MFEM  v3.1
Finite element discretization library
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mfem::DGTraceIntegrator Class Reference

#include <bilininteg.hpp>

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

 DGTraceIntegrator (VectorCoefficient &_u, double a, double b)
 Construct integrator with rho = 1. More...
 
 DGTraceIntegrator (Coefficient &_rho, VectorCoefficient &_u, double a, double b)
 
virtual void AssembleFaceMatrix (const FiniteElement &el1, const FiniteElement &el2, FaceElementTransformations &Trans, DenseMatrix &elmat)
 
- Public Member Functions inherited from mfem::BilinearFormIntegrator
virtual void AssembleElementMatrix (const FiniteElement &el, ElementTransformation &Trans, DenseMatrix &elmat)
 Given a particular Finite Element computes the element matrix elmat. More...
 
virtual void AssembleElementMatrix2 (const FiniteElement &trial_fe, const FiniteElement &test_fe, ElementTransformation &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 AssembleElementVector (const FiniteElement &el, ElementTransformation &Tr, const Vector &elfun, Vector &elvect)
 Perform the local action of the BilinearFormIntegrator. More...
 
virtual void AssembleElementGrad (const FiniteElement &el, ElementTransformation &Tr, const Vector &elfun, DenseMatrix &elmat)
 Assemble the local gradient matrix. 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)
 
void SetIntRule (const IntegrationRule *ir)
 
virtual ~BilinearFormIntegrator ()
 
- Public Member Functions inherited from mfem::NonlinearFormIntegrator
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 Attributes inherited from mfem::BilinearFormIntegrator
const IntegrationRuleIntRule
 

Detailed Description

Integrator for the DG form: alpha < rho_u (u.n) {v},[w] > + beta < rho_u |u.n| [v],[w] >, where v and w are the trial and test variables, respectively, and rho/u are given scalar/vector coefficients. The vector coefficient, u, is assumed to be continuous across the faces and when given the scalar coefficient, rho, is assumed to be discontinuous. The integrator uses the upwind value of rho, rho_u, which is value from the side into which the vector coefficient, u, points.

Definition at line 595 of file bilininteg.hpp.

Constructor & Destructor Documentation

mfem::DGTraceIntegrator::DGTraceIntegrator ( VectorCoefficient _u,
double  a,
double  b 
)
inline

Construct integrator with rho = 1.

Definition at line 606 of file bilininteg.hpp.

mfem::DGTraceIntegrator::DGTraceIntegrator ( Coefficient _rho,
VectorCoefficient _u,
double  a,
double  b 
)
inline

Definition at line 609 of file bilininteg.hpp.

Member Function Documentation

void mfem::DGTraceIntegrator::AssembleFaceMatrix ( const FiniteElement el1,
const FiniteElement el2,
FaceElementTransformations Trans,
DenseMatrix elmat 
)
virtual

Reimplemented from mfem::BilinearFormIntegrator.

Definition at line 1775 of file bilininteg.cpp.


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