nce.phprop.eosgas

Class GasEosVirial

java.lang.Object

nce.base.PropertyEquation

nce.phprop.eosgas.GasEos

nce.phprop.eosgas.GasEosVirial

All Implemented Interfaces:

java.io.Serializable

public class GasEosVirial
extends GasEos

Virial equation of state, truncated at 2nd term.

Version:

20151113

Author:

Carlo Tegano

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	GasEosVirial.corrTypeB Available correlations for the 2nd virial coefficient B

Constructor Summary

Constructors

Constructor and Description
GasEosVirial()

Method Summary

Methods

Modifier and Type	Method and Description
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	evalResidualEnthalpyV(double P0, double P, double T) Evaluates vapor phase residual entropy from the definition
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	evalZv(double P, double T)
double	getB()
double	getB2()
GasEosVirial.corrTypeB	getModelB()
void	init(double[] aPc, double[] aVc, double[] aTc, double[] aAcFac, double[] y, double[] p, GasEosVirial.corrTypeB modelB) Initializes the model.
void	init(double[] aPc, double[] aVc, double[] aTc, double[] aAcFac, double[] y, GasEosVirial.corrTypeB modelB) Initializes the solver without providing parameters vector p to the model
boolean	isConsistent(double P, double V, double T) Checks if state variables are all consistent with the eos
void	setModelB(GasEosVirial.corrTypeB modelB) Sets the model to be used for the evaluation of 2nd virial coefficient B

Methods inherited from class nce.phprop.eosgas.GasEos

evalFugacityCoefficientL, evalFugacityL, evalFugacityV, evalResidualEnthalpyL, evalResidualEntropyL, evalResidualGibbsFreeEnergyL, evalResidualGibbsFreeEnergyV, evalResidualInternalEnergyV, evalSatPressure, evalZ, evalZl, evalZl, evalZv, getP, getPsat, getT, getVl, getVv, 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

GasEosVirial

public GasEosVirial()

Method Detail

getModelB

public GasEosVirial.corrTypeB getModelB()

setModelB

public void setModelB(GasEosVirial.corrTypeB modelB)

Sets the model to be used for the evaluation of 2nd virial coefficient B

Parameters:

modelB - the selected correlation for B

init

public void init(double[] aPc,
        double[] aVc,
        double[] aTc,
        double[] aAcFac,
        double[] y,
        GasEosVirial.corrTypeB modelB)

Initializes the solver without providing parameters vector p to the model

Parameters:

aPc - array with pure components critical pressure

aVc - array with pure components critical volume

aTc - array with pure components critical temperature

aAcFac - array with pure components acentric factor

y - array with vapor phase mole fractions

modelB - choosen model for the evaluation of 2nd virial coefficient

init

public void init(double[] aPc,
        double[] aVc,
        double[] aTc,
        double[] aAcFac,
        double[] y,
        double[] p,
        GasEosVirial.corrTypeB modelB)

Initializes the model. The most general init method, includes the parameters vector p

Parameters:

aPc - array with pure components critical pressure

aVc - array with pure components critical volume

aTc - array with pure components critical temperature

aAcFac - array with pure components acentric factor

y - array with vapor phase mole fractions

p - array with parameters for the calculation of 2nd virial coefficient

modelB - the choosen model for the evaluation of 2nd virial coefficient

evalZv

public double evalZv(double P,
            double T)

Overrides:

evalZv in class GasEos

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

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

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

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

isConsistent

public boolean isConsistent(double P,
                   double V,
                   double T)

Description copied from class: GasEos

Checks if state variables are all consistent with the eos

Overrides:

isConsistent in class GasEos

Parameters:

P - pressure [Pa]

V - colume [m3/mol]

T - temperature [K]

Returns:

true if pressure, volume and temperature are consistent

getB

public double getB()

getB2

public double getB2()