nce.phprop.eosgas

Class GasEosVDW

java.lang.Object

nce.base.PropertyEquation

nce.phprop.eosgas.GasEos

nce.phprop.eosgas.GasEosVDW

All Implemented Interfaces:

java.io.Serializable

public class GasEosVDW
extends GasEos

Van der Waals cubic equation of state.

Version:

20140118

Author:

Carlo Tegano

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
GasEosVDW()

Method Summary

Methods

Modifier and Type	Method and Description
double	evalFugacityCoefficientL(double P0, double P, double firstPsat, double T) Evaluate compressed liquid fugacity coefficient
double	evalFugacityCoefficientV(double P0, double P, double T) Evaluates pure species vapor phase fugacity coefficient
double	evalLiquidVolume(double P, double T) Evaluates liquid molar volume with eos.
double	evalPressure(double V, double T) Evalutes fluid pressure with eos.
double	evalResidualEnthalpyL(double P0, double P, double T)
double	evalResidualEnthalpyV(double P0, double P, double T) Evaluates vapor phase residual entropy from the definition
double	evalResidualEntropyL(double P0, double P, double T)
double	evalResidualEntropyV(double P0, double P, double T) Evaluates vapor phase residual entropy by numerical differentiation of the equation of state at constant pressure.
double	evalTemperature(double P, double V) Evaluates fluid temperature with eos.
double	evalVaporVolume(double P, double T) Evaluates vapor molar volume with eos.
double	evalZl(double P, double T)
double	evalZv(double P, double T)
void	init(double[] aPc, double[] aVc, double[] aTc, double[][] binK, double[] y)

Methods inherited from class nce.phprop.eosgas.GasEos

evalFugacityL, evalFugacityV, evalResidualGibbsFreeEnergyL, evalResidualGibbsFreeEnergyV, evalResidualInternalEnergyV, evalSatPressure, evalZ, evalZl, evalZv, getP, getPsat, getT, getVl, getVv, isConsistent, setP, setPsat, setT, setVl, setVv

Methods inherited from class nce.base.PropertyEquation

applyMixRule, getConvAdd, getConvFact, getDescription, getFixedValue, getInputRanges, getLabel, getOutputRanges, getPar, getStatus, setConvAdd, setConvFact, setDescription, setFixedValue, setLabel, setPar, setParameterByIndex, toStringSummary

Methods inherited from class java.lang.Object

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

Constructor Detail

GasEosVDW

public GasEosVDW()

Method Detail

init

public void init(double[] aPc,
        double[] aVc,
        double[] aTc,
        double[][] binK,
        double[] y)

evalPressure

public double evalPressure(double V,
                  double T)

Description copied from class: GasEos

Evalutes fluid pressure with eos.

Specified by:

evalPressure in class GasEos

Returns:

P

evalVaporVolume

public double evalVaporVolume(double P,
                     double T)

Description copied from class: GasEos

Evaluates vapor molar volume with eos.

Specified by:

evalVaporVolume in class GasEos

Returns:

Vapor molar volume

evalLiquidVolume

public double evalLiquidVolume(double P,
                      double T)

Description copied from class: GasEos

Evaluates liquid molar volume with eos.

Specified by:

evalLiquidVolume in class GasEos

Returns:

Liquid molar volume

evalTemperature

public double evalTemperature(double P,
                     double V)

Description copied from class: GasEos

Evaluates fluid temperature with eos.

Specified by:

evalTemperature in class GasEos

Returns:

T

evalZv

public double evalZv(double P,
            double T)

Overrides:

evalZv in class GasEos

evalZl

public double evalZl(double P,
            double T)

Overrides:

evalZl in class GasEos

evalResidualEntropyV

public double evalResidualEntropyV(double P0,
                          double P,
                          double T)

Description copied from class: GasEos

Evaluates vapor phase residual entropy by numerical differentiation of the equation of state at constant pressure.

Overrides:

evalResidualEntropyV in class GasEos

Parameters:

P0 - reference pressure, normally 0

P - system pressure

T - system temperature

evalResidualEnthalpyV

public double evalResidualEnthalpyV(double P0,
                           double P,
                           double T)

Description copied from class: GasEos

Evaluates vapor phase residual entropy from the definition

Overrides:

evalResidualEnthalpyV in class GasEos

Parameters:

P0 - reference pressure, normally 0

P - system pressure

T - system temperature

evalResidualEntropyL

public double evalResidualEntropyL(double P0,
                          double P,
                          double T)

Overrides:

evalResidualEntropyL in class GasEos

evalResidualEnthalpyL

public double evalResidualEnthalpyL(double P0,
                           double P,
                           double T)

Overrides:

evalResidualEnthalpyL in class GasEos

evalFugacityCoefficientV

public double evalFugacityCoefficientV(double P0,
                              double P,
                              double T)

Description copied from class: GasEos

Evaluates pure species vapor phase fugacity coefficient

Overrides:

evalFugacityCoefficientV in class GasEos

Parameters:

P0 - reference pressure, normally 0

P - system pressure

T - system temperature

Returns:

gamma fugacity coefficient

evalFugacityCoefficientL

public double evalFugacityCoefficientL(double P0,
                              double P,
                              double firstPsat,
                              double T)

Description copied from class: GasEos

Evaluate compressed liquid fugacity coefficient

Overrides:

evalFugacityCoefficientL in class GasEos

Parameters:

P0 - reference pressure, in this case P0 = Psat

P - system pressure

firstPsat - first guess for saturation pressure iterative calculation only used if automatic guess fails

T - system temperature

Returns:

f fugacity coefficient