.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

NameDescription
Rate
MolarFlowRate
MolarReactionRate
MolarEnthalpy
DerDensityByEntropy
DerEnergyByPressure
DerEnergyByMoles
DerEntropyByTemperature
DerEntropyByPressure
DerEntropyByMoles
DerPressureByDensity
DerPressureBySpecificVolume
DerPressureByTemperature
DerVolumeByTemperature
DerVolumeByPressure
DerVolumeByMoles
IsenthalpicExponent
IsentropicExponent
IsobaricVolumeExpansionCoefficient
IsochoricPressureCoefficient
IsothermalCompressibility
JouleThomsonCoefficient
ThermoFluidSpecialProperty records used by the ThermoFluid library
SaturationPropertiesProperties in the two phase region
SaturationBoundaryPropertiesProperties on both phase boundaries, including some derivatives
IF97BaseTwoPhaseIntermediate property data record for IF 97
IF97PhaseBoundaryPropertiesThermodynamic base properties on the phase boundary for IF97 steam tables
GibbsDerivsDerivatives of dimensionless Gibbs-function w.r.t. dimensionless pressure and temperature
HelmholtzDerivsDerivatives of dimensionless Helmholtz-function w.r.t. dimensionless pressure, density and temperature
TwoPhaseTransportPropsDefines properties on both phase boundaries, needed in the two phase region
PhaseBoundaryPropertiesThermodynamic base properties on the phase boundary
NewtonDerivatives_phDerivatives for fast inverse calculations of Helmholtz functions: p & h
NewtonDerivatives_psDerivatives for fast inverse calculation of Helmholtz functions: p & s
NewtonDerivatives_pTDerivatives for fast inverse calculations of Helmholtz functions:p & T
ExtraDerivativesAdditional thermodynamic derivatives
BridgmansTablesCalculates all entries in Bridgmans tables if first seven variables given
FundamentalConstantsConstants of the medium
AuxiliaryPropertiesIntermediate property data record
GibbsDerivs2Derivatives of Gibbs function w.r.t. pressure and temperature
NewtonDerivatives_dTDerivatives for fast inverse calculations of Gibbs function
gibbsToBridgmansTablesCalculates base coefficients for Bridgman's tables from gibbs enthalpy
helmholtzToBridgmansTablesCalculates base coefficients for Bridgmans tables from Helmholtz energy
gibbsToBoundaryPropsCalculate phase boundary property record from dimensionless Gibbs function
helmholtzToBoundaryPropsCalculate phase boundary property record from dimensionless Helmholtz function
cv2PhaseCompute isochoric specific heat capacity inside the two-phase region
cvdpT2PhaseCompute isochoric specific heat capacity inside the two-phase region and derivative of pressure w.r.t. temperature
gibbsToExtraDerivsCompute additional thermodynamic derivatives from dimensionless Gibbs function
helmholtzToExtraDerivsCompute additional thermodynamic derivatives from dimensionless Helmholtz function
Helmholtz_phFunction to calculate analytic derivatives for computing d and t given p and h
Helmholtz_pTFunction to calculate analytic derivatives for computing d and t given p and t
Helmholtz_psFunction to calculate analytic derivatives for computing d and t given p and s
smoothStepApproximation of a general step, such that the characteristic is continuous and differentiable
Gibbs2_phFunction to calculate analytic derivatives for computing T given p and h
Gibbs2_dTFunction to calculate analytic derivatives for computing p given d and T
Gibbs2_psFunction to calculate analytic derivatives for computing d and t given p and s

Revisions

Author: Hubertus Tummescheit,
Lund University
Department of Automatic Control
Box 118, 22100 Lund, Sweden
email: hubertus@control.lth.se

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