packagePartialMedium
Partial medium properties (base package of all media packages)
Extends from ThermalSeparation.Media.BaseMediumLiquid (base class for liquid medium package), Modelica.Icons.Package (Icon for standard packages).
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 |
|---|---|---|---|
| Integer | nSubstance (from BaseMediumLiquid) | 2 | number of components |
| SI.Temperature[nSubstance] | Tcrit (from BaseMediumLiquid) | ||
| SI.Pressure[nSubstance] | pcrit (from BaseMediumLiquid) | ||
| SI.MolarVolume[nSubstance] | Vcrit (from BaseMediumLiquid) | ||
| Real[nSubstance] | omega (from BaseMediumLiquid) | acentric factor | |
| SI.ElectricDipoleMomentOfMolecule[nSubstance] | mu (from BaseMediumLiquid) | ||
| SI.MolarMass[nSubstance] | MMX (from BaseMediumLiquid) | ||
| Integer[nSubstance] | eq_Tsonopoulos (from BaseMediumLiquid) | no. of equation for equation a and b in Table 4-5 in Properties of Gases and Liquids, 5th ed. | |
| Boolean[nSubstance] | henry (from BaseMediumLiquid) | true if liquid fugacity of substance is to be calculated with Henry's law | |
| Boolean[nSubstance] | has_etaSubstance (from BaseMediumLiquid) | true if substance i provides a value for the pure dynamic viscosity at system pressure and temperature | |
| Integer[nSubstance] | ic (from BaseMediumLiquid) | zeros(nSubstance) | ionic charge of the components, i.e. H+ = 1, OH- = -1, H2O=0 |
| 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 | if nX == 0 then fill(0, nX) else 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 | ThermalSeparation.Media.WaterBasedLiquid.BaseClasses.PartialMedium.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) |
| Integer | nS | size(substanceNames, 1) | Number of substances |
| Integer | nX | if nS == 1 then 0 else nS | Number of mass fractions (= 0, if only one substance) |
| Integer | nXi | if fixedX then 0 else if reducedX then nS - 1 else nX | 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 |
| Boolean | ph_explicit | false | true if explicit in pressure and specific enthalpy |
| Boolean | dT_explicit | false | true if explicit in density and temperature |
| Boolean | pT_explicit | true | true if explicit in pressure and temperature |
| FluidConstants | fluidConstants | constant data for the fluid |
Contents
| Name | Description |
|---|---|
| critical, triple, molecular and other standard data of fluid | |
| Saturation properties of two phase medium | |
| Base properties (p, d, T, h, u, R, MM and, if applicable, X) of a medium | |
| Return thermodynamic state from p and T | |
| Return thermodynamic state from p and h | |
| Return thermodynamic state from p and s | |
| Return thermodynamic state from d and T | |
| Return density from p and h | |
| Return temperature from p and h | |
| Return pressure from d and T | |
| Return specific enthalpy from d and T | |
| Return specific enthalpy from p and s | |
| Return temperature from p and s | |
| Return density from p and s | |
| Return specific enthalpy from p and T | |
| Return density from p and T | |
| Return thermodynamic state as function of p, T and composition X or Xi | |
| Return thermodynamic state as function of p, h and composition X or Xi | |
| Return thermodynamic state as function of p, s and composition X or Xi | |
| Return thermodynamic state as function of d, T and composition X or Xi | |
| Return dynamic viscosity | |
| Return thermal conductivity | |
| Return the Prandtl number | |
| Return pressure | |
| Return temperature | |
| Return density | |
| Return specific enthalpy | |
| Return specific internal energy | |
| Return specific entropy | |
| Return specific Gibbs energy | |
| Return specific Helmholtz energy | |
| Return specific heat capacity at constant pressure | |
| alias for deprecated name | |
| Return specific heat capacity at constant volume | |
| alias for deprecated name | |
| Return isentropic exponent | |
| Return isentropic enthalpy | |
| Return velocity of sound | |
| Return overall the isobaric expansion coefficient beta | |
| alias for isobaricExpansionCoefficient for user convenience | |
| Return overall the isothermal compressibility factor | |
| alias of isothermalCompressibility for user convenience | |
| Return density derivative wrt pressure at const specific enthalpy | |
| Return density derivative wrt specific enthalpy at constant pressure | |
| Return density derivative wrt pressure at const temperature | |
| Return density derivative wrt temperature at constant pressure | |
| Return density derivative wrt mass fraction | |
| Return the molar mass of the medium | |
| Return specific enthalpy from p, T, and X or Xi | |
| Return density from p, T, and X or Xi | |
| Return temperature from p, h, and X or Xi | |
| Return density from p, h, and X or Xi | |
| Return temperature from p,s, and X or Xi | |
| Return density from p, s, and X or Xi | |
| Return specific enthalpy from p, s, and X or Xi | |
| Return bubble point specific enthalpy | |
| Return dew point specific enthalpy | |
| Return bubble point specific entropy | |
| Return dew point specific entropy | |
| Return bubble point density | |
| Return dew point density | |
| Return saturation pressure | |
| Return saturation temperature | |
| Return saturation temperature | |
| Return saturation temperature | |
| Return derivative of saturation temperature w.r.t. pressure | |
| Return derivative of saturation temperature w.r.t. pressure | |
| setState_px | Return thermodynamic state from pressure and vapour quality |
| setState_Tx | Return thermodynamic state from temperature and vapour quality |
| vapourQuality | Return vapour quality |
| Return the thermodynamic state on the dew line | |
| Return the thermodynamic state on the bubble line | |
| Return saturation property record from temperature | |
| Return saturation property record from pressure | |
| Return surface tension sigma in the two phase region | |
| Return bubble point density derivative | |
| Return dew point density derivative | |
| Return bubble point specific enthalpy derivative | |
| Return dew point specific enthalpy derivative | |
| rho_boiling | |
| Choices | Types, constants to define menu choices |