Package Modelica.Media.Air.ReferenceAir.Air_pT
ReferenceAir.Air_pT: Detailed dry air model (130 ... 2000 K) explicit in p and T

Information

Usage

The package Air_pT can be used as any other medium model (see User's Guide of Media Library for further information).

Extends from Modelica.Icons.MaterialProperty (Icon for property classes) and Modelica.Media.Air.ReferenceAir.Air_Base (Properties of dry air calculated using the equation of state by Lemmon et. al.).

Package Contents

Name	Description
`AbsolutePressure`	Type for absolute pressure with medium specific attributes
`BaseProperties`	Base properties of air
`Basic` …	The most basic version of a record used in several degrees of detail
`beta`	Alias for isobaricExpansionCoefficient for user convenience
`Choices` …
`CumulativeExtraProperty`	Type for conserved integral of unspecified, mass specific property
`Density`	Type for density with medium specific attributes
`density`	Return density of ideal gas
`density_derh_p`	Density derivative by specific enthalpy
`density_derp_h`	Density derivative by 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
`density_ph`	Computes density as a function of pressure and specific enthalpy
`density_phX`	Return density from p, h, and X or Xi
`density_ps`	Computes density as a function of pressure and specific enthalpy
`density_psX`	Return density from p, s, and X or Xi
`density_pT`	Computes density as a function of pressure and temperature
`density_pTX`	Return density from p, T, and X or Xi
`DerDensityByEnthalpy`	Type for partial derivative of density with respect to enthalpy with medium specific attributes
`DerDensityByPressure`	Type for partial derivative of density with respect to pressure with medium specific attributes
`DerDensityByTemperature`	Type for partial derivative of density with respect to temperature with medium specific attributes
`DerEnthalpyByPressure`	Type for partial derivative of enthalpy with respect to pressure with medium specific attributes
`DerTemperatureByPressure`	Type for partial derivative of temperature with respect to pressure with medium specific attributes
`DipoleMoment`	Type for dipole moment with medium specific attributes
`DynamicViscosity`	Type for dynamic viscosity with medium specific attributes
`dynamicViscosity`	Return dynamic viscosity as a function of the thermodynamic state record
`EnthalpyFlowRate`	Type for enthalpy flow rate with medium specific attributes
`ExtraProperty`	Type for unspecified, mass-specific property transported by flow
`ExtraPropertyFlowRate`	Type for flow rate of unspecified, mass-specific property
`FixedPhase`	Phase of the fluid: 1 for 1-phase, 2 for two-phase, 0 for not known, e.g., interactive use
`FluidConstants`	Critical, triple, molecular and other standard data of fluid
`FluidLimits`	Validity limits for fluid model
`heatCapacity_cp`	Alias for deprecated name
`heatCapacity_cv`	Alias for deprecated name
`IdealGas` …	The ideal gas version of a record used in several degrees of detail
`isentropicEnthalpy`
`IsentropicExponent`	Type for isentropic exponent with medium specific attributes
`isentropicExponent`	Return isentropic exponent
`IsobaricExpansionCoefficient`	Type for isobaric expansion coefficient with medium specific attributes
`isobaricExpansionCoefficient`	Isobaric expansion coefficient of air
`isothermalCompressibility`	Isothermal compressibility of air
`kappa`	Alias of isothermalCompressibility for user convenience
`MassFlowRate`	Type for mass flow rate with medium specific attributes
`MassFraction`	Type for mass fraction with medium specific attributes
`MolarMass`	Type for molar mass with medium specific attributes
`molarMass`	Return the molar mass of the medium
`MolarVolume`	Type for molar volume with medium specific attributes
`MoleFraction`	Type for mole fraction with medium specific attributes
`PrandtlNumber`	Type for Prandtl number with medium specific attributes
`prandtlNumber`	Return the Prandtl number
`pressure`	Return pressure of ideal gas
`pressure_dT`	Computes pressure as a function of density and temperature
`SaturationProperties`	Saturation properties of two phase medium
`setSmoothState`	Return thermodynamic state so that it smoothly approximates: if x > 0 then state_a else state_b
`setState_dT`	Return thermodynamic state from d and T
`setState_dTX`	Return thermodynamic state of air as function of d and T
`setState_ph`	Return thermodynamic state from p and h
`setState_phX`	Return thermodynamic state of air as function of p and h
`setState_ps`	Return thermodynamic state from p and s
`setState_psX`	Return thermodynamic state of air as function of p and s
`setState_pT`	Return thermodynamic state from p and T
`setState_pTX`	Return thermodynamic state of air as function of p and T
`SpecificEnergy`	Type for specific energy with medium specific attributes
`SpecificEnthalpy`	Type for specific enthalpy with medium specific attributes
`specificEnthalpy`	Return specific enthalpy
`specificEnthalpy_dT`	Computes specific enthalpy as a function of density and temperature
`specificEnthalpy_ps`	Computes specific enthalpy as a function of pressure and temperature
`specificEnthalpy_psX`	Return specific enthalpy from p, s, and X or Xi
`specificEnthalpy_pT`	Computes specific enthalpy as a function of pressure and temperature
`specificEnthalpy_pTX`	Return specific enthalpy from p, T, and X or Xi
`SpecificEntropy`	Type for specific entropy with medium specific attributes
`specificEntropy`	Specific entropy of air
`specificEntropy_pTX`	Return specific enthalpy from p, T, and X or Xi
`specificGibbsEnergy`	Return specific Gibbs energy
`SpecificHeatCapacity`	Type for specific heat capacity with medium specific attributes
`specificHeatCapacityCp`	Specific heat capacity at constant pressure of air
`specificHeatCapacityCv`	Specific heat capacity at constant volume of air
`specificHelmholtzEnergy`	Return specific Helmholtz energy
`SpecificInternalEnergy`	Type for specific internal energy with medium specific attributes
`specificInternalEnergy`	Return specific internal energy
`SurfaceTension`	Type for surface tension with medium specific attributes
`Temperature`	Type for temperature with medium specific attributes
`temperature`	Return temperature of ideal gas
`temperature_ph`	Computes temperature as a function of pressure and specific enthalpy
`temperature_phX`	Return temperature from p, h, and X or Xi
`temperature_ps`	Compute temperature from pressure and specific enthalpy
`temperature_psX`	Return temperature from p,s, and X or Xi
`ThermalConductivity`	Type for thermal conductivity with medium specific attributes
`thermalConductivity`	Thermal conductivity of air
`ThermodynamicState`	Thermodynamic state
`TwoPhase` …	The two phase fluid version of a record used in several degrees of detail
`VelocityOfSound`	Type for velocity of sound with medium specific attributes
`velocityOfSound`	Return velocity of sound as a function of the thermodynamic state record

