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PolynomialDelta Class Reference

Instantiation of discrete delta function using a polynomial. More...

#include <PolynomialDelta.H>

Inheritance diagram for PolynomialDelta:

[legend]Collaboration diagram for PolynomialDelta:

[legend]List of all members.

Public Methods
	PolynomialDelta ()
	constructor
	PolynomialDelta (Real a_epsilon)
	constructor with radius -- calls corresponding define fn.
virtual	~PolynomialDelta ()
	destructor
virtual void	define (Real a_epsilon)
	define function
virtual Real	epsilon () const
	returns epsilon
virtual DiscreteDeltaFn *	clone () const
	make a copy of this delta function
virtual Real	evaluateDelta (Real a_radius) const
	evaluate the delta function at the given radius
virtual Real	integralDelta (Real a_radius) const
	returns the integral from 0 to radius of delta
virtual Real	computeK (RealVect &a_radius, int a_idir, int a_jdir) const
	returns the kernel_{ij} at radius r
virtual void	sumForce (FArrayBox &a_sum, const RealVect &a_force, const Box &a_box, const RealVect &a_position, const RealVect &a_origin, Real a_dx) const
	returns sum_j force_j kernel_ij over a box
virtual void	sumForce (FArrayBox &a_sum, const RealVect &a_force, const Box &a_box, int a_dir, int a_destComp, const RealVect &a_position, const RealVect &a_origin, Real a_dx) const
	returns sum_j force_j kernel_ij over a box
virtual Real	computeLapDelta (Real a_radius) const
	returns laplacian(delta) at radius r
void	setCoeffs (const Vector< Real > &a_coeffs)
	set coefficients for polynomial
void	setCoeff (Real a_coeff, int n)
const Real *	getCoeffs () const
int	numCoeffs () const
Protected Methods
void	setDefaultValues ()
void	defineFactor ()
Protected Attributes
Real	m_coeffs [NUM_POLY_COEFFS]
	polynomial coefficients
int	m_numCoeffs
Real	m_epsilon
	radius of numerical delta function
Real	m_factor
	what we multiply the polynomial by for normalization

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Detailed Description

Instantiation of discrete delta function using a polynomial.

The parameter epsilon defines the spreading radius of the discrete delta fn.

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Constructor & Destructor Documentation

PolynomialDelta::PolynomialDelta (    )

constructor

PolynomialDelta::PolynomialDelta (  Real    a_epsilon )

constructor with radius -- calls corresponding define fn.

virtual PolynomialDelta::~PolynomialDelta (    )  [virtual]

destructor

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Member Function Documentation

virtual DiscreteDeltaFn* PolynomialDelta::clone (    )  const [virtual]

make a copy of this delta function Implements DiscreteDeltaFn.

virtual Real PolynomialDelta::computeK (  RealVect &    a_radius, int    a_idir, int    a_jdir )  const [virtual]

returns the kernel_{ij} at radius r Implements DiscreteDeltaFn.

virtual Real PolynomialDelta::computeLapDelta (  Real    a_radius )  const [virtual]

returns laplacian(delta) at radius r Implements DiscreteDeltaFn.

virtual void PolynomialDelta::define (  Real    a_epsilon )  [virtual]

define function Implements DiscreteDeltaFn.

void PolynomialDelta::defineFactor (    )  [protected]

virtual Real PolynomialDelta::epsilon (    )  const [inline, virtual]

returns epsilon Implements DiscreteDeltaFn.

virtual Real PolynomialDelta::evaluateDelta (  Real    a_radius )  const [virtual]

evaluate the delta function at the given radius Implements DiscreteDeltaFn.

const Real* PolynomialDelta::getCoeffs (    )  const

virtual Real PolynomialDelta::integralDelta (  Real    a_radius )  const [virtual]

returns the integral from 0 to radius of delta Implements DiscreteDeltaFn.

int PolynomialDelta::numCoeffs (    )  const [inline]

void PolynomialDelta::setCoeff (  Real    a_coeff, int    n )

void PolynomialDelta::setCoeffs (  const Vector< Real > &    a_coeffs )

set coefficients for polynomial

void PolynomialDelta::setDefaultValues (    )  [protected]

virtual void PolynomialDelta::sumForce (  FArrayBox &    a_sum, const RealVect &    a_force, const Box &    a_box, int    a_dir, int    a_destComp, const RealVect &    a_position, const RealVect &    a_origin, Real    a_dx )  const [virtual]

returns sum_j force_j kernel_ij over a box this version computes a single (idir) component and places it in the destComp component of a_sum. this is done over a box for effeciency. Implements DiscreteDeltaFn.

virtual void PolynomialDelta::sumForce (  FArrayBox &    a_sum, const RealVect &    a_force, const Box &    a_box, const RealVect &    a_position, const RealVect &    a_origin, Real    a_dx )  const [virtual]

returns sum_j force_j kernel_ij over a box sum is a SpaceDim-component fab which will contain the sum this is done over a box for effeciency. Implements DiscreteDeltaFn.

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Member Data Documentation

Real PolynomialDelta::m_coeffs[NUM_POLY_COEFFS] [protected]

polynomial coefficients

Real PolynomialDelta::m_epsilon [protected]

radius of numerical delta function

Real PolynomialDelta::m_factor [protected]

what we multiply the polynomial by for normalization

int PolynomialDelta::m_numCoeffs [protected]

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

• PolynomialDelta.H

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