nce.piping

Class PipeTwoPhaseDensity

java.lang.Object

nce.piping.PipeTwoPhaseDensity

public class PipeTwoPhaseDensity
extends java.lang.Object

Recommended method for the evaluation of mixture density in two phase flow in a pipe. It is combination of the method of Lockhart-Martinelli and Chisholm correlation

Version:

20160228

Author:

Carlo Tegano

Constructor Summary

Constructors

Constructor and Description
PipeTwoPhaseDensity()

Method Summary

Methods

Modifier and Type	Method and Description
double	evalLockMartParameter(double vDens, double lDens, double vVisc, double lVisc, double x) Evaluates Lockhart - Martinelli parameter
double	evalSlipRatio(double vDens, double lDens, double vVisc, double lVisc, double x) Evaluates two phase slip ratio, i.e.
double	evalTwoPhaseDensity(double vDens, double lDens, double vVisc, double lVisc, double x) General method for the evaluation of two phase density using fraction.
double	evalTwoPhaseMultiplier() Pure implementation of the method Lokhart - Martinelli This method invokes all sub-methods to evaluate also two phase density, slip ratio and void fraction
double	evalVoidFrac(double vDens, double lDens, double vVisc, double lVisc, double x) General method for the evaluation of void fraction.
double	getLockMartParameter() Returns computed Lockhart - Martinelli parameter
double	getTwoPhaseMultiplier()
void	init(Pipe pipe) Initialization of two phase pressure drop solver
void	setTwoPhaseMultiplier(double tpMult)
void	transferOutputToPipe()

Methods inherited from class java.lang.Object

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

Constructor Detail

PipeTwoPhaseDensity

public PipeTwoPhaseDensity()

Method Detail

evalTwoPhaseMultiplier

public double evalTwoPhaseMultiplier()

Pure implementation of the method Lokhart - Martinelli This method invokes all sub-methods to evaluate also two phase density, slip ratio and void fraction

evalSlipRatio

public double evalSlipRatio(double vDens,
                   double lDens,
                   double vVisc,
                   double lVisc,
                   double x)

Evaluates two phase slip ratio, i.e. the relative velocity between vapor phase and liquid phase

evalLockMartParameter

public double evalLockMartParameter(double vDens,
                           double lDens,
                           double vVisc,
                           double lVisc,
                           double x)

Evaluates Lockhart - Martinelli parameter

init

public void init(Pipe pipe)

Initialization of two phase pressure drop solver

evalTwoPhaseDensity

public double evalTwoPhaseDensity(double vDens,
                         double lDens,
                         double vVisc,
                         double lVisc,
                         double x)

General method for the evaluation of two phase density using fraction. Can be customized by overriding evalSlipRatio()

evalVoidFrac

public double evalVoidFrac(double vDens,
                  double lDens,
                  double vVisc,
                  double lVisc,
                  double x)

General method for the evaluation of void fraction. Can be customized by overriding evalSlipRatio()

transferOutputToPipe

public void transferOutputToPipe()

getTwoPhaseMultiplier

public double getTwoPhaseMultiplier()

setTwoPhaseMultiplier

public void setTwoPhaseMultiplier(double tpMult)

getLockMartParameter

public double getLockMartParameter()

Returns computed Lockhart - Martinelli parameter