Package Constants

Type	Name	Value	Description
`ExtraProperty`	`C_default[nC]`	`fill(0, nC)`	Default value for trace substances of medium (for initialization)
`Real`	`C_nominal[nC]`	`1e-6 * ones(nC)`	Default for the nominal values for the extra properties
`final` `Boolean`	`dT_explicit`	`false`	True if explicit in density and temperature
`String`	`extraPropertiesNames[:]`	`fill("", 0)`	Names of the additional (extra) transported properties. Set extraPropertiesNames=fill("",0) if unused
`final` `Boolean`	`fixedX`	`true`	= true if medium contains the equation X = reference_X
`SpecificEnthalpy`	`h_default`	`specificEnthalpy_pTX(p_default, T_default, X_default)`	Default value for specific enthalpy of medium (for initialization)
`String`	`mediumName`	`"Air"`	Name of the medium
`final` `Integer`	`nC`	`size(extraPropertiesNames, 1)`	Number of extra (outside of standard mass-balance) transported properties
`final` `Integer`	`nS`	`size(substanceNames, 1)`	Number of substances
`Integer`	`nX`	`nS`	Number of mass fractions
`Integer`	`nXi`	`if fixedX then 0 else if reducedX then nS - 1 else nS`	Number of structurally independent mass fractions (see docu for details)
`AbsolutePressure`	`p_default`	`101325`	Default value for pressure of medium (for initialization)
`final` `Boolean`	`ph_explicit`	`false`	True if explicit in pressure and specific enthalpy
`final` `Boolean`	`pT_explicit`	`true`	True if explicit in pressure and temperature
`final` `Boolean`	`reducedX`	`true`	= true if medium contains the equation sum(X) = 1.0; set reducedX=true if only one substance (see docu for details)
`AbsolutePressure`	`reference_p`	`101325`	Reference pressure of Medium: default 1 atmosphere
`Temperature`	`reference_T`	`298.15`	Reference temperature of Medium: default 25 deg Celsius
`MassFraction`	`reference_X[nX]`	`fill(nX ^ (-1), nX)`	Default mass fractions of medium
`Boolean`	`singleState`	`false`	= true, if u and d are not a function of pressure
`String`	`substanceNames[:]`	`{"air"}`	Names of the mixture substances. Set substanceNames={mediumName} if only one substance.
`Temperature`	`T_default`	`Modelica.SIunits.Conversions.from_degC(20)`	Default value for temperature of medium (for initialization)
`IndependentVariables`	`ThermoStates`	`Modelica.Media.Interfaces.Choices.IndependentVariables.pT`	Enumeration type for independent variables
`MassFraction`	`X_default[nX]`	`reference_X`	Default value for mass fractions of medium (for initialization)

Type Modelica.Media.Air.ReferenceAir.Air_pT.AbsolutePressure
Type for absolute pressure with medium specific attributes

Extends from Modelica.SIunits.AbsolutePressure.

Attributes

Name	Value
`quantity`	`"Pressure"`
`unit`	`"Pa"`
`displayUnit`	`"bar"`
`min`	`1`
`max`	`2e+9`
`start`	`100000`
`nominal`	`100000`

Type Modelica.Media.Air.ReferenceAir.Air_pT.Density
Type for density with medium specific attributes

Extends from Modelica.SIunits.Density.

Attributes

Name	Value
`quantity`	`"Density"`
`unit`	`"kg/m3"`
`displayUnit`	`"g/cm3"`
`min`	`0`
`max`	`100000`
`start`	`1`
`nominal`	`1.2`

Type Modelica.Media.Air.ReferenceAir.Air_pT.DynamicViscosity
Type for dynamic viscosity with medium specific attributes

Extends from Modelica.SIunits.DynamicViscosity.

Attributes

Name	Value
`quantity`	`"DynamicViscosity"`
`unit`	`"Pa.s"`
`min`	`0`
`max`	`1e+8`
`start`	`0.001`
`nominal`	`0.001`

Type Modelica.Media.Air.ReferenceAir.Air_pT.EnthalpyFlowRate
Type for enthalpy flow rate with medium specific attributes

Extends from Modelica.SIunits.EnthalpyFlowRate.

Attributes

Name	Value
`quantity`	`"EnthalpyFlowRate"`
`unit`	`"W"`
`min`	`-1e+8`
`max`	`1e+8`
`start`	`0.`
`nominal`	`1000`

Type Modelica.Media.Air.ReferenceAir.Air_pT.MassFraction
Type for mass fraction with medium specific attributes

Extends from Real.

Attributes

Name	Value
`quantity`	`"MassFraction"`
`unit`	`"kg/kg"`
`min`	`0`
`max`	`1`
`start`	`0.`
`nominal`	`0.1`

Type Modelica.Media.Air.ReferenceAir.Air_pT.MoleFraction
Type for mole fraction with medium specific attributes

Extends from Real.

Attributes

Name	Value
`quantity`	`"MoleFraction"`
`unit`	`"mol/mol"`
`min`	`0`
`max`	`1`
`start`	`0.`
`nominal`	`0.1`

Type Modelica.Media.Air.ReferenceAir.Air_pT.MolarMass
Type for molar mass with medium specific attributes

Extends from Modelica.SIunits.MolarMass.

