Functions inherited from mfem::NonlinearFormIntegrator
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 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 double GetElementEnergy (const FiniteElement &el, ElementTransformation &Tr, const Vector &elfun)
 Compute the local energy. More...
 
virtual ~NonlinearFormIntegrator ()
 

Additional Inherited Members

- Protected Member Functions inherited from mfem::BilinearFormIntegrator
 BilinearFormIntegrator (const IntegrationRule *ir=NULL)
 
- Protected Member Functions inherited from mfem::NonlinearFormIntegrator
 NonlinearFormIntegrator (const IntegrationRule *ir=NULL)
 
- Protected Attributes inherited from mfem::NonlinearFormIntegrator
const IntegrationRuleIntRule
 

Detailed Description

Class for integrating the bilinear form a(u,v) := (Q grad u, grad v) where Q can be a scalar or a matrix coefficient.

Definition at line 1579 of file bilininteg.hpp.

Constructor & Destructor Documentation

mfem::DiffusionIntegrator::DiffusionIntegrator ( )
inline

Construct a diffusion integrator with coefficient Q = 1.

Definition at line 1592 of file bilininteg.hpp.

mfem::DiffusionIntegrator::DiffusionIntegrator ( Coefficient q)
inline

Construct a diffusion integrator with a scalar coefficient q.

Definition at line 1595 of file bilininteg.hpp.

mfem::DiffusionIntegrator::DiffusionIntegrator ( MatrixCoefficient q)
inline

Construct a diffusion integrator with a matrix coefficient q.

Definition at line 1598 of file bilininteg.hpp.

Member Function Documentation

void mfem::DiffusionIntegrator::AssembleElementMatrix ( const FiniteElement el,
ElementTransformation Trans,
DenseMatrix elmat 
)
virtual

Given a particular Finite Element computes the element stiffness matrix elmat.

Reimplemented from mfem::BilinearFormIntegrator.

Definition at line 365 of file bilininteg.cpp.

void mfem::DiffusionIntegrator::AssembleElementMatrix2 ( const FiniteElement trial_fe,
const FiniteElement test_fe,
ElementTransformation Trans,
DenseMatrix elmat 
)
virtual

Given a trial and test Finite Element computes the element stiffness matrix elmat.

Reimplemented from mfem::BilinearFormIntegrator.

Definition at line 437 of file bilininteg.cpp.

void mfem::DiffusionIntegrator::AssembleElementVector ( const FiniteElement el,
ElementTransformation Tr,
const Vector elfun,
Vector elvect 
)
virtual

Perform the local action of the BilinearFormIntegrator.

Reimplemented from mfem::BilinearFormIntegrator.

Definition at line 517 of file bilininteg.cpp.

void mfem::DiffusionIntegrator::ComputeElementFlux ( const FiniteElement el,
ElementTransformation Trans,
Vector u,
const FiniteElement fluxelem,
Vector flux,
int  with_coef = 1 
)
virtual

Reimplemented from mfem::BilinearFormIntegrator.

Definition at line 595 of file bilininteg.cpp.

double mfem::DiffusionIntegrator::ComputeFluxEnergy ( const FiniteElement fluxelem,
ElementTransformation Trans,
Vector flux,
Vector d_energy = NULL 
)
virtual

Reimplemented from mfem::BilinearFormIntegrator.

Definition at line 653 of file bilininteg.cpp.


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