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WOLFRAM SYSTEM MODELER

PartialMedium

Partial medium properties (base package of all media packages)

Package Contents

	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
	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 (kg/s) Type for mass flow rate with medium specific attributes

Package Constants (20)

ThermoStates	Value: Type: IndependentVariables Description: Enumeration type for independent variables
mediumName	Value: "unusablePartialMedium" 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: 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: false 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

Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

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.

Wolfram Language

In[1]:=

SystemModel["Modelica.Media.Interfaces.PartialMedium"]

Out[1]:=

Extended by (28)

	TableBased Modelica.Media.Incompressible Incompressible medium properties based on tables
	PartialMixtureMedium Modelica.Media.Interfaces Base class for pure substances of several chemical substances
	PartialPureSubstance Modelica.Media.Interfaces Base class for pure substances of one chemical substance
	TemplateMedium Modelica.Media.Interfaces Template for media models
	Medium Modelica.Media.Examples.Utilities.PartialTestModel2 Medium model
	Medium Modelica.Media.Examples.Utilities.PartialTestModel Medium model
	Medium Modelica.Media.Examples.Utilities.ShortPipe Medium model
	Medium Modelica.Media.Examples.Utilities.FixedAmbient Medium model
	Medium Modelica.Media.Examples.Utilities.FixedMassFlowRate Medium model
	Medium Modelica.Media.Examples.Utilities.PortVolume Medium model
	Medium Modelica.Media.Examples.Utilities.FluidPort Medium model
	Medium Modelica.Fluid.Interfaces.PartialDistributedFlow Medium in the component
	Medium Modelica.Fluid.Interfaces.PartialDistributedVolume Medium in the component
	Medium Modelica.Fluid.Interfaces.PartialLumpedFlow Medium in the component
	Medium Modelica.Fluid.Interfaces.PartialLumpedVolume Medium in the component
	Medium Modelica.Fluid.Interfaces.PartialHeatTransfer Medium in the component
	Medium Modelica.Fluid.Interfaces.PartialTwoPort Medium in the component
	Medium Modelica.Fluid.Interfaces.FluidPort Medium model
	Medium Modelica.Fluid.Sensors.BaseClasses.PartialRelativeSensor Medium in the sensor
	Medium Modelica.Fluid.Sensors.BaseClasses.PartialAbsoluteSensor Medium in the sensor
	Medium Modelica.Fluid.Sources.BaseClasses.PartialFlowSource Medium model within the source
	Medium Modelica.Fluid.Sources.BaseClasses.PartialSource Medium model within the source
	Medium Modelica.Fluid.Fittings.BaseClasses.PartialTeeJunction Medium in the component
	Medium Modelica.Fluid.Fittings.MultiPort
	Medium Modelica.Fluid.Machines.BaseClasses.PumpMonitoring.PumpMonitoringBase Medium in the component
	Medium Modelica.Fluid.Pipes.BaseClasses.FlowModels.PartialStaggeredFlowModel Medium in the component
	Medium Modelica.Fluid.System Medium model for default start values
	Medium Modelica.Fluid.Examples.AST_BatchPlant.BaseClasses.InnerTank Medium in the component