Thermal conductivity is computed from temperature using a simple polynomial for dry air. Range of validity is from 123.15 K to 1273.15 K. The influence of pressure is neglected.
Source: VDI Waermeatlas, 8th edition.
function thermalConductivity extends Modelica.Icons.Function; input ThermodynamicState state "Thermodynamic state record"; input Integer method = 1 "Dummy for compatibility reasons"; output ThermalConductivity lambda "Thermal conductivity"; import Modelica.Math.Polynomials; end thermalConductivity;