Package Constants (31)

ThermoStates	Value: Modelica.Media.Interfaces.Choices.IndependentVariables.pT Type: IndependentVariables Description: Enumeration type for independent variables
mediumName	Value: "SimpleAir" 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.Units.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: 1005.45 Type: SpecificHeatCapacity (J/(kg·K)) Description: Constant specific heat capacity at constant pressure
cv_const	Value: cp_const - R_gas Type: SpecificHeatCapacity (J/(kg·K)) Description: Constant specific heat capacity at constant volume
R_gas	Value: Constants.R / 0.0289651159 Type: SpecificHeatCapacity (J/(kg·K)) Description: Medium specific gas constant
MM_const	Value: 0.0289651159 Type: MolarMass (kg/mol) Description: Molar mass
eta_const	Value: 1.82e-5 Type: DynamicViscosity (Pa·s) Description: Constant dynamic viscosity
lambda_const	Value: 0.026 Type: ThermalConductivity (W/(m·K)) Description: Constant thermal conductivity
T_min	Value: Cv.from_degC(0) Type: Temperature (K) Description: Minimum temperature valid for medium model
T_max	Value: Cv.from_degC(100) Type: Temperature (K) Description: Maximum temperature valid for medium model
T0	Value: reference_T Type: Temperature (K) Description: Zero enthalpy temperature
fluidConstants	Value: airConstants Type: FluidConstants[nS] Description: Fluid constants
airConstants	Value: {Modelica.Media.Interfaces.Types.Basic.FluidConstants(iupacName = "simple air", casRegistryNumber = "not a real substance", chemicalFormula = "N2, O2", structureFormula = "N2, O2", molarMass = Modelica.Media.IdealGases.Common.SingleGasesData.N2.MM)} Type: FluidConstants[nS] Description: Constant data for the fluid

SimpleAir

Package Constants (31)

Information

Simple Ideal gas air model for low temperatures