Attributes

Name	Value
`quantity`	`"MolarMass"`
`unit`	`"kg/mol"`
`min`	`0.001`
`max`	`0.25`
`start`	`0.`
`nominal`	`0.032`

Type Modelica.Media.Air.ReferenceAir.Air_pT.MolarVolume
Type for molar volume with medium specific attributes

Extends from Modelica.SIunits.MolarVolume.

Attributes

Name	Value
`quantity`	`"MolarVolume"`
`unit`	`"m3/mol"`
`min`	`1e-6`
`max`	`1000000`
`start`	`0.`
`nominal`	`1`

Type Modelica.Media.Air.ReferenceAir.Air_pT.IsentropicExponent
Type for isentropic exponent with medium specific attributes

Extends from Modelica.SIunits.RatioOfSpecificHeatCapacities.

Attributes

Name	Value
`quantity`	`"RatioOfSpecificHeatCapacities"`
`unit`	`"1"`
`min`	`1`
`max`	`500000`
`start`	`1.2`
`nominal`	`1.2`

Type Modelica.Media.Air.ReferenceAir.Air_pT.SpecificEnergy
Type for specific energy with medium specific attributes

Extends from Modelica.SIunits.SpecificEnergy.

Attributes

Name	Value
`quantity`	`"SpecificEnergy"`
`unit`	`"J/kg"`
`min`	`-1e+8`
`max`	`1e+8`
`start`	`0.`
`nominal`	`1000000`

Type Modelica.Media.Air.ReferenceAir.Air_pT.SpecificInternalEnergy
Type for specific internal energy with medium specific attributes

Extends from Modelica.Media.Air.ReferenceAir.Air_pT.SpecificEnergy (Type for specific energy with medium specific attributes).

Attributes

Name	Value
`quantity`	`"SpecificEnergy"`
`unit`	`"J/kg"`
`min`	`-1e+8`
`max`	`1e+8`
`start`	`0.`
`nominal`	`1000000`

Type Modelica.Media.Air.ReferenceAir.Air_pT.SpecificEnthalpy
Type for specific enthalpy with medium specific attributes

Extends from Modelica.SIunits.SpecificEnthalpy.

Attributes

Name	Value
`quantity`	`"SpecificEnergy"`
`unit`	`"J/kg"`
`min`	`-1e+10`
`max`	`1e+10`
`start`	`100000`
`nominal`	`500000`

Type Modelica.Media.Air.ReferenceAir.Air_pT.SpecificEntropy
Type for specific entropy with medium specific attributes

Extends from Modelica.SIunits.SpecificEntropy.

Attributes

Name	Value
`quantity`	`"SpecificEntropy"`
`unit`	`"J/(kg.K)"`
`min`	`-1e+7`
`max`	`1e+7`
`start`	`0.`
`nominal`	`1000`

Type Modelica.Media.Air.ReferenceAir.Air_pT.SpecificHeatCapacity
Type for specific heat capacity with medium specific attributes

Extends from Modelica.SIunits.SpecificHeatCapacity.

Attributes

Name	Value
`quantity`	`"SpecificHeatCapacity"`
`unit`	`"J/(kg.K)"`
`min`	`0`
`max`	`1e+7`
`start`	`1000`
`nominal`	`1000`

Type Modelica.Media.Air.ReferenceAir.Air_pT.SurfaceTension
Type for surface tension with medium specific attributes

Extends from Modelica.SIunits.SurfaceTension.

Attributes

Name	Value
`quantity`	`"SurfaceTension"`
`unit`	`"N/m"`
`min`	`-Modelica.Constants.inf`
`max`	`Modelica.Constants.inf`
`start`	`0.`

Type Modelica.Media.Air.ReferenceAir.Air_pT.Temperature
Type for temperature with medium specific attributes

Extends from Modelica.SIunits.Temperature.

Attributes

Name	Value
`quantity`	`"ThermodynamicTemperature"`
`unit`	`"K"`
`displayUnit`	`"degC"`
`min`	`130`
`max`	`2000`
`start`	`273.15`
`nominal`	`293.15`

Type Modelica.Media.Air.ReferenceAir.Air_pT.ThermalConductivity
Type for thermal conductivity with medium specific attributes

Extends from Modelica.SIunits.ThermalConductivity.

Attributes

Name	Value
`quantity`	`"ThermalConductivity"`
`unit`	`"W/(m.K)"`
`min`	`0`
`max`	`500`
`start`	`1`
`nominal`	`1`

Type Modelica.Media.Air.ReferenceAir.Air_pT.PrandtlNumber
Type for Prandtl number with medium specific attributes

Extends from Modelica.SIunits.PrandtlNumber.

Attributes

Name	Value
`quantity`	`"PrandtlNumber"`
`unit`	`"1"`
`min`	`0.001`
`max`	`100000`
`start`	`0.`
`nominal`	`1`

Type Modelica.Media.Air.ReferenceAir.Air_pT.VelocityOfSound
Type for velocity of sound with medium specific attributes

Extends from Modelica.SIunits.Velocity.

Attributes

Name	Value
`quantity`	`"Velocity"`
`unit`	`"m/s"`
`min`	`0`
`max`	`100000`
`start`	`1000`
`nominal`	`1000`

Type Modelica.Media.Air.ReferenceAir.Air_pT.ExtraProperty
Type for unspecified, mass-specific property transported by flow

Extends from Real.

Attributes

Name	Value
`min`	`0`
`max`	`Modelica.Constants.inf`
`start`	`1`

Type Modelica.Media.Air.ReferenceAir.Air_pT.CumulativeExtraProperty
Type for conserved integral of unspecified, mass specific property

Extends from Real.

Attributes

Name	Value
`min`	`0`
`max`	`Modelica.Constants.inf`
`start`	`1`

Type Modelica.Media.Air.ReferenceAir.Air_pT.ExtraPropertyFlowRate
Type for flow rate of unspecified, mass-specific property

Extends from Real.

