Class SystemPrLeeKeslerEos

java.lang.Object

neqsim.thermo.system.SystemThermo

neqsim.thermo.system.SystemEos

neqsim.thermo.system.SystemPrEos

neqsim.thermo.system.SystemPrLeeKeslerEos

All Implemented Interfaces:

Serializable, Cloneable, SystemInterface

public class SystemPrLeeKeslerEos
extends SystemPrEos

Thermodynamic system combining the Peng-Robinson EOS with the Lee-Kesler BWR method for enthalpy/entropy/Cp departures (PR-LK).

This property package uses two separate models:

1. VLE (phase equilibrium): standard PR76 alpha function applied to all acentric factors:

     m = 0.37464 + 1.54226 \omega - 0.26992 \omega^2
   

2. Enthalpy / Entropy / Cp departures: Lee-Kesler BWR correlation instead of PR departure functions — hence the "PR-LK" label.

The key difference from SystemPrEos1978 is that the PR76 alpha applies to all components including heavy pseudo-fractions (ω > 0.49), whereas PR1978 uses a modified polynomial for those components. For typical natural-gas and oil systems the vapour fraction predicted by this class will differ from the PR1978 formulation for components with ω > 0.49.

Note on enthalpy: the Lee-Kesler BWR enthalpy override is currently not implemented; H/S/Cp departures are calculated using the standard PR EOS departure functions. A future enhancement should override getEnthalpy in the phase classes to use LK BWR tables.

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 SystemThermo

a, allowPhaseShift, attractiveTermNumber, beta, CapeOpenProperties10, CapeOpenProperties11, characterization, checkStability, chemicalReactionOperations, chemicalSystem, componentNameTag, criticalPressure, criticalTemperature, enhancedMultiPhaseCheck, fluidInfo, fluidName, hydrateCheck, interfaceProp, isInitialized, logger, maxNumberOfPhases, modelName, multiPhaseCheck, numberOfComponents, numberOfPhases, numericDerivatives, oilAssayCharacterisation, phaseArray, phaseIndex, phaseType, resultTable, solidPhaseCheck, standard, waxCharacterisation

Constructor Summary

Constructors

Constructor	Description
SystemPrLeeKeslerEos()	Default constructor creating a PR-LK system at 298.15 K and 1 bara.
SystemPrLeeKeslerEos(double T, double P)	Constructs a PR-LK system at the specified temperature and pressure.
SystemPrLeeKeslerEos(double T, double P, boolean checkForSolids)	Constructs a PR-LK system with optional solid phase calculations.

Method Summary

Modifier and Type	Method	Description
SystemPrLeeKeslerEos	clone()	clone.

