thermalConductivityEstimate

Thermal conductivity of polyatomic gases(Eucken and Modified Eucken correlation)

Information

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

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.

Syntax

lambda = thermalConductivityEstimate(Cp, eta, method, data)

Inputs (4)

Cp

Type: SpecificHeatCapacity (J/(kg·K))

Description: Constant pressure heat capacity

eta

Type: DynamicViscosity (Pa·s)

Description: Dynamic viscosity

method

Default Value: 1

Type: Integer

Description: 1: Eucken Method, 2: Modified Eucken Method

data

Type: DataRecord

Description: Ideal gas data

Outputs (1)

lambda

Type: ThermalConductivity (W/(m·K))

Description: Thermal conductivity [W/(m.k)]