Standard package icon.
Extends from Modelica.Icons.FunctionsPackage
(Icon for packages containing functions).
Name | Description |
---|---|
cp_T | Compute specific heat capacity at constant pressure from temperature and gas data |
cp_Tlow | Compute specific heat capacity at constant pressure, low T region |
cp_Tlow_der | Compute specific heat capacity at constant pressure, low T region |
dynamicViscosityLowPressure | Dynamic viscosity of low pressure gases |
h_T | Compute specific enthalpy from temperature and gas data; reference is decided by the refChoice input, or by the referenceChoice package constant by default |
h_T_der | Derivative function for h_T |
h_Tlow | Compute specific enthalpy, low T region; reference is decided by the refChoice input, or by the referenceChoice package constant by default |
h_Tlow_der | Compute specific enthalpy, low T region; reference is decided by the refChoice input, or by the referenceChoice package constant by default |
s0_T | Compute specific entropy from temperature and gas data |
s0_Tlow | Compute specific entropy, low T region |
s0_Tlow_der | Compute derivative of specific entropy, low T region |
thermalConductivityEstimate | Thermal conductivity of polyatomic gases (Eucken and Modified Eucken correlation) |
Type | Name | Value | Description |
---|---|---|---|
Boolean | excludeEnthalpyOfFormation | true | If true, enthalpy of formation Hf is not included in specific enthalpy h |
SpecificEnthalpy | h_offset | 0 | User defined offset for reference enthalpy, if referenceChoice = UserDefined |
Integer | methodForThermalConductivity | 1 |   |
ReferenceEnthalpy | referenceChoice | Modelica.Media.Interfaces.Choices.ReferenceEnthalpy.ZeroAt0K | Choice of reference enthalpy |
This icon indicates Modelica functions.
Extends from Modelica.Icons.Function
(Icon for functions).
Type | Name | Description |
---|---|---|
DataRecord | data | Ideal gas data |
Temperature | T | Temperature |
Type | Name | Description |
---|---|---|
SpecificHeatCapacity | cp | Specific heat capacity at temperature T |
This icon indicates Modelica functions.
Extends from Modelica.Icons.Function
(Icon for functions).
Type | Name | Description |
---|---|---|
DataRecord | data | Ideal gas data |
Temperature | T | Temperature |
Type | Name | Description |
---|---|---|
SpecificHeatCapacity | cp | Specific heat capacity at temperature T |
This icon indicates Modelica functions.
Extends from Modelica.Icons.Function
(Icon for functions).
Type | Name | Description |
---|---|---|
DataRecord | data | Ideal gas data |
Temperature | T | Temperature |
Real | dT | Temperature derivative |
Type | Name | Description |
---|---|---|
Real | cp_der | Derivative of specific heat capacity |
This icon indicates Modelica functions.
Extends from Modelica.Icons.Function
(Icon for functions).
Type | Name | Description |
---|---|---|
DataRecord | data | Ideal gas data |
Temperature | T | Temperature |
Boolean | exclEnthForm | If true, enthalpy of formation Hf is not included in specific enthalpy h |
ReferenceEnthalpy | refChoice | Choice of reference enthalpy |
SpecificEnthalpy | h_off | User defined offset for reference enthalpy, if referenceChoice = UserDefined |
Type | Name | Description |
---|---|---|
SpecificEnthalpy | h | Specific enthalpy at temperature T |
This icon indicates Modelica functions.
Extends from Modelica.Icons.Function
(Icon for functions).
Type | Name | Description |
---|---|---|
DataRecord | data | Ideal gas data |
Temperature | T | Temperature |
Boolean | exclEnthForm | If true, enthalpy of formation Hf is not included in specific enthalpy h |
ReferenceEnthalpy | refChoice | Choice of reference enthalpy |
SpecificEnthalpy | h_off | User defined offset for reference enthalpy, if referenceChoice = UserDefined |
Real | dT | Temperature derivative |
Type | Name | Description |
---|---|---|
Real | h_der | Specific enthalpy at temperature T |
This icon indicates Modelica functions.
Extends from Modelica.Icons.Function
(Icon for functions).
