gridripper::amr1d::O4Dissipation Class Reference

Fourth order fourth derivative. More...

#include <Dissipation.h>

Inheritance diagram for gridripper::amr1d::O4Dissipation:

List of all members.

Public Member Functions
	O4Dissipation (const PDE &pde, int level)
	Creates fourth order dissipation operator.
void	addDissipation (const Grid &g, const PDE *pde, int i, tvalarray< GReal_t > &dfdt, int exclude) throw (IllegalArgumentException&)
	Adds fourth order dissipation term.
string	toString () const
	Gets a string representation.

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Detailed Description

Fourth order fourth derivative.

(For second order numerical methods.)

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Member Function Documentation

void gridripper::amr1d::O4Dissipation::addDissipation	(	const Grid &	g,
		const PDE *	pde,
		int	i,
		tvalarray< GReal_t > &	dfdt,
		int	exclude
	)			throw (IllegalArgumentException&) [virtual]

Adds fourth order dissipation term.

-sigma*f''''*dx^3 = -sigma*(f0 - 4*f1 + 6*f2 - 4*f3 + f4)/dx

Parameters:

	g	the grid
	pde	the PDE
	i	the grid point index
	dfdt	add the dissipation term to this time derivative
	exclude	binary flags corresponding to constant field components for which the dissipation term must NOT be added

Implements gridripper::amr1d::Dissipation.

string gridripper::amr1d::O4Dissipation::toString

(

)

const [inline, virtual]

Gets a string representation.

Returns:

the class name

Implements gridripper::amr1d::Dissipation.

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

• gridripper/amr1d/Dissipation.h