packagePartialSimpleMedium
Medium model with linear dependency of u, h from temperature. All other quantities, especially density, are constant.
Extends from Interfaces.PartialPureSubstance (Base class for pure substances of one chemical substance).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Media.Interfaces.Choices.IndependentVariables | ThermoStates (from PartialMedium) | Enumeration type for independent variables | |
| String | mediumName (from PartialMedium) | "unusablePartialMedium" | Name of the medium |
| String[:] | substanceNames (from PartialMedium) | {mediumName} | Names of the mixture substances. Set substanceNames={mediumName} if only one substance. |
| String[:] | extraPropertiesNames (from PartialMedium) | fill("", 0) | Names of the additional (extra) transported properties. Set extraPropertiesNames=fill("",0) if unused |
| Boolean | singleState (from PartialMedium) | = true, if u and d are not a function of pressure | |
| Boolean | reducedX (from PartialMedium) | true | = true, if medium contains the equation sum(X) = 1.0; set reducedX=true, if only one substance (see docu for details) |
| Boolean | fixedX (from PartialMedium) | false | = true, if medium contains the equation X = reference_X |
| AbsolutePressure | reference_p (from PartialMedium) | 101325 | Reference pressure of Medium: default 1 atmosphere |
| Temperature | reference_T (from PartialMedium) | 298.15 | Reference temperature of Medium: default 25 deg Celsius |
| MassFraction[nX] | reference_X (from PartialMedium) | fill(1/nX, nX) | Default mass fractions of medium |
| AbsolutePressure | p_default (from PartialMedium) | 101325 | Default value for pressure of medium (for initialization) |
| Temperature | T_default (from PartialMedium) | Modelica.Units.Conversions.from_degC(20) | Default value for temperature of medium (for initialization) |
| SpecificEnthalpy | h_default (from PartialMedium) | specificEnthalpy_pTX(p_default, T_default, X_default) | Default value for specific enthalpy of medium (for initialization) |
| MassFraction[nX] | X_default (from PartialMedium) | reference_X | Default value for mass fractions of medium (for initialization) |
| ExtraProperty[nC] | C_default (from PartialMedium) | fill(0, nC) | Default value for trace substances of medium (for initialization) |
| Integer | nS (from PartialMedium) | size(substanceNames, 1) | Number of substances |
| Integer | nX (from PartialMedium) | nS | Number of mass fractions |
| Integer | nXi (from PartialMedium) | if fixedX then 0 else if reducedX then nS - 1 else nS | Number of structurally independent mass fractions (see docu for details) |
| Integer | nC (from PartialMedium) | size(extraPropertiesNames, 1) | Number of extra (outside of standard mass-balance) transported properties |
| Real[nC] | C_nominal (from PartialMedium) | 1.0e-6*ones(nC) | Default for the nominal values for the extra properties |
| SpecificHeatCapacity | cp_const | Constant specific heat capacity at constant pressure | |
| SpecificHeatCapacity | cv_const | Constant specific heat capacity at constant volume | |
| Density | d_const | Constant density | |
| DynamicViscosity | eta_const | Constant dynamic viscosity | |
| ThermalConductivity | lambda_const | Constant thermal conductivity | |
| VelocityOfSound | a_const | Constant velocity of sound | |
| Temperature | T_min | Minimum temperature valid for medium model | |
| Temperature | T_max | Maximum temperature valid for medium model | |
| Temperature | T0 | reference_T | Zero enthalpy temperature |
| MolarMass | MM_const | Molar mass | |
| FluidConstants | fluidConstants | Fluid constants |
Contents
| Name | Description |
|---|---|
 ThermodynamicState | Thermodynamic state |
 BaseProperties | Base properties |
 setState_pTX | Return thermodynamic state from p, T, and X or Xi |
 setState_phX | Return thermodynamic state from p, h, and X or Xi |
 setState_psX | Return thermodynamic state from p, s, and X or Xi |
 setState_dTX | Return thermodynamic state from d, T, and 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 |
 pressure | Return pressure |
 temperature | Return temperature |
 density | Return density |
 specificEnthalpy | Return specific enthalpy |
 specificHeatCapacityCp | Return specific heat capacity at constant pressure |
 specificHeatCapacityCv | Return specific heat capacity at constant volume |
 isentropicExponent | Return isentropic exponent |
 velocityOfSound | Return velocity of sound |
 specificEnthalpy_pTX | Return specific enthalpy 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 |
 specificInternalEnergy | Return specific internal energy |
 specificEntropy | Return specific entropy |
 specificGibbsEnergy | Return specific Gibbs energy |
 specificHelmholtzEnergy | Return specific Helmholtz energy |
 isentropicEnthalpy | Return isentropic enthalpy |
 isobaricExpansionCoefficient | Returns overall the isobaric expansion coefficient beta |
 isothermalCompressibility | Returns overall the isothermal compressibility factor |
 density_derp_T | Returns the partial derivative of density with respect to pressure at constant temperature |
 density_derT_p | Returns the partial derivative of density with respect to temperature at constant pressure |
 density_derX | Returns the partial derivative of density with respect to mass fractions at constant pressure and temperature |
 molarMass | Return the molar mass of the medium |