.Modelica.Media.Common

Information

Package description

Package Modelica.Media.Common provides records and functions shared by many of the property sub-packages. High accuracy fluid property models share a lot of common structure, even if the actual models are different. Common data structures and computations shared by these property models are collected in this library.

Contents

Name	Description
Rate
MolarFlowRate
MolarReactionRate
MolarEnthalpy
DerDensityByEntropy
DerEnergyByPressure
DerEnergyByMoles
DerEntropyByTemperature
DerEntropyByPressure
DerEntropyByMoles
DerPressureByDensity
DerPressureBySpecificVolume
DerPressureByTemperature
DerVolumeByTemperature
DerVolumeByPressure
DerVolumeByMoles
IsenthalpicExponent
IsentropicExponent
IsobaricVolumeExpansionCoefficient
IsochoricPressureCoefficient
IsothermalCompressibility
JouleThomsonCoefficient
ThermoFluidSpecial	Property records used by the ThermoFluid library
SaturationProperties	Properties in the two phase region
SaturationBoundaryProperties	Properties on both phase boundaries, including some derivatives
IF97BaseTwoPhase	Intermediate property data record for IF 97
IF97PhaseBoundaryProperties	Thermodynamic base properties on the phase boundary for IF97 steam tables
GibbsDerivs	Derivatives of dimensionless Gibbs-function w.r.t. dimensionless pressure and temperature
HelmholtzDerivs	Derivatives of dimensionless Helmholtz-function w.r.t. dimensionless pressure, density and temperature
TwoPhaseTransportProps	Defines properties on both phase boundaries, needed in the two phase region
PhaseBoundaryProperties	Thermodynamic base properties on the phase boundary
NewtonDerivatives_ph	Derivatives for fast inverse calculations of Helmholtz functions: p & h
NewtonDerivatives_ps	Derivatives for fast inverse calculation of Helmholtz functions: p & s
NewtonDerivatives_pT	Derivatives for fast inverse calculations of Helmholtz functions:p & T
ExtraDerivatives	Additional thermodynamic derivatives
BridgmansTables	Calculates all entries in Bridgmans tables if first seven variables given
FundamentalConstants	Constants of the medium
AuxiliaryProperties	Intermediate property data record
GibbsDerivs2	Derivatives of Gibbs function w.r.t. pressure and temperature
NewtonDerivatives_dT	Derivatives for fast inverse calculations of Gibbs function
gibbsToBridgmansTables	Calculates base coefficients for Bridgman's tables from gibbs enthalpy
helmholtzToBridgmansTables	Calculates base coefficients for Bridgmans tables from Helmholtz energy
gibbsToBoundaryProps	Calculate phase boundary property record from dimensionless Gibbs function
helmholtzToBoundaryProps	Calculate phase boundary property record from dimensionless Helmholtz function
cv2Phase	Compute isochoric specific heat capacity inside the two-phase region
cvdpT2Phase	Compute isochoric specific heat capacity inside the two-phase region and derivative of pressure w.r.t. temperature
gibbsToExtraDerivs	Compute additional thermodynamic derivatives from dimensionless Gibbs function
helmholtzToExtraDerivs	Compute additional thermodynamic derivatives from dimensionless Helmholtz function
Helmholtz_ph	Function to calculate analytic derivatives for computing d and t given p and h
Helmholtz_pT	Function to calculate analytic derivatives for computing d and t given p and t
Helmholtz_ps	Function to calculate analytic derivatives for computing d and t given p and s
smoothStep	Approximation of a general step, such that the characteristic is continuous and differentiable
Gibbs2_ph	Function to calculate analytic derivatives for computing T given p and h
Gibbs2_dT	Function to calculate analytic derivatives for computing p given d and T
Gibbs2_ps	Function to calculate analytic derivatives for computing d and t given p and s

Revisions

• First implemented: July, 2000 by Hubertus Tummescheit for the ThermoFluid Library with help from Jonas Eborn and Falko Jens Wagner
• Code reorganization, enhanced documentation, additional functions: December, 2002 by Hubertus Tummescheit and move to Modelica properties library.
• Inclusion into Modelica.Media: September 2003