Methods inherited from class SystemEos

equals

Methods inherited from class SystemThermo

addCapeOpenProperty, addCharacterized, addComponent, addComponent, addComponent, addComponent, addComponent, addComponent, addComponent, addComponent, addFluid, addFluid, addGasToLiquid, addHydratePhase, addHydratePhase2, addLiquidToGas, addOilFractions, addOilFractions, addPhase, addPhaseFractionToPhase, addPhaseFractionToPhase, addPlusFraction, addSalt, addSolidComplexPhase, addSolidPhase, addTBPfraction, addTBPfraction, addTBPfraction2, addTBPfraction3, addTBPfraction4, addToComponentNames, allowPhaseShift, allowPhaseShift, autoSelectMixingRule, autoSelectModel, calc_x_y, calc_x_y_nonorm, calcHenrysConstant, calcInterfaceProperties, calcKIJ, calculateDensityFromBoilingPoint, calculateMolarMassFromDensityAndBoilingPoint, changeComponentName, checkStability, checkStability, chemicalReactionInit, clearAll, createDatabase, createTable, deleteFluidPhase, display, doEnhancedMultiPhaseCheck, doMultiPhaseCheck, doSolidPhaseCheck, getAntoineVaporPressure, getBeta, getBeta, getCapeOpenProperties10, getCapeOpenProperties11, getCASNumbers, getCharacterization, getChemicalReactionOperations, getCompFormulaes, getCompIDs, getCompNames, getComponentNameTag, getCorrectedVolume, getCorrectedVolumeFraction, getCp, getCp, getCv, getCv, getDensity, getDensity, getdPdVtn, getdVdPtn, getdVdTpn, getEmptySystemClone, getEnthalpy, getEnthalpy, getEntropy, getEntropy, getExergy, getExergy, getFlowRate, getFluidInfo, getFluidName, getGamma, getGasPhase, getGibbsEnergy, getHeatOfVaporization, getHelmholtzEnergy, getHydrateCheck, getIdealLiquidDensity, getInterfacialTension, getInterfacialTension, getInterfacialTension, getInternalEnergy, getInternalEnergy, getInterphaseProperties, getJouleThomsonCoefficient, getJouleThomsonCoefficient, getKappa, getKinematicViscosity, getKinematicViscosity, getKvector, getLiquidPhase, getLiquidVolume, getLowestGibbsEnergyPhase, getMass, getMaxNumberOfPhases, getMixingRule, getMixingRuleName, getModelName, getMolarComposition, getMolarMass, getMolarMass, getMolarRate, getMolarVolume, getMolarVolume, getMolecularWeights, getMoleFraction, getMoleFractionsSum, getNormalBoilingPointTemperatures, getNumberOfComponents, getNumberOfOilFractionComponents, getNumberOfPhases, getOilAssayCharacterisation, getOilFractionIDs, getOilFractionLiquidDensityAt25C, getOilFractionMolecularMass, getOilFractionNormalBoilingPoints, getPC, getPhase, getPhase, getPhase, getPhaseFraction, getPhaseIndex, getPhaseIndex, getPhaseIndex, getPhaseNumberOfPhase, getPhaseOfType, getPhases, getPressure, getPressure, getPressure, getProperties, getProperty, getProperty, getProperty, getResultTable, getSoundSpeed, getSoundSpeed, getStandard, getStandard, getSumBeta, getTC, getTemperature, getTemperature, getTemperature, getThermalConductivity, getThermalConductivity, getTotalNumberOfMoles, getViscosity, getViscosity, getVolume, getVolume, getVolumeFraction, getWaxCharacterisation, getWaxModel, getWeightBasedComposition, getWtFraction, getZ, getzvector, getZvolcorr, hasPhaseType, hasPlusFraction, hasTBPFraction, init, init, init_x_y, initAnalytic, initAnalytic, initBeta, initNumeric, initNumeric, initNumeric, initPhysicalProperties, initPhysicalProperties, initRefPhases, initTotalNumberOfMoles, invertPhaseTypes, isBetaValid, isChemicalSystem, isChemicalSystem, isForcePhaseTypes, isImplementedCompositionDeriativesofFugacity, isImplementedCompositionDeriativesofFugacity, isImplementedPressureDeriativesofFugacity, isImplementedTemperatureDeriativesofFugacity, isInitialized, isMultiphaseWaxCheck, isNumericDerivatives, isPhase, normalizeBeta, orderByDensity, phaseToSystem, phaseToSystem, phaseToSystem, phaseToSystem, readFluid, readObject, readObjectFromFile, reInitPhaseInformation, reInitPhaseType, removeComponent, removePhase, removePhaseKeepTotalComposition, renameComponent, replacePhase, reset, reset_x_y, resetCharacterisation, resetDatabase, resetPhysicalProperties, save, saveFluid, saveFluid, saveObject, saveObjectToFile, saveToDataBase, setAllComponentsInPhase, setAllPhaseType, setAttractiveTerm, setBeta, setBeta, setBinaryInteractionParameter, setBinaryInteractionParameter, setBmixType, setComponentCriticalParameters, setComponentCriticalParameters, setComponentFlowRates, setComponentNames, setComponentNameTag, setComponentNameTagOnNormalComponents, setComponentVolumeCorrection, setComponentVolumeCorrection, setEmptyFluid, setEnhancedMultiPhaseCheck, setFluidInfo, setFluidName, setForcePhaseTypes, setForceSinglePhase, setForceSinglePhase, setHeavyTBPfractionAsPlusFraction, setHydrateCheck, setImplementedCompositionDeriativesofFugacity, setImplementedPressureDeriativesofFugacity, setImplementedTemperatureDeriativesofFugacity, setLastTBPasPlus, setMaxNumberOfPhases, setMixingRule, setMixingRule, setMixingRuleGEmodel, setMixingRuleParametersForComponent, setModel, setModelName, setMolarComposition, setMolarCompositionOfNamedComponents, setMolarCompositionOfPlusFluid, setMolarCompositionPlus, setMolarFlowRates, setMultiPhaseCheck, setMultiphaseWaxCheck, setNumberOfPhases, setNumericDerivatives, setPC, setPhase, setPhaseIndex, setPhaseType, setPhaseType, setPressure, setPressure, setSolidPhaseCheck, setSolidPhaseCheck, setStandard, setTC, setTemperature, setTemperature, setTemperature, setTotalFlowRate, setTotalNumberOfMoles, setUseTVasIndependentVariables, setWaxModelType, toCompJson, toJson, tuneModel, useTVasIndependentVariables, useVolumeCorrection, write, write

Methods inherited from class Object

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

Methods inherited from interface SystemInterface

addComponent, addComponents, addComponents, calcResultTable, display, getComponent, getComponent, getComponentNames, getDensityAtReferenceConditions, getGamma2, getHydrateFraction, getHydratePhase, getNumberOfMoles, getpH, getPhaseNumberOfPhase, hasComponent, hasComponent, hashCode, hasHydratePhase, hasIons, hasPhaseType, hasSolidPhase, initPhysicalProperties, initProperties, initThermoProperties, prettyPrint, setLiquidDensityModel, setLiquidDensityModel, setMixingRule, setMixingRule, setPhysicalPropertyModel, setPhysicalPropertyModel, validateSetup

Field Details

serialVersionUID

private static final long serialVersionUID

Serialization version UID.

See Also:

• Constant Field Values

Constructor Details

SystemPrLeeKeslerEos

public SystemPrLeeKeslerEos()

Default constructor creating a PR-LK system at 298.15 K and 1 bara.

SystemPrLeeKeslerEos

public SystemPrLeeKeslerEos(double T,
 double P)

Constructs a PR-LK system at the specified temperature and pressure.

Parameters:

T - the temperature in Kelvin

P - the pressure in bara (absolute pressure)

SystemPrLeeKeslerEos

public SystemPrLeeKeslerEos(double T,
 double P,
 boolean checkForSolids)

Constructs a PR-LK system with optional solid phase calculations.

Parameters:

T - the temperature in Kelvin

P - the pressure in bara (absolute pressure)

checkForSolids - set true to enable solid phase calculations

Method Details

clone

public SystemPrLeeKeslerEos clone()

clone.

Creates a deep copy of this SystemPrEos instance.

Specified by:

clone in interface SystemInterface

Overrides:

clone in class SystemPrEos

Returns:

a SystemInterface object