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Altaxo.Science.Thermodynamics.Fluids
HelmholtzEquationOfStateOfPureFluidsBySpanEtAl Class
HelmholtzEquationOfStateOfPureFluidsBySpanEtAl Methods
MeltingPressure_Type1 Method
MeltingPressure_Type2 Method
MeltingPressure_TypeH Method
MeltingPressureEstimate_FromTemperature Method
MeltingPressureEstimateAndDerivativeWrtTemperature_FromTemperature Method
MeltingTemperatureEstimate_FromPressure Method
Phi0_OfReducedVariables Method
Phi0_tau_OfReducedVariables Method
Phi0_tautau_OfReducedVariables Method
PhiR_delta_OfReducedVariables Method
PhiR_deltadelta_OfReducedVariables Method
PhiR_deltatau_OfReducedVariables Method
PhiR_OfReducedVariables Method
PhiR_tau_OfReducedVariables Method
PhiR_tautau_OfReducedVariables Method
Pow Method
SaturatedLiquidMoleDensityEstimate_FromTemperature Method
SaturatedMoleDensity_Type1 Method
SaturatedMoleDensity_Type2 Method
SaturatedMoleDensity_Type3 Method
SaturatedMoleDensity_Type4 Method
SaturatedMoleDensity_Type5 Method
SaturatedMoleDensity_Type6 Method
SaturatedVaporMoleDensityEstimate_FromTemperature Method
SaturatedVaporPressure_Type1 Method
SaturatedVaporPressure_Type2 Method
SaturatedVaporPressure_Type3 Method
SaturatedVaporPressure_Type4 Method
SaturatedVaporPressure_Type5 Method
SaturatedVaporPressure_Type6 Method
SaturatedVaporPressureEstimate_FromTemperature Method
SaturatedVaporPressureEstimateAndDerivativeWrtTemperature_FromTemperature Method
SublimationPressure_Type1 Method
SublimationPressure_Type2 Method
SublimationPressure_Type3 Method
SublimationPressureEstimate_FromTemperature Method
SublimationPressureEstimateAndDerivativeWrtTemperature_FromTemperature Method
SublimationTemperatureEstimate_FromPressure Method
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HelmholtzEquationOfStateOfPureFluidsBySpanEtAlPhi0_OfReducedVariables Method

Calculates the ideal (zero-density) part of the dimensionless Helmholtz free energy for the supplied reduced variables. See Page 1541, Table 28 in [2].

Namespace: Altaxo.Science.Thermodynamics.Fluids
Assembly: AltaxoCore (in AltaxoCore.dll) Version: 4.8.3448.0 (4.8.3448.0)
Syntax
C#
Copy
public override double Phi0_OfReducedVariables(
	double delta,
	double tau
)

Parameters

delta  Double
Reduced density (density / density at the critical point).
tau  Double
Reduced inverse temperature (critical temperature / temperature).

Return Value

Double
The ideal contribution to the dimensionless Helmholtz energy evaluated at the supplied reduced variables. The returned value is dimensionless.
See Also