.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
 OneNonLinearEquation Determine solution of a non-linear algebraic equation in one unknown without derivatives in a reliable and efficient way

Revisions

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

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