Attributes

Name	Value
`unit`	`"kg/s"`
`min`	`-Modelica.Constants.inf`
`max`	`Modelica.Constants.inf`
`start`	`0.`

Type Modelica.Media.Air.ReferenceAir.Air_pT.IsobaricExpansionCoefficient
Type for isobaric expansion coefficient with medium specific attributes

Extends from Real.

Attributes

Name	Value
`unit`	`"1/K"`
`min`	`0`
`max`	`1e+8`
`start`	`0.`

Type Modelica.Media.Air.ReferenceAir.Air_pT.DipoleMoment
Type for dipole moment with medium specific attributes

Extends from Real.

Attributes

Name	Value
`quantity`	`"ElectricDipoleMoment"`
`unit`	`"debye"`
`min`	`0`
`max`	`2`
`start`	`0.`

Type Modelica.Media.Air.ReferenceAir.Air_pT.DerDensityByPressure
Type for partial derivative of density with respect to pressure with medium specific attributes

Extends from Modelica.SIunits.DerDensityByPressure.

Attributes

Name	Value
`unit`	`"s2/m2"`
`min`	`-Modelica.Constants.inf`
`max`	`Modelica.Constants.inf`
`start`	`0.`

Type Modelica.Media.Air.ReferenceAir.Air_pT.DerDensityByEnthalpy
Type for partial derivative of density with respect to enthalpy with medium specific attributes

Extends from Modelica.SIunits.DerDensityByEnthalpy.

Attributes

Name	Value
`unit`	`"kg.s2/m5"`
`min`	`-Modelica.Constants.inf`
`max`	`Modelica.Constants.inf`
`start`	`0.`

Type Modelica.Media.Air.ReferenceAir.Air_pT.DerEnthalpyByPressure
Type for partial derivative of enthalpy with respect to pressure with medium specific attributes

Extends from Modelica.SIunits.DerEnthalpyByPressure.

Attributes

Name	Value
`unit`	`"J.m.s2/kg2"`
`min`	`-Modelica.Constants.inf`
`max`	`Modelica.Constants.inf`
`start`	`0.`

Type Modelica.Media.Air.ReferenceAir.Air_pT.DerDensityByTemperature
Type for partial derivative of density with respect to temperature with medium specific attributes

Extends from Modelica.SIunits.DerDensityByTemperature.

Attributes

Name	Value
`unit`	`"kg/(m3.K)"`
`min`	`-Modelica.Constants.inf`
`max`	`Modelica.Constants.inf`
`start`	`0.`

Type Modelica.Media.Air.ReferenceAir.Air_pT.DerTemperatureByPressure
Type for partial derivative of temperature with respect to pressure with medium specific attributes

Extends from Real.

Attributes

Name	Value
`unit`	`"K/Pa"`
`min`	`-Modelica.Constants.inf`
`max`	`Modelica.Constants.inf`
`start`	`0.`

Record Modelica.Media.Air.ReferenceAir.Air_pT.SaturationProperties
Saturation properties of two phase medium

Information

This icon is indicates a record.

Extends from Modelica.Icons.Record (Icon for records).

Fields

Type	Name	Description
`AbsolutePressure`	`psat`	Saturation pressure
`Temperature`	`Tsat`	Saturation temperature

Record Modelica.Media.Air.ReferenceAir.Air_pT.FluidLimits
Validity limits for fluid model

Information

The minimum pressure mostly applies to the liquid state only. The minimum density is also arbitrary, but is reasonable for technical applications to limit iterations in non-linear systems. The limits in enthalpy and entropy are used as safeguards in inverse iterations.

Extends from Modelica.Icons.Record (Icon for records).

Fields

Type	Name	Description
`Temperature`	`TMIN`	Minimum temperature
`Temperature`	`TMAX`	Maximum temperature
`Density`	`DMIN`	Minimum density
`Density`	`DMAX`	Maximum density
`AbsolutePressure`	`PMIN`	Minimum pressure
`AbsolutePressure`	`PMAX`	Maximum pressure
`SpecificEnthalpy`	`HMIN`	Minimum enthalpy
`SpecificEnthalpy`	`HMAX`	Maximum enthalpy
`SpecificEntropy`	`SMIN`	Minimum entropy
`SpecificEntropy`	`SMAX`	Maximum entropy

Type Modelica.Media.Air.ReferenceAir.Air_pT.FixedPhase
Phase of the fluid: 1 for 1-phase, 2 for two-phase, 0 for not known, e.g., interactive use

Extends from Integer.

Attributes

Name	Value
`min`	`0`
`max`	`2`
`start`	`0`

Record Modelica.Media.Air.ReferenceAir.Air_pT.FluidConstants
Critical, triple, molecular and other standard data of fluid

Information

This icon is indicates a record.

Extends from Modelica.Media.Interfaces.Types.Basic.FluidConstants (Critical, triple, molecular and other standard data of fluid).

Fields

Type	Name	Description
`String`	`iupacName`	Complete IUPAC name (or common name, if non-existent)
`String`	`casRegistryNumber`	Chemical abstracts sequencing number (if it exists)
`String`	`chemicalFormula`	Chemical formula, (brutto, nomenclature according to Hill
`String`	`structureFormula`	Chemical structure formula
`MolarMass`	`molarMass`	Molar mass

Record Modelica.Media.Air.ReferenceAir.Air_pT.ThermodynamicState
Thermodynamic state

Information

This icon is indicates a record.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.ThermodynamicState (Minimal variable set that is available as input argument to every medium function).

Fields

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`AbsolutePressure`	`p`	Pressure

Model Modelica.Media.Air.ReferenceAir.Air_pT.BaseProperties
Base properties of air

Information

Model BaseProperties is a model within package PartialMedium and contains the declarations of the minimum number of variables that every medium model is supposed to support. A specific medium inherits from model BaseProperties and provides the equations for the basic properties.

The BaseProperties model contains the following 7+nXi variables (nXi is the number of independent mass fractions defined in package PartialMedium):

Variable	Unit	Description
T	K	temperature
p	Pa	absolute pressure
d	kg/m3	density
h	J/kg	specific enthalpy
u	J/kg	specific internal energy
Xi[nXi]	kg/kg	independent mass fractions m_i/m
R	J/kg.K	gas constant
M	kg/mol	molar mass

In order to implement an actual medium model, one can extend from this base model and add 5 equations that provide relations among these variables. Equations will also have to be added in order to set all the variables within the ThermodynamicState record state.

