Selecting a Non-Adiabatic PPDF Model

In the Physics Model Selection dialog, select