TemplateMediumTemplate for media models |
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Package Contents
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Base properties of medium |
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A selection of variables that uniquely defines the thermodynamic state |
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Return dynamic viscosity |
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Return thermal conductivity |
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Return specific entropy |
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Return specific heat capacity at constant pressure |
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Return specific heat capacity at constant volume |
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Return isentropic exponent |
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Return velocity of sound |
Package Constants (21)
| ThermoStates |
Value: Type: IndependentVariables Description: Enumeration type for independent variables |
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| mediumName |
Value: "NameOfMedium" Type: String Description: Name of the medium |
| substanceNames |
Value: {mediumName} Type: String[:] Description: Names of the mixture substances. Set substanceNames={mediumName} if only one substance. |
| extraPropertiesNames |
Value: fill("", 0) Type: String[:] Description: Names of the additional (extra) transported properties. Set extraPropertiesNames=fill("",0) if unused |
| singleState |
Value: false Type: Boolean Description: = true, if u and d are not a function of pressure |
| reducedX |
Value: true Type: Boolean Description: = true if medium contains the equation sum(X) = 1.0; set reducedX=true if only one substance (see docu for details) |
| fixedX |
Value: true Type: Boolean Description: = true if medium contains the equation X = reference_X |
| reference_p |
Value: 101325 Type: AbsolutePressure (Pa) Description: Reference pressure of Medium: default 1 atmosphere |
| reference_T |
Value: 298.15 Type: Temperature (K) Description: Reference temperature of Medium: default 25 deg Celsius |
| reference_X |
Value: fill(1 / nX, nX) Type: MassFraction[nX] (kg/kg) Description: Default mass fractions of medium |
| p_default |
Value: 101325 Type: AbsolutePressure (Pa) Description: Default value for pressure of medium (for initialization) |
| T_default |
Value: Modelica.SIunits.Conversions.from_degC(20) Type: Temperature (K) Description: Default value for temperature of medium (for initialization) |
| h_default |
Value: specificEnthalpy_pTX(p_default, T_default, X_default) Type: SpecificEnthalpy (J/kg) Description: Default value for specific enthalpy of medium (for initialization) |
| X_default |
Value: reference_X Type: MassFraction[nX] (kg/kg) Description: Default value for mass fractions of medium (for initialization) |
| C_default |
Value: fill(0, nC) Type: ExtraProperty[nC] Description: Default value for trace substances of medium (for initialization) |
| nS |
Value: size(substanceNames, 1) Type: Integer Description: Number of substances |
| nX |
Value: nS Type: Integer Description: Number of mass fractions |
| nXi |
Value: if fixedX then 0 else if reducedX then nS - 1 else nS Type: Integer Description: Number of structurally independent mass fractions (see docu for details) |
| nC |
Value: size(extraPropertiesNames, 1) Type: Integer Description: Number of extra (outside of standard mass-balance) transported properties |
| C_nominal |
Value: 1.0e-6 * ones(nC) Type: Real[nC] Description: Default for the nominal values for the extra properties |
| cp_const |
Value: 123456 Type: SpecificHeatCapacity (J/(kg·K)) Description: Constant specific heat capacity at constant pressure |
Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
This package is a template for new medium models. For a new medium model just make a copy of this package, remove the "partial" keyword from the package and provide the information that is requested in the comments of the Modelica source.