If standardOrderComponents=true, the full composition vector X[nX] is determined by the equations contained in this base class, depending on the independent mass fraction vector Xi[nXi].

Additional 2 + nXi equations will have to be provided when using the BaseProperties model, in order to fully specify the thermodynamic conditions. The input connector qualifier applied to p, h, and nXi indirectly declares the number of missing equations, permitting advanced equation balance checking by Modelica tools. Please note that this doesn't mean that the additional equations should be connection equations, nor that exactly those variables should be supplied, in order to complete the model. For further information, see the Modelica.Media User's guide, and Section 4.7 (Balanced Models) of the Modelica 3.0 specification.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.BaseProperties.

Parameters

Type	Name	Default	Description
`Boolean`	`preferredMediumStates`	`false`	= true if StateSelect.prefer shall be used for the independent property variables of the medium
`final` `Boolean`	`standardOrderComponents`	`true`	If true, and reducedX = true, the last element of X will be computed from the other ones

Connectors

Type	Name	Description
`input` `InputAbsolutePressure`	`p`	Absolute pressure of medium
`input` `InputMassFraction`	`Xi[nXi]`	Structurally independent mass fractions
`input` `InputSpecificEnthalpy`	`h`	Specific enthalpy of medium

Function Modelica.Media.Air.ReferenceAir.Air_pT.setState_pTX
Return thermodynamic state of air as function of p and T

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.setState_pTX (Return thermodynamic state as function of p, T and composition X or Xi).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Function Modelica.Media.Air.ReferenceAir.Air_pT.setState_phX
Return thermodynamic state of air as function of p and h

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.setState_phX (Return thermodynamic state as function of p, h and composition X or Xi).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Function Modelica.Media.Air.ReferenceAir.Air_pT.setState_psX
Return thermodynamic state of air as function of p and s

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.setState_psX (Return thermodynamic state as function of p, s and composition X or Xi).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Function Modelica.Media.Air.ReferenceAir.Air_pT.setState_dTX
Return thermodynamic state of air as function of d and T

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.setState_dTX (Return thermodynamic state as function of d, T and composition X or Xi).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Function Modelica.Media.Air.ReferenceAir.Air_pT.setSmoothState
Return thermodynamic state so that it smoothly approximates: if x > 0 then state_a else state_b

Information

This function is used to approximate the equation

    state = if x > 0 then state_a else state_b;

by a smooth characteristic, so that the expression is continuous and differentiable:

   state := smooth(1, if x >  x_small then state_a else
                      if x < -x_small then state_b else f(state_a, state_b));

This is performed by applying function Media.Common.smoothStep(..) on every element of the thermodynamic state record.

If mass fractions X[:] are approximated with this function then this can be performed for all nX mass fractions, instead of applying it for nX-1 mass fractions and computing the last one by the mass fraction constraint sum(X)=1. The reason is that the approximating function has the property that sum(state.X) = 1, provided sum(state_a.X) = sum(state_b.X) = 1. This can be shown by evaluating the approximating function in the abs(x) < x_small region (otherwise state.X is either state_a.X or state_b.X):

    X[1]  = smoothStep(x, X_a[1] , X_b[1] , x_small);
    X[2]  = smoothStep(x, X_a[2] , X_b[2] , x_small);
       ...
    X[nX] = smoothStep(x, X_a[nX], X_b[nX], x_small);

    X[1]  = c*(X_a[1]  - X_b[1])  + (X_a[1]  + X_b[1])/2
    X[2]  = c*(X_a[2]  - X_b[2])  + (X_a[2]  + X_b[2])/2;
       ...
    X[nX] = c*(X_a[nX] - X_b[nX]) + (X_a[nX] + X_b[nX])/2;
    c     = (x/x_small)*((x/x_small)^2 - 3)/4

Summing all mass fractions together results in

    sum(X) = c*(sum(X_a) - sum(X_b)) + (sum(X_a) + sum(X_b))/2
           = c*(1 - 1) + (1 + 1)/2
           = 1

Extends from Modelica.Media.Interfaces.PartialPureSubstance.setSmoothState (Return thermodynamic state so that it smoothly approximates: if x > 0 then state_a else state_b).

Inputs

Type	Name	Description
`Real`	`x`	m_flow or dp
`ThermodynamicState`	`state_a`	Thermodynamic state if x > 0
`ThermodynamicState`	`state_b`	Thermodynamic state if x < 0
`Real`	`x_small`	Smooth transition in the region -x_small < x < x_small

Outputs

Type	Name	Description
`ThermodynamicState`	`state`	Smooth thermodynamic state for all x (continuous and differentiable)

Function Modelica.Media.Air.ReferenceAir.Air_pT.dynamicViscosity
Return dynamic viscosity as a function of the thermodynamic state record

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.dynamicViscosity (Return dynamic viscosity).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`DynamicViscosity`	`eta`	Dynamic viscosity

Function Modelica.Media.Air.ReferenceAir.Air_pT.thermalConductivity
Thermal conductivity of air

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.thermalConductivity (Return thermal conductivity).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`ThermalConductivity`	`lambda`	Thermal conductivity

Function Modelica.Media.Air.ReferenceAir.Air_pT.prandtlNumber
Return the Prandtl number

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`PrandtlNumber`	`Pr`	Prandtl number

Function Modelica.Media.Air.ReferenceAir.Air_pT.pressure
Return pressure of ideal gas

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.pressure (Return pressure).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure

Function Modelica.Media.Air.ReferenceAir.Air_pT.temperature
Return temperature of ideal gas

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.temperature (Return temperature).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature

Function Modelica.Media.Air.ReferenceAir.Air_pT.density
Return density of ideal gas

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.density (Return density).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`Density`	`d`	Density

Function Modelica.Media.Air.ReferenceAir.Air_pT.specificEnthalpy
Return specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.specificEnthalpy (Return specific enthalpy).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Air.ReferenceAir.Air_pT.specificInternalEnergy
Return specific internal energy

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.specificInternalEnergy (Return specific internal energy).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificEnergy`	`u`	Specific internal energy

Function Modelica.Media.Air.ReferenceAir.Air_pT.specificEntropy
Specific entropy of air

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.specificEntropy (Return specific entropy).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificEntropy`	`s`	Specific entropy

Function Modelica.Media.Air.ReferenceAir.Air_pT.specificGibbsEnergy
Return specific Gibbs energy

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.specificGibbsEnergy (Return specific Gibbs energy).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificEnergy`	`g`	Specific Gibbs energy

Function Modelica.Media.Air.ReferenceAir.Air_pT.specificHelmholtzEnergy
Return specific Helmholtz energy

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.specificHelmholtzEnergy (Return specific Helmholtz energy).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificEnergy`	`f`	Specific Helmholtz energy

Function Modelica.Media.Air.ReferenceAir.Air_pT.specificHeatCapacityCp
Specific heat capacity at constant pressure of air

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.specificHeatCapacityCp (Return specific heat capacity at constant pressure).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificHeatCapacity`	`cp`	Specific heat capacity at constant pressure

Function Modelica.Media.Air.ReferenceAir.Air_pT.heatCapacity_cp
Alias for deprecated name

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Air.ReferenceAir.Air_pT.specificHeatCapacityCp (Specific heat capacity at constant pressure of air).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificHeatCapacity`	`cp`	Specific heat capacity at constant pressure

Function Modelica.Media.Air.ReferenceAir.Air_pT.specificHeatCapacityCv
Specific heat capacity at constant volume of air

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.specificHeatCapacityCv (Return specific heat capacity at constant volume).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificHeatCapacity`	`cv`	Specific heat capacity at constant volume

Function Modelica.Media.Air.ReferenceAir.Air_pT.heatCapacity_cv
Alias for deprecated name

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Air.ReferenceAir.Air_pT.specificHeatCapacityCv (Specific heat capacity at constant volume of air).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`SpecificHeatCapacity`	`cv`	Specific heat capacity at constant volume

Function Modelica.Media.Air.ReferenceAir.Air_pT.isentropicExponent
Return isentropic exponent

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.isentropicExponent (Return isentropic exponent).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`IsentropicExponent`	`gamma`	Isentropic exponent

Function Modelica.Media.Air.ReferenceAir.Air_pT.isentropicEnthalpy
Return isentropic enthalpy

Information

This function computes an isentropic state transformation:

A medium is in a particular state, refState.
The enthalpy at another state (h_is) shall be computed under the assumption that the state transformation from refState to h_is is performed with a change of specific entropy ds = 0 and the pressure of state h_is is p_downstream and the composition X upstream and downstream is assumed to be the same.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.isentropicEnthalpy (Return isentropic enthalpy).

Inputs

Type	Name	Description
`AbsolutePressure`	`p_downstream`	Downstream pressure
`ThermodynamicState`	`refState`	Reference state for entropy

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h_is`	Isentropic enthalpy

Function Modelica.Media.Air.ReferenceAir.Air_pT.velocityOfSound
Return velocity of sound as a function of the thermodynamic state record

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.velocityOfSound (Return velocity of sound).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`VelocityOfSound`	`a`	Velocity of sound

Function Modelica.Media.Air.ReferenceAir.Air_pT.isobaricExpansionCoefficient
Isobaric expansion coefficient of air

Information

beta is defined as  1/v * der(v,T), with v = 1/d, at constant pressure p.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.isobaricExpansionCoefficient (Return overall the isobaric expansion coefficient beta).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`IsobaricExpansionCoefficient`	`beta`	Isobaric expansion coefficient

Function Modelica.Media.Air.ReferenceAir.Air_pT.beta
Alias for isobaricExpansionCoefficient for user convenience

Information

beta is defined as  1/v * der(v,T), with v = 1/d, at constant pressure p.

Extends from Modelica.Media.Air.ReferenceAir.Air_pT.isobaricExpansionCoefficient (Isobaric expansion coefficient of air).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`IsobaricExpansionCoefficient`	`beta`	Isobaric expansion coefficient

Function Modelica.Media.Air.ReferenceAir.Air_pT.isothermalCompressibility
Isothermal compressibility of air

Information

kappa is defined as - 1/v * der(v,p), with v = 1/d at constant temperature T.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.isothermalCompressibility (Return overall the isothermal compressibility factor).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`IsothermalCompressibility`	`kappa`	Isothermal compressibility

Function Modelica.Media.Air.ReferenceAir.Air_pT.kappa
Alias of isothermalCompressibility for user convenience

Information

kappa is defined as - 1/v * der(v,p), with v = 1/d at constant temperature T.

Extends from Modelica.Media.Air.ReferenceAir.Air_pT.isothermalCompressibility (Isothermal compressibility of air).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`IsothermalCompressibility`	`kappa`	Isothermal compressibility

Function Modelica.Media.Air.ReferenceAir.Air_pT.density_derp_h
Density derivative by pressure

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.density_derp_h (Return density derivative w.r.t. pressure at const specific enthalpy).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`DerDensityByPressure`	`ddph`	Density derivative w.r.t. pressure

Function Modelica.Media.Air.ReferenceAir.Air_pT.density_derh_p
Density derivative by specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.density_derh_p (Return density derivative w.r.t. specific enthalpy at constant pressure).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`DerDensityByEnthalpy`	`ddhp`	Density derivative w.r.t. specific enthalpy

Partial Function Modelica.Media.Air.ReferenceAir.Air_pT.density_derp_T
Return density derivative w.r.t. pressure at const temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`DerDensityByPressure`	`ddpT`	Density derivative w.r.t. pressure

Partial Function Modelica.Media.Air.ReferenceAir.Air_pT.density_derT_p
Return density derivative w.r.t. temperature at constant pressure

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`DerDensityByTemperature`	`ddTp`	Density derivative w.r.t. temperature

Partial Function Modelica.Media.Air.ReferenceAir.Air_pT.density_derX
Return density derivative w.r.t. mass fraction

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`Density`	`dddX[nX]`	Derivative of density w.r.t. mass fraction

Function Modelica.Media.Air.ReferenceAir.Air_pT.molarMass
Return the molar mass of the medium

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Interfaces.PartialPureSubstance.molarMass (Return the molar mass of the medium).

Inputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Outputs

Type	Name	Description
`MolarMass`	`MM`	Mixture molar mass

Function Modelica.Media.Air.ReferenceAir.Air_pT.specificEnthalpy_pTX
Return specific enthalpy from p, T, and X or Xi

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Air.ReferenceAir.Air_pT.specificEntropy_pTX
Return specific enthalpy from p, T, and X or Xi

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`SpecificEntropy`	`s`	Specific entropy

Function Modelica.Media.Air.ReferenceAir.Air_pT.density_pTX
Return density from p, T, and X or Xi

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`Density`	`d`	Density

Function Modelica.Media.Air.ReferenceAir.Air_pT.temperature_phX
Return temperature from p, h, and X or Xi

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature

Function Modelica.Media.Air.ReferenceAir.Air_pT.density_phX
Return density from p, h, and X or Xi

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`Density`	`d`	Density

Function Modelica.Media.Air.ReferenceAir.Air_pT.temperature_psX
Return temperature from p,s, and X or Xi

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature

Function Modelica.Media.Air.ReferenceAir.Air_pT.density_psX
Return density from p, s, and X or Xi

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`Density`	`d`	Density

Function Modelica.Media.Air.ReferenceAir.Air_pT.specificEnthalpy_psX
Return specific enthalpy from p, s, and X or Xi

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy
`MassFraction`	`X[:]`	Mass fractions

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Type Modelica.Media.Air.ReferenceAir.Air_pT.MassFlowRate
Type for mass flow rate with medium specific attributes

Extends from Modelica.SIunits.MassFlowRate.

Attributes

Name	Value
`quantity`	`"MassFlowRate." + mediumName`
`unit`	`"kg/s"`
`min`	`-100000`
`max`	`100000`
`start`	`0.`

Function Modelica.Media.Air.ReferenceAir.Air_pT.setState_pT
Return thermodynamic state from p and T

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`Temperature`	`T`	Temperature

Outputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Function Modelica.Media.Air.ReferenceAir.Air_pT.setState_ph
Return thermodynamic state from p and h

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy

Outputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Function Modelica.Media.Air.ReferenceAir.Air_pT.setState_ps
Return thermodynamic state from p and s

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy

Outputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Function Modelica.Media.Air.ReferenceAir.Air_pT.setState_dT
Return thermodynamic state from d and T

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature

Outputs

Type	Name	Description
`ThermodynamicState`	`state`	Thermodynamic state record

Function Modelica.Media.Air.ReferenceAir.Air_pT.density_ph
Computes density as a function of pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy

Outputs

Type	Name	Description
`Density`	`d`	Density

Function Modelica.Media.Air.ReferenceAir.Air_pT.temperature_ph
Computes temperature as a function of pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature

Function Modelica.Media.Air.ReferenceAir.Air_pT.pressure_dT
Computes pressure as a function of density and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature

Outputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure

Function Modelica.Media.Air.ReferenceAir.Air_pT.specificEnthalpy_dT
Computes specific enthalpy as a function of density and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Air.ReferenceAir.Air_pT.specificEnthalpy_ps
Computes specific enthalpy as a function of pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Air.ReferenceAir.Air_pT.temperature_ps
Compute temperature from pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature

Function Modelica.Media.Air.ReferenceAir.Air_pT.density_ps
Computes density as a function of pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy

Outputs

Type	Name	Description
`Density`	`d`	Density

Function Modelica.Media.Air.ReferenceAir.Air_pT.specificEnthalpy_pT
Computes specific enthalpy as a function of pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`Temperature`	`T`	Temperature

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Air.ReferenceAir.Air_pT.density_pT
Computes density as a function of pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`AbsolutePressure`	`p`	Pressure
`Temperature`	`T`	Temperature

Outputs

Type	Name	Description
`Density`	`d`	Density

Package Modelica.​Media.​Air.​ReferenceAir.​Air_pTReferenceAir.Air_pT: Detailed dry air model (130 ... 2000 K) explicit in p and T

Information

Usage

Package Contents

Package Constants

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​AbsolutePressureType for absolute pressure with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​DensityType for density with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​DynamicViscosityType for dynamic viscosity with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​EnthalpyFlowRateType for enthalpy flow rate with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​MassFractionType for mass fraction with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​MoleFractionType for mole fraction with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​MolarMassType for molar mass with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​MolarVolumeType for molar volume with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​IsentropicExponentType for isentropic exponent with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​SpecificEnergyType for specific energy with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​SpecificInternalEnergyType for specific internal energy with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​SpecificEnthalpyType for specific enthalpy with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​SpecificEntropyType for specific entropy with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​SpecificHeatCapacityType for specific heat capacity with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​SurfaceTensionType for surface tension with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​TemperatureType for temperature with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​ThermalConductivityType for thermal conductivity with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​PrandtlNumberType for Prandtl number with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​VelocityOfSoundType for velocity of sound with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​ExtraPropertyType for unspecified, mass-specific property transported by flow

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​CumulativeExtraPropertyType for conserved integral of unspecified, mass specific property

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​ExtraPropertyFlowRateType for flow rate of unspecified, mass-specific property

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​IsobaricExpansionCoefficientType for isobaric expansion coefficient with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​DipoleMomentType for dipole moment with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​DerDensityByPressureType for partial derivative of density with respect to pressure with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​DerDensityByEnthalpyType for partial derivative of density with respect to enthalpy with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​DerEnthalpyByPressureType for partial derivative of enthalpy with respect to pressure with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​DerDensityByTemperatureType for partial derivative of density with respect to temperature with medium specific attributes

Attributes

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​DerTemperatureByPressureType for partial derivative of temperature with respect to pressure with medium specific attributes

Attributes

Record Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​SaturationPropertiesSaturation properties of two phase medium

Information

Fields

Record Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​FluidLimitsValidity limits for fluid model

Information

Fields

Type Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​FixedPhasePhase of the fluid: 1 for 1-phase, 2 for two-phase, 0 for not known, e.g., interactive use

Attributes

Record Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​FluidConstantsCritical, triple, molecular and other standard data of fluid

Information

Fields

Record Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​ThermodynamicStateThermodynamic state

Information

Fields

Model Modelica.​Media.​Air.​ReferenceAir.​Air_pT.​BasePropertiesBase properties of air

Information

Parameters

Package Modelica.Media.Air.ReferenceAir.Air_pT
ReferenceAir.Air_pT: Detailed dry air model (130 ... 2000 K) explicit in p and T

Type Modelica.Media.Air.ReferenceAir.Air_pT.AbsolutePressure
Type for absolute pressure with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.Density
Type for density with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.DynamicViscosity
Type for dynamic viscosity with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.EnthalpyFlowRate
Type for enthalpy flow rate with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.MassFraction
Type for mass fraction with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.MoleFraction
Type for mole fraction with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.MolarMass
Type for molar mass with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.MolarVolume
Type for molar volume with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.IsentropicExponent
Type for isentropic exponent with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.SpecificEnergy
Type for specific energy with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.SpecificInternalEnergy
Type for specific internal energy with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.SpecificEnthalpy
Type for specific enthalpy with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.SpecificEntropy
Type for specific entropy with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.SpecificHeatCapacity
Type for specific heat capacity with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.SurfaceTension
Type for surface tension with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.Temperature
Type for temperature with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.ThermalConductivity
Type for thermal conductivity with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.PrandtlNumber
Type for Prandtl number with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.VelocityOfSound
Type for velocity of sound with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.ExtraProperty
Type for unspecified, mass-specific property transported by flow

Type Modelica.Media.Air.ReferenceAir.Air_pT.CumulativeExtraProperty
Type for conserved integral of unspecified, mass specific property

Type Modelica.Media.Air.ReferenceAir.Air_pT.ExtraPropertyFlowRate
Type for flow rate of unspecified, mass-specific property

Type Modelica.Media.Air.ReferenceAir.Air_pT.IsobaricExpansionCoefficient
Type for isobaric expansion coefficient with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.DipoleMoment
Type for dipole moment with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.DerDensityByPressure
Type for partial derivative of density with respect to pressure with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.DerDensityByEnthalpy
Type for partial derivative of density with respect to enthalpy with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.DerEnthalpyByPressure
Type for partial derivative of enthalpy with respect to pressure with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.DerDensityByTemperature
Type for partial derivative of density with respect to temperature with medium specific attributes

Type Modelica.Media.Air.ReferenceAir.Air_pT.DerTemperatureByPressure
Type for partial derivative of temperature with respect to pressure with medium specific attributes

Record Modelica.Media.Air.ReferenceAir.Air_pT.SaturationProperties
Saturation properties of two phase medium

Record Modelica.Media.Air.ReferenceAir.Air_pT.FluidLimits
Validity limits for fluid model

Type Modelica.Media.Air.ReferenceAir.Air_pT.FixedPhase
Phase of the fluid: 1 for 1-phase, 2 for two-phase, 0 for not known, e.g., interactive use

Record Modelica.Media.Air.ReferenceAir.Air_pT.FluidConstants
Critical, triple, molecular and other standard data of fluid

Record Modelica.Media.Air.ReferenceAir.Air_pT.ThermodynamicState
Thermodynamic state

Model Modelica.Media.Air.ReferenceAir.Air_pT.BaseProperties
Base properties of air

Function Modelica.Media.Air.ReferenceAir.Air_pT.setState_pTX
Return thermodynamic state of air as function of p and T

Function Modelica.Media.Air.ReferenceAir.Air_pT.setState_phX
Return thermodynamic state of air as function of p and h

Function Modelica.Media.Air.ReferenceAir.Air_pT.setState_psX
Return thermodynamic state of air as function of p and s

Function Modelica.Media.Air.ReferenceAir.Air_pT.setState_dTX
Return thermodynamic state of air as function of d and T

Function Modelica.Media.Air.ReferenceAir.Air_pT.setSmoothState
Return thermodynamic state so that it smoothly approximates: if x > 0 then state_a else state_b

Function Modelica.Media.Air.ReferenceAir.Air_pT.dynamicViscosity
Return dynamic viscosity as a function of the thermodynamic state record

Function Modelica.Media.Air.ReferenceAir.Air_pT.thermalConductivity
Thermal conductivity of air

Function Modelica.Media.Air.ReferenceAir.Air_pT.prandtlNumber
Return the Prandtl number

Function Modelica.Media.Air.ReferenceAir.Air_pT.pressure
Return pressure of ideal gas

Function Modelica.Media.Air.ReferenceAir.Air_pT.temperature
Return temperature of ideal gas

Function Modelica.Media.Air.ReferenceAir.Air_pT.density
Return density of ideal gas

Function Modelica.Media.Air.ReferenceAir.Air_pT.specificEnthalpy
Return specific enthalpy

Function Modelica.Media.Air.ReferenceAir.Air_pT.specificInternalEnergy
Return specific internal energy

Function Modelica.Media.Air.ReferenceAir.Air_pT.specificEntropy
Specific entropy of air

Function Modelica.Media.Air.ReferenceAir.Air_pT.specificGibbsEnergy
Return specific Gibbs energy

Function Modelica.Media.Air.ReferenceAir.Air_pT.specificHelmholtzEnergy
Return specific Helmholtz energy

Function Modelica.Media.Air.ReferenceAir.Air_pT.specificHeatCapacityCp
Specific heat capacity at constant pressure of air

Function Modelica.Media.Air.ReferenceAir.Air_pT.heatCapacity_cp
Alias for deprecated name