Type | Name | Description |
---|---|---|
DataRecord | data | Ideal gas data |
Temperature | T | Temperature |
Boolean | exclEnthForm | If true, enthalpy of formation Hf is not included in specific enthalpy h |
ReferenceEnthalpy | refChoice | Choice of reference enthalpy |
SpecificEnthalpy | h_off | User defined offset for reference enthalpy, if referenceChoice = UserDefined |
Type | Name | Description |
---|---|---|
SpecificEnthalpy | h | Specific enthalpy at temperature T |
This icon indicates Modelica functions.
Extends from Modelica.Icons.Function
(Icon for functions).
Type | Name | Description |
---|---|---|
DataRecord | data | Ideal gas data |
Temperature | T | Temperature |
Boolean | exclEnthForm | If true, enthalpy of formation Hf is not included in specific enthalpy h |
ReferenceEnthalpy | refChoice | Choice of reference enthalpy |
SpecificEnthalpy | h_off | User defined offset for reference enthalpy, if referenceChoice = UserDefined |
Real | dT | Temperature derivative |
Type | Name | Description |
---|---|---|
Real | h_der | Derivative of specific enthalpy at temperature T |
This icon indicates Modelica functions.
Extends from Modelica.Icons.Function
(Icon for functions).
Type | Name | Description |
---|---|---|
DataRecord | data | Ideal gas data |
Temperature | T | Temperature |
Type | Name | Description |
---|---|---|
SpecificEntropy | s | Specific entropy at temperature T |
This icon indicates Modelica functions.
Extends from Modelica.Icons.Function
(Icon for functions).
Type | Name | Description |
---|---|---|
DataRecord | data | Ideal gas data |
Temperature | T | Temperature |
Type | Name | Description |
---|---|---|
SpecificEntropy | s | Specific entropy at temperature T |
This icon indicates Modelica functions.
Extends from Modelica.Icons.Function
(Icon for functions).
Type | Name | Description |
---|---|---|
DataRecord | data | Ideal gas data |
Temperature | T | Temperature |
Real | T_der | Temperature derivative |
Type | Name | Description |
---|---|---|
SpecificEntropy | s | Specific entropy at temperature T |
The used formula are based on the method of Chung et al (1984, 1988) referred to in ref [1] chapter 9. The formula 9-4.10 is the one being used. The Formula is given in non-SI units, the following conversion constants were used to transform the formula to SI units:
[1] Bruce E. Poling, John E. Prausnitz, John P. O'Connell, "The Properties of Gases and Liquids" 5th Ed. Mc Graw Hill.
T. Skoglund, Lund, Sweden, 2004-08-31
Extends from Modelica.Icons.Function
(Icon for functions).
Type | Name | Description |
---|---|---|
Temp_K | T | Gas temperature |
Temp_K | Tc | Critical temperature of gas |
MolarMass | M | Molar mass of gas |
MolarVolume | Vc | Critical molar volume of gas |
Real | w | Acentric factor of gas |
DipoleMoment | mu | Dipole moment of gas molecule |
Real | k | Special correction for highly polar substances |
Type | Name | Description |
---|---|---|
DynamicViscosity | eta | Dynamic viscosity of gas |
This function provides two similar methods for estimating the
thermal conductivity of polyatomic gases.
The Eucken method (input method == 1) gives good results for low temperatures,
but it tends to give an underestimated value of the thermal conductivity
(lambda) at higher temperatures.
The Modified Eucken method (input method == 2) gives good results for
high-temperatures, but it tends to give an overestimated value of the
thermal conductivity (lambda) at low temperatures.
Extends from Modelica.Icons.Function
(Icon for functions).
Type | Name | Description |
---|---|---|
SpecificHeatCapacity | Cp | Constant pressure heat capacity |
DynamicViscosity | eta | Dynamic viscosity |
Integer | method | 1: Eucken Method, 2: Modified Eucken Method |
DataRecord | data | Ideal gas data |
Type | Name | Description |
---|---|---|
ThermalConductivity | lambda | Thermal conductivity [W/(m.k)] |
Generated 2018-12-12 12:13:53 EST by MapleSim.