Galeri::FiniteElements::LinearProblem Class Reference

Basic implementation of scalar finite element problem. More...

#include <Galeri_LinearProblem.h>

Inheritance diagram for Galeri::FiniteElements::LinearProblem:

Collaboration diagram for Galeri::FiniteElements::LinearProblem:

List of all members.

Public Member Functions
	LinearProblem (const AbstractGrid &Grid, const AbstractVariational &Variational, Epetra_CrsMatrix &A, Epetra_MultiVector &LHS, Epetra_MultiVector &RHS)
	Constructor.
virtual	~LinearProblem ()
	Destructor.
void	Compute ()
	Fills the linear system matrix and the right-hand side, zeros out the solution.
void	ComputeNorms (Epetra_MultiVector &RowMatrixField, int(*ExactSolution)(double, double, double, double *), const bool verbose=true, double *Solution=0, double *Exact=0, double *Diff=0)
	Computes L2, semi-H1 and H1 norms.
virtual Epetra_RowMatrix &	A ()
	Returns a reference to the linear system matrix.
virtual Epetra_CrsMatrix &	CrsA ()
	Returns a reference to the linear system matrix as Epetra_CrsMatrix.
virtual Epetra_MultiVector &	RHS ()
	Returns a reference to the multi-vector of right-hand side.
virtual Epetra_MultiVector &	LHS ()
	Returns a reference to the multi-vector of starting solution.
virtual const AbstractGrid &	Grid () const
	Returns a reference to the grid object.
virtual const AbstractVariational &	Variational () const
	Returns a reference to the variational object.
	LinearProblem (const AbstractGrid &Grid, const AbstractVariational &Variational, Epetra_CrsMatrix &A, Epetra_MultiVector &LHS, Epetra_MultiVector &RHS)
	Constructor.
virtual	~LinearProblem ()
	Destructor.
void	Compute ()
	Fills the linear system matrix and the right-hand side, zeros out the solution.
void	ComputeNorms (Epetra_MultiVector &RowMatrixField, int(*ExactSolution)(double, double, double, double *), const bool verbose=true, double *Solution=0, double *Exact=0, double *Diff=0)
	Computes L2, semi-H1 and H1 norms.
virtual Epetra_RowMatrix &	A ()
	Returns a reference to the linear system matrix.
virtual Epetra_CrsMatrix &	CrsA ()
	Returns a reference to the linear system matrix as Epetra_CrsMatrix.
virtual Epetra_MultiVector &	RHS ()
	Returns a reference to the multi-vector of right-hand side.
virtual Epetra_MultiVector &	LHS ()
	Returns a reference to the multi-vector of starting solution.
virtual const AbstractGrid &	Grid () const
	Returns a reference to the grid object.
virtual const AbstractVariational &	Variational () const
	Returns a reference to the variational object.
Public Attributes
const AbstractGrid &	Grid_
const AbstractVariational &	Variational_
Epetra_CrsMatrix &	A_
Epetra_MultiVector &	LHS_
Epetra_MultiVector &	RHS_

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Detailed Description

Basic implementation of scalar finite element problem.

This class fill the linea system matrix (defined as an Epetra_CrsMatrix), the right-hand side (defined as an Epetra_MultiVector) and the starting solution (defined as a zero Epetra_MultiVector). In the current implementation, only one rhs is created.

Note:

Neumann boundary conditions are still to be fixed.

Author:

Marzio Sala, SNL 9214.

Date:

Last updated on Apr-05.

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Constructor & Destructor Documentation

Galeri::FiniteElements::LinearProblem::LinearProblem	(	const AbstractGrid &	Grid,
		const AbstractVariational &	Variational,
		Epetra_CrsMatrix &	A,
		Epetra_MultiVector &	LHS,
		Epetra_MultiVector &	RHS
	)		[inline]

Constructor.

Parameters:

Grid	- (In) Reference to an AbstractGrid object
Variational	- (In) Reference to an AbstractVariational object
A	- (In/Out) Epetra_CrsMatrix, whose Map is Grid().RowMap(), that will contain the linear system matrix.
LHS	- (In/Out) Epetra_MultiVector, whose Map is Grid().RowMap(), that will contain the starting solution (zero vector).
RHS	- (In/Out) Epetra_MultiVector, whose Map is Grid().RowMap(), that will contain the right-hand side.

Galeri::FiniteElements::LinearProblem::LinearProblem	(	const AbstractGrid &	Grid,
		const AbstractVariational &	Variational,
		Epetra_CrsMatrix &	A,
		Epetra_MultiVector &	LHS,
		Epetra_MultiVector &	RHS
	)		[inline]

Constructor.

Parameters:

Grid	- (In) Reference to an AbstractGrid object
Variational	- (In) Reference to an AbstractVariational object
A	- (In/Out) Epetra_CrsMatrix, whose Map is Grid().RowMap(), that will contain the linear system matrix.
LHS	- (In/Out) Epetra_MultiVector, whose Map is Grid().RowMap(), that will contain the starting solution (zero vector).
RHS	- (In/Out) Epetra_MultiVector, whose Map is Grid().RowMap(), that will contain the right-hand side.

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Member Function Documentation

void Galeri::FiniteElements::LinearProblem::ComputeNorms	(	Epetra_MultiVector &	RowMatrixField,
		int(*)(double, double, double, double *)	ExactSolution,
		const bool	verbose = true,
		double *	Solution = 0,
		double *	Exact = 0,
		double *	Diff = 0
	)		[inline, virtual]

Computes L2, semi-H1 and H1 norms.

double xq, yq, zq;

Implements Galeri::FiniteElements::AbstractProblem.

void Galeri::FiniteElements::LinearProblem::ComputeNorms	(	Epetra_MultiVector &	RowMatrixField,
		int(*)(double, double, double, double *)	ExactSolution,
		const bool	verbose = true,
		double *	Solution = 0,
		double *	Exact = 0,
		double *	Diff = 0
	)		[inline, virtual]

Computes L2, semi-H1 and H1 norms.

double xq, yq, zq;

Implements Galeri::FiniteElements::AbstractProblem.

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

• FiniteElements/Galeri_LinearProblem.h
• fem/Galeri_LinearProblem.h