org.jscience.physics.fluids.dynamics.characteristics
Class QuadraticCharacteristics

java.lang.Object
  org.jscience.physics.fluids.dynamics.characteristics.QuadraticCharacteristics

public class QuadraticCharacteristics
extends java.lang.Object

This class calculates the values of the different magnitudes cx, cy, cc y cd at the root of the caracteristics for a 2D meshing with a speed field. Tipically these magnitudes correspond with the two speed components x and y and with the concentration of a contaminant or the turbulent mu.

Constructor Summary

QuadraticCharacteristics(KernelADFC kadfc, NavierStokesMesh m, double deltaT, boolean contam)
Constructor.

Method Summary

void	antidifusorPoisson(double[] a, int coord) experimental Method
void	calculate(double[] cxa, double[] cya, double[] cca, double[] cda) principal method of the characteristics.
void	characteristicForwardCorrection() experimental Method
void	correctAntidifusive(double[] c) experimental Method
void	correctionForwardCharacteristics2() experimental Method
void	correctMinMax(double[] orig, double[] trans) experimental Method
void	initializeCaches() Call this method before calculate().
void	obtainTransformationCurve(double[] x, double[] y) experimental Method
void	setSpeedFields(double[] vxa, double[] vya, double[] vxb, double[] vyb) Indicatestes the values of the two speed components in each node at the instants n and (n-1)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

QuadraticCharacteristics

public QuadraticCharacteristics(KernelADFC kadfc,
                                NavierStokesMesh m,
                                double deltaT,
                                boolean contam)

Constructor. Takes as arguments the mesh and the time step duration

Parameters:

kadfc - kernel parent of the current process

m - mesh to consider

deltaT - time step

contam - indicates if the contaminant should be transported or not

Method Detail

calculate

public void calculate(double[] cxa,
                      double[] cya,
                      double[] cca,
                      double[] cda)

principal method of the characteristics. Takes the values of the magnitudes to be estudied in each of the nodes (cx, cy, cc, cd) and returns a solution in those given vectors.

Parameters:

cxa - value component X of the magnitude in the nodes

cya - value component Y of the magnitude in the nodes

cca - value auxiliary magnitude 1 in the nodes

cda - value auxiliary magnitude 2 in the nodes

characteristicForwardCorrection

public void characteristicForwardCorrection()

experimental Method

correctionForwardCharacteristics2

public void correctionForwardCharacteristics2()

experimental Method

antidifusorPoisson

public void antidifusorPoisson(double[] a,
                               int coord)

experimental Method

Parameters:

a - DOCUMENT ME!

coord - DOCUMENT ME!

obtainTransformationCurve

public void obtainTransformationCurve(double[] x,
                                      double[] y)

experimental Method

Parameters:

x - DOCUMENT ME!

y - DOCUMENT ME!

correctAntidifusive

public void correctAntidifusive(double[] c)

experimental Method

Parameters:

c - DOCUMENT ME!

correctMinMax

public void correctMinMax(double[] orig,
                          double[] trans)

experimental Method

Parameters:

orig - DOCUMENT ME!

trans - DOCUMENT ME!

initializeCaches

public void initializeCaches()

Call this method before calculate(). The invocation is done by default if needed.

setSpeedFields

public void setSpeedFields(double[] vxa,
                           double[] vya,
                           double[] vxb,
                           double[] vyb)

Indicatestes the values of the two speed components in each node at the instants n and (n-1)

Parameters:

vxa - component x of the speed at instant n

vya - component y of the speed at instant n

vxb - component x of the speed at instant n-1

vyb - component y of the speed at instant n-1