fe::MassMatrix Class Reference

A class for mass matrix. More...

#include <massMatrix.h>

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Public Member Functions
	MassMatrix (inp::MassMatrixDeck *deck)
	Constructor. More...
void	print (int nt=0, int lvl=0) const
	Prints the information about the instance of the object. More...
std::string	printStr (int nt=0, int lvl=0) const
	Returns the string containing information about the instance of the object. More...

Private Attributes
util::SymMatrixFij	d_invM
	Inverse of the exact mass matrix. More...
std::vector< double >	d_invMDiag
	Inverse of a diagonal mass matrix stored as a vector.
inp::MassMatrixDeck *	d_massMatrixDeck_p
	Mass matrix deck. More...

Detailed Description

A class for mass matrix.

In this class we compute and store the inverse of a mass matrix. We can either compute the exact mass matrix and its inverse (using Blaze library) or we can use row-sum approximation (lumping) to approximate the matrix as diagonal matrix.

Order of quadrature approximation in computation of elements of mass matrix can be specified in the input file, see inp::MassMatrixDeck.

Note

This class is needed only when the discretization is of weak_finite_element type. This class requires data fe::Mesh::d_gMap and fe::Mesh::d_gInvMap.

Constructor & Destructor Documentation

MassMatrix()

fe::MassMatrix::MassMatrix ( inp::MassMatrixDeck *  deck )

explicit

Constructor.

Parameters

deck	Input deck which contains user-specified information

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Member Function Documentation

print()

void fe::MassMatrix::print ( int  nt = 0, int  lvl = 0  ) const

inline

Prints the information about the instance of the object.

Parameters

nt	Number of tabs to append before each line of string
lvl	Level of information sought (higher level means more information)

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printStr()

std::string fe::MassMatrix::printStr	(	int	nt = 0,
		int	lvl = 0
	)		const

Returns the string containing information about the instance of the object.

Parameters

nt	Number of tabs to append before each line of string
lvl	Level of information sought (higher level means more information)

Returns

string String containing information about this object

Referenced by print().

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Field Documentation

d_invM

util::SymMatrixFij fe::MassMatrix::d_invM

private

Inverse of the exact mass matrix.

We use Blaze matrix library with float data type.

d_massMatrixDeck_p

inp::MassMatrixDeck* fe::MassMatrix::d_massMatrixDeck_p

private

Mass matrix deck.

Deck contains information such as order of quadrature approximation and type of approximation to be used for mass matrix.

Referenced by MassMatrix().

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

• /root/project/src/fe/massMatrix.h
• /root/project/src/fe/massMatrix.cpp