packagePartialMedium
Partial medium properties (base package of all media packages)
Extends from ThermofluidStream.Media.myMedia.Interfaces.Types, Modelica.Icons.MaterialPropertiesPackage.
Information
PartialMedium is a package and contains all declarations for a medium. This means that constants, models, and functions are defined that every medium is supposed to support (some of them are optional). A medium package inherits from PartialMedium and provides the equations for the medium. The details of this package are described in Modelica.Media.UsersGuide.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| ThermofluidStream.Media.myMedia.Interfaces.Choices.IndependentVariables | ThermoStates | Enumeration type for independent variables | |
| String | mediumName | "unusablePartialMedium" | Name of the medium |
| String[:] | substanceNames | {mediumName} | Names of the mixture substances. Set substanceNames={mediumName} if only one substance. |
| String[:] | extraPropertiesNames | fill("", 0) | Names of the additional (extra) transported properties. Set extraPropertiesNames=fill("",0) if unused |
| Boolean | singleState | = true, if u and d are not a function of pressure | |
| Boolean | reducedX | true | = true, if medium contains the equation sum(X) = 1.0; set reducedX=true if only one substance (see docu for details) |
| Boolean | fixedX | false | = true, if medium contains the equation X = reference_X |
| AbsolutePressure | reference_p | 101325 | Reference pressure of Medium: default 1 atmosphere |
| Temperature | reference_T | 298.15 | Reference temperature of Medium: default 25 deg Celsius |
| MassFraction[nX] | reference_X | fill(1/nX, nX) | Default mass fractions of medium |
| AbsolutePressure | p_default | 101325 | Default value for pressure of medium (for initialization) |
| Temperature | T_default | Modelica.Units.Conversions.from_degC(20) | Default value for temperature of medium (for initialization) |
| SpecificEnthalpy | h_default | specificEnthalpy_pTX(p_default, T_default, X_default) | Default value for specific enthalpy of medium (for initialization) |
| MassFraction[nX] | X_default | reference_X | Default value for mass fractions of medium (for initialization) |
| ExtraProperty[nC] | C_default | fill(0, nC) | Default value for trace substances of medium (for initialization) |
| Integer | nS | size(substanceNames, 1) | Number of substances |
| Integer | nX | nS | Number of mass fractions |
| Integer | nXi | if fixedX then 0 else if reducedX then nS - 1 else nS | Number of structurally independent mass fractions (see docu for details) |
| Integer | nC | size(extraPropertiesNames, 1) | Number of extra (outside of standard mass-balance) transported properties |
| Real[nC] | C_nominal | 1.0e-6*ones(nC) | Default for the nominal values for the extra properties |
Contents
| Name | Description |
|---|---|
| FluidConstants | Critical, triple, molecular and other standard data of fluid |
| ThermodynamicState | Minimal variable set that is available as input argument to every medium function |
| BaseProperties | Base properties (p, d, T, h, u, R_s, MM and, if applicable, X and Xi) of a medium |
| setState_pTX | Return thermodynamic state as function of p, T and composition X or Xi |
| setState_phX | Return thermodynamic state as function of p, h and composition X or Xi |
| setState_psX | Return thermodynamic state as function of p, s and composition X or Xi |
| setState_dTX | Return thermodynamic state as function of d, T and composition X or Xi |
| setSmoothState | Return thermodynamic state so that it smoothly approximates: if x > 0 then state_a else state_b |
| dynamicViscosity | Return dynamic viscosity |
| thermalConductivity | Return thermal conductivity |
| prandtlNumber | Return the Prandtl number |
| massFraction | Return independent mass Fraction |
| pressure | Return pressure |
| temperature | Return temperature |
| density | Return density |
| specificEnthalpy | Return specific enthalpy |
| specificInternalEnergy | Return specific internal energy |
| specificEntropy | Return specific entropy |
| specificGibbsEnergy | Return specific Gibbs energy |
| specificHelmholtzEnergy | Return specific Helmholtz energy |
| specificHeatCapacityCp | Return specific heat capacity at constant pressure |
| heatCapacity_cp | Alias for deprecated name |
| specificHeatCapacityCv | Return specific heat capacity at constant volume |
| heatCapacity_cv | Alias for deprecated name |
| isentropicExponent | Return isentropic exponent |
| isentropicEnthalpy | Return isentropic enthalpy |
| velocityOfSound | Return velocity of sound |
| isobaricExpansionCoefficient | Return overall the isobaric expansion coefficient beta |
| beta | Alias for isobaricExpansionCoefficient for user convenience |
| isothermalCompressibility | Return overall the isothermal compressibility factor |
| kappa | Alias of isothermalCompressibility for user convenience |
| density_derp_h | Return density derivative w.r.t. pressure at const specific enthalpy |
| density_derh_p | Return density derivative w.r.t. specific enthalpy at constant pressure |
| density_derp_T | Return density derivative w.r.t. pressure at const temperature |
| density_derT_p | Return density derivative w.r.t. temperature at constant pressure |
| density_derX | Return density derivative w.r.t. mass fraction |
| molarMass | Return the molar mass of the medium |
| specificEnthalpy_pTX | Return specific enthalpy from p, T, and X or Xi |
| specificEntropy_pTX | Return specific enthalpy from p, T, and X or Xi |
| density_pTX | Return density from p, T, and X or Xi |
| temperature_phX | Return temperature from p, h, and X or Xi |
| density_phX | Return density from p, h, and X or Xi |
| temperature_psX | Return temperature from p,s, and X or Xi |
| density_psX | Return density from p, s, and X or Xi |
| specificEnthalpy_psX | Return specific enthalpy from p, s, and X or Xi |
| MassFlowRate | Type for mass flow rate with medium specific attributes |
| Choices |