Class AttractiveTermPrLeeKesler

java.lang.Object

neqsim.thermo.component.attractiveeosterm.AttractiveTermBaseClass

neqsim.thermo.component.attractiveeosterm.AttractiveTermPr

neqsim.thermo.component.attractiveeosterm.AttractiveTermPrLeeKesler

All Implemented Interfaces:

Serializable, Cloneable, AttractiveTermInterface

public class AttractiveTermPrLeeKesler
extends AttractiveTermPr

Alternative alpha function for the Peng-Robinson EOS using a Soave-form m-factor.

Uses the Soave (SRK) m-factor correlation applied within the PR EOS framework:

  m = 0.480 + 1.574 \omega - 0.176 \omega^2

Note: Despite the class name, this implements the Soave m-factor — NOT the standard PR76 m-factor and NOT the Lee-Kesler BWR enthalpy method. SystemPrLeeKeslerEos uses attractiveTermNumber=1 (standard PR76 alpha), not this class. This class is retained at dispatch index 21 for backward compatibility and research purposes.

The alpha function form is:

  \alpha(T) = \left[1 + m \left(1 - \sqrt{T / T_c}\right)\right]^2

Author:

Even Solbraa

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private static final long	serialVersionUID	Serialization version UID.

Fields inherited from class AttractiveTermBaseClass

logger, m, parameters, parametersSolid

Constructor Summary

Constructors

Constructor	Description
AttractiveTermPrLeeKesler(ComponentEosInterface component)	Constructs a Lee-Kesler alpha term for the given PR component.

Method Summary

Modifier and Type	Method	Description
AttractiveTermPrLeeKesler	clone()	clone.
void	init()	init.
void	setm(double val)	Back-calculates the acentric factor from m using the LK/Soave quadratic.

Methods inherited from class AttractiveTermPr

alpha, aT, diffalphaT, diffaT, diffdiffalphaT, diffdiffaT

Methods inherited from class AttractiveTermBaseClass

equals, getComponent, getm, getParameters, setComponent, setParameters

Methods inherited from class Object

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

Field Details

serialVersionUID

private static final long serialVersionUID

Serialization version UID.

See Also:

• Constant Field Values

Constructor Details

AttractiveTermPrLeeKesler

public AttractiveTermPrLeeKesler(ComponentEosInterface component)

Constructs a Lee-Kesler alpha term for the given PR component.

Parameters:

component - the EOS component holding critical properties and acentric factor

Method Details

clone

public AttractiveTermPrLeeKesler clone()

clone.

Specified by:

clone in interface AttractiveTermInterface

Overrides:

clone in class AttractiveTermPr

Returns:

a AttractiveTermInterface object

init

public void init()

init.

Specified by:

init in interface AttractiveTermInterface

Overrides:

init in class AttractiveTermPr

setm

public void setm(double val)

Back-calculates the acentric factor from m using the LK/Soave quadratic.

Solves: -0.176 * omega^2 + 1.574 * omega + (0.480 - m) = 0

Specified by:

setm in interface AttractiveTermInterface

Overrides:

setm in class AttractiveTermPr

Parameters:

val - a double