Material Properties
Conductivity
Use
Conductivity under the
Heat module to specify the option to compute the thermal
conductivity. You can specify the
Conductivity for a selected
Domain under the
Heat module in the Properties panel.
• Constant Prandtl Number—Thermal conductivity for a selected Domain in terms of Prandtl number based on a fixed value or an expression.
• Constant Conductivity—Thermal conductivity for a selected Domain directly by Constant Conductivity (W/m-K).
Enthalpy Model
Use the
Enthalpy Model to specify the option for computing the relationship between
temperature and
enthalpy. You can specify the
Enthalpy Model for a selected
Domain under the
Heat module in the Properties panel. The options are listed below:
• Constant Capacity—Sets the value of the capacity (
heat capacity Cp) for the
Constant Capacity under the
Enthalpy Model.
• JANAF Table—Specifies the enthalpy model for a selected volume using the JANAF Table. The JANAF Table option is where coefficients for a polynomial function of temperature are entered corresponding to values from JANAF data.
• User Defined Enthalpy—User-defined enthalpy model to compute h=f(T), the dependence of
enthalpy on
temperature.
The
enthalpy expression must be formulated in units of energy per unit mass (J/kg) and should be a function of
temperature and local specific heat (Cp). The local specific heat is a function of
temperature and species Cp=f(T,Species).