MFEM  v4.4.0
Finite element discretization library
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Pages
Public Member Functions | Protected Attributes | List of all members
mfem::VectorDiffusionIntegrator Class Reference

#include <bilininteg.hpp>

Inheritance diagram for mfem::VectorDiffusionIntegrator:
[legend]
Collaboration diagram for mfem::VectorDiffusionIntegrator:
[legend]

Public Member Functions

 VectorDiffusionIntegrator ()
 
 VectorDiffusionIntegrator (int vector_dimension)
 Integrator with unit coefficient for caller-specified vector dimension. More...
 
 VectorDiffusionIntegrator (Coefficient &q)
 
 VectorDiffusionIntegrator (Coefficient &q, const IntegrationRule *ir)
 
 VectorDiffusionIntegrator (Coefficient &q, int vector_dimension)
 Integrator with scalar coefficient for caller-specified vector dimension. More...
 
 VectorDiffusionIntegrator (VectorCoefficient &vq)
 Integrator with VectorCoefficient. The vector dimension of the FiniteElementSpace is assumed to be the same as the dimension of the Vector. More...
 
 VectorDiffusionIntegrator (MatrixCoefficient &mq)
 Integrator with MatrixCoefficient. The vector dimension of the FiniteElementSpace is assumed to be the same as the dimension of the Matrix. More...
 
virtual void AssembleElementMatrix (const FiniteElement &el, ElementTransformation &Trans, DenseMatrix &elmat)
 Given a particular Finite Element computes the element matrix elmat. More...
 
virtual void AssembleElementVector (const FiniteElement &el, ElementTransformation &Tr, const Vector &elfun, Vector &elvect)
 Perform the local action of the BilinearFormIntegrator. Note that the default implementation in the base class is general but not efficient. More...
 
virtual void AssemblePA (const FiniteElementSpace &fes)
 Method defining partial assembly. More...
 
virtual void AssembleMF (const FiniteElementSpace &fes)
 Method defining matrix-free assembly. More...
 
virtual void AssembleDiagonalPA (Vector &diag)
 Assemble diagonal and add it to Vector diag. More...
 
virtual void AssembleDiagonalMF (Vector &diag)
 Assemble diagonal and add it to Vector diag. More...
 
virtual void AddMultPA (const Vector &x, Vector &y) const
 Method for partially assembled action. More...
 
virtual void AddMultMF (const Vector &x, Vector &y) const
 
bool SupportsCeed () const
 Indicates whether this integrator can use a Ceed backend. More...
 
- Public Member Functions inherited from mfem::BilinearFormIntegrator
virtual void AssemblePA (const FiniteElementSpace &trial_fes, const FiniteElementSpace &test_fes)
 
virtual void AssemblePAInteriorFaces (const FiniteElementSpace &fes)
 
virtual void AssemblePABoundaryFaces (const FiniteElementSpace &fes)
 
virtual void AssembleDiagonalPA_ADAt (const Vector &D, Vector &diag)
 Assemble diagonal of ADA^T (A is this integrator) and add it to diag. More...
 
virtual void AddMultTransposePA (const Vector &x, Vector &y) const
 Method for partially assembled transposed action. More...
 
virtual void AssembleEA (const FiniteElementSpace &fes, Vector &emat, const bool add=true)
 Method defining element assembly. More...
 
virtual void AddMultTransposeMF (const Vector &x, Vector &y) const
 
virtual void AssembleEAInteriorFaces (const FiniteElementSpace &fes, Vector &ea_data_int, Vector &ea_data_ext, const bool add=true)
 
virtual void AssembleEABoundaryFaces (const FiniteElementSpace &fes, Vector &ea_data_bdr, const bool add=true)
 
virtual void AssembleElementMatrix2 (const FiniteElement &trial_fe, const FiniteElement &test_fe, ElementTransformation &Trans, DenseMatrix &elmat)
 
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 AssembleFaceVector (const FiniteElement &el1, const FiniteElement &el2, FaceElementTransformations &Tr, const Vector &elfun, Vector &elvect)
 Perform the local action of the BilinearFormIntegrator resulting from a face integral term. Note that the default implementation in the base class is general but not efficient. 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 void ComputeElementFlux (const FiniteElement &el, ElementTransformation &Trans, Vector &u, const FiniteElement &fluxelem, Vector &flux, bool with_coef=true)
 Virtual method required for Zienkiewicz-Zhu type error estimators. More...
 
virtual double ComputeFluxEnergy (const FiniteElement &fluxelem, ElementTransformation &Trans, Vector &flux, Vector *d_energy=NULL)
 Virtual method required for Zienkiewicz-Zhu type error estimators. More...
 
virtual ~BilinearFormIntegrator ()
 
- Public Member Functions inherited from mfem::NonlinearFormIntegrator
virtual 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 &ir)
 Prescribe a fixed IntegrationRule to use. More...
 
void SetPAMemoryType (MemoryType mt)
 
const IntegrationRuleGetIntegrationRule () const
 Get the integration rule of the integrator (possibly NULL). More...
 
virtual double GetElementEnergy (const FiniteElement &el, ElementTransformation &Tr, const Vector &elfun)
 Compute the local energy. More...
 
virtual void AssembleGradPA (const Vector &x, const FiniteElementSpace &fes)
 Prepare the integrator for partial assembly (PA) gradient evaluations on the given FE space fes at the state x. More...
 
virtual double GetLocalStateEnergyPA (const Vector &x) const
 Compute the local (to the MPI rank) energy with partial assembly. More...
 
virtual void AddMultGradPA (const Vector &x, Vector &y) const
 Method for partially assembled gradient action. More...
 
virtual void AssembleGradDiagonalPA (Vector &diag) const
 Method for computing the diagonal of the gradient with partial assembly. More...
 
ceed::Operator & GetCeedOp ()
 
virtual ~NonlinearFormIntegrator ()
 

Protected Attributes

CoefficientQ = NULL
 
VectorCoefficientVQ = NULL
 
MatrixCoefficientMQ = NULL
 
const DofToQuadmaps
 Not owned. More...
 
const GeometricFactorsgeom
 Not owned. More...
 
int dim
 
int sdim
 
int ne
 
int dofs1D
 
int quad1D
 
Vector pa_data
 
- Protected Attributes inherited from mfem::NonlinearFormIntegrator
const IntegrationRuleIntRule
 
ceed::Operator * ceedOp
 
MemoryType pa_mt = MemoryType::DEFAULT
 

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)
 

Detailed Description

Integrator for

(Q grad u, grad v) = sum_i (Q grad u_i, grad v_i) e_i e_i^T

for vector FE spaces, where e_i is the unit vector in the i-th direction. The resulting local element matrix is square, of size vdim*dof , where vdim is the vector dimension space and dof is the local degrees of freedom. The integrator is not aware of the true vector dimension and must use VectorCoefficient, MatrixCoefficient, or a caller-specified value to determine the vector space. For a scalar coefficient, the caller may manually specify the vector dimension or the vector dimension is assumed to be the spatial dimension (i.e. 2-dimension or 3-dimension).

Definition at line 2754 of file bilininteg.hpp.

Constructor & Destructor Documentation

mfem::VectorDiffusionIntegrator::VectorDiffusionIntegrator ( )
inline

Definition at line 2774 of file bilininteg.hpp.

mfem::VectorDiffusionIntegrator::VectorDiffusionIntegrator ( int  vector_dimension)
inline

Integrator with unit coefficient for caller-specified vector dimension.

If the vector dimension does not match the true dimension of the space, the resulting element matrix will be mathematically invalid.

Definition at line 2781 of file bilininteg.hpp.

mfem::VectorDiffusionIntegrator::VectorDiffusionIntegrator ( Coefficient q)
inline

Definition at line 2784 of file bilininteg.hpp.

mfem::VectorDiffusionIntegrator::VectorDiffusionIntegrator ( Coefficient q,
const IntegrationRule ir 
)
inline

Definition at line 2787 of file bilininteg.hpp.

mfem::VectorDiffusionIntegrator::VectorDiffusionIntegrator ( Coefficient q,
int  vector_dimension 
)
inline

Integrator with scalar coefficient for caller-specified vector dimension.

The element matrix is block-diagonal with vdim copies of the element matrix integrated with the Coefficient.

If the vector dimension does not match the true dimension of the space, the resulting element matrix will be mathematically invalid.

Definition at line 2798 of file bilininteg.hpp.

mfem::VectorDiffusionIntegrator::VectorDiffusionIntegrator ( VectorCoefficient vq)
inline

Integrator with VectorCoefficient. The vector dimension of the FiniteElementSpace is assumed to be the same as the dimension of the Vector.

The element matrix is block-diagonal and each block is integrated with coefficient q_i.

If the vector dimension does not match the true dimension of the space, the resulting element matrix will be mathematically invalid.

Definition at line 2810 of file bilininteg.hpp.

mfem::VectorDiffusionIntegrator::VectorDiffusionIntegrator ( MatrixCoefficient mq)
inline

Integrator with MatrixCoefficient. The vector dimension of the FiniteElementSpace is assumed to be the same as the dimension of the Matrix.

The element matrix is populated in each block. Each block is integrated with coefficient q_ij.

If the vector dimension does not match the true dimension of the space, the resulting element matrix will be mathematically invalid.

Definition at line 2822 of file bilininteg.hpp.

Member Function Documentation

void mfem::VectorDiffusionIntegrator::AddMultMF ( const Vector x,
Vector y 
) const
virtual

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 AssembleMF() has been called.

Reimplemented from mfem::BilinearFormIntegrator.

Definition at line 40 of file bilininteg_vecdiffusion_mf.cpp.

void mfem::VectorDiffusionIntegrator::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 from mfem::BilinearFormIntegrator.

Definition at line 570 of file bilininteg_vecdiffusion.cpp.

void mfem::VectorDiffusionIntegrator::AssembleDiagonalMF ( Vector diag)
virtual

Assemble diagonal and add it to Vector diag.

Reimplemented from mfem::BilinearFormIntegrator.

Definition at line 53 of file bilininteg_vecdiffusion_mf.cpp.

void mfem::VectorDiffusionIntegrator::AssembleDiagonalPA ( Vector diag)
virtual

Assemble diagonal and add it to Vector diag.

Reimplemented from mfem::BilinearFormIntegrator.

Definition at line 797 of file bilininteg_vecdiffusion.cpp.

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

Given a particular Finite Element computes the element matrix elmat.

Reimplemented from mfem::BilinearFormIntegrator.

Definition at line 2587 of file bilininteg.cpp.

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

Perform the local action of the BilinearFormIntegrator. Note that the default implementation in the base class is general but not efficient.

Reimplemented from mfem::BilinearFormIntegrator.

Definition at line 2669 of file bilininteg.cpp.

void mfem::VectorDiffusionIntegrator::AssembleMF ( const FiniteElementSpace fes)
virtual

Method defining matrix-free assembly.

Used with BilinearFormIntegrators that have different spaces.The result of fully matrix-free assembly is stored internally so that it can be used later in the methods AddMultMF() and AddMultTransposeMF().

Reimplemented from mfem::BilinearFormIntegrator.

Definition at line 22 of file bilininteg_vecdiffusion_mf.cpp.

void mfem::VectorDiffusionIntegrator::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() and AddMultTransposePA().

Reimplemented from mfem::BilinearFormIntegrator.

Definition at line 142 of file bilininteg_vecdiffusion.cpp.

bool mfem::VectorDiffusionIntegrator::SupportsCeed ( ) const
inlinevirtual

Indicates whether this integrator can use a Ceed backend.

Reimplemented from mfem::NonlinearFormIntegrator.

Definition at line 2838 of file bilininteg.hpp.

Member Data Documentation

int mfem::VectorDiffusionIntegrator::dim
protected

Definition at line 2764 of file bilininteg.hpp.

int mfem::VectorDiffusionIntegrator::dofs1D
protected

Definition at line 2764 of file bilininteg.hpp.

const GeometricFactors* mfem::VectorDiffusionIntegrator::geom
protected

Not owned.

Definition at line 2763 of file bilininteg.hpp.

const DofToQuad* mfem::VectorDiffusionIntegrator::maps
protected

Not owned.

Definition at line 2762 of file bilininteg.hpp.

MatrixCoefficient* mfem::VectorDiffusionIntegrator::MQ = NULL
protected

Definition at line 2759 of file bilininteg.hpp.

int mfem::VectorDiffusionIntegrator::ne
protected

Definition at line 2764 of file bilininteg.hpp.

Vector mfem::VectorDiffusionIntegrator::pa_data
protected

Definition at line 2765 of file bilininteg.hpp.

Coefficient* mfem::VectorDiffusionIntegrator::Q = NULL
protected

Definition at line 2757 of file bilininteg.hpp.

int mfem::VectorDiffusionIntegrator::quad1D
protected

Definition at line 2764 of file bilininteg.hpp.

int mfem::VectorDiffusionIntegrator::sdim
protected

Definition at line 2764 of file bilininteg.hpp.

VectorCoefficient* mfem::VectorDiffusionIntegrator::VQ = NULL
protected

Definition at line 2758 of file bilininteg.hpp.


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