WOLFRAM SYSTEM MODELER

PartialTwoPhaseMedium

Base class for two phase medium of one substance

Package Contents

	ThermodynamicState Thermodynamic state of two phase medium
	BaseProperties Base properties (p, d, T, h, u, R_s, MM, sat) of two phase medium
	setDewState Return the thermodynamic state on the dew line
	setBubbleState Return the thermodynamic state on the bubble line
	setState_dTX Return thermodynamic state as function of d, 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_pTX Return thermodynamic state as function of p, T and composition X or Xi
	setSat_T Return saturation property record from temperature
	setSat_p Return saturation property record from pressure
	bubbleEnthalpy Return bubble point specific enthalpy
	dewEnthalpy Return dew point specific enthalpy
	bubbleEntropy Return bubble point specific entropy
	dewEntropy Return dew point specific entropy
	bubbleDensity Return bubble point density
	dewDensity Return dew point density
	saturationPressure Return saturation pressure
	saturationTemperature Return saturation temperature
	saturationPressure_sat Return saturation pressure
	saturationTemperature_sat Return saturation temperature
	saturationTemperature_derp Return derivative of saturation temperature w.r.t. pressure
	saturationTemperature_derp_sat Return derivative of saturation temperature w.r.t. pressure
	surfaceTension Return surface tension sigma in the two phase region
	molarMass Return the molar mass of the medium
	dBubbleDensity_dPressure Return bubble point density derivative
	dDewDensity_dPressure Return dew point density derivative
	dBubbleEnthalpy_dPressure Return bubble point specific enthalpy derivative
	dDewEnthalpy_dPressure Return dew point specific enthalpy derivative
	specificEnthalpy_pTX Return specific enthalpy from pressure, temperature and mass fraction
	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
	setState_pT Return thermodynamic state from p and T
	setState_ph Return thermodynamic state from p and h
	setState_ps Return thermodynamic state from p and s
	setState_dT Return thermodynamic state from d and T
	setState_px Return thermodynamic state from pressure and vapour quality
	setState_Tx Return thermodynamic state from temperature and vapour quality
	vapourQuality Return vapour quality
	density_ph Return density from p and h
	temperature_ph Return temperature from p and h
	pressure_dT Return pressure from d and T
	specificEnthalpy_dT Return specific enthalpy from d and T
	specificEnthalpy_ps Return specific enthalpy from p and s
	temperature_ps Return temperature from p and s
	density_ps Return density from p and s
	specificEnthalpy_pT Return specific enthalpy from p and T
	density_pT Return density from p and T

Package Constants (23)

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: 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
smoothModel	Value: false Type: Boolean Description: True if the (derived) model should not generate state events
onePhase	Value: false Type: Boolean Description: True if the (derived) model should never be called with two-phase inputs
fluidConstants	Value: Type: FluidConstants[nS] Description: Constant data for the fluid

Wolfram Language

In[1]:=

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

Out[1]:=

Extended by (2)

WaterIF97_base

Modelica.Media.Water

Water: Steam properties as defined by IAPWS/IF97 standard

R134a_ph

Modelica.Media.R134a

Medium model for R134a and p,h as states

Enable JavaScript to interact with content and submit forms on Wolfram websites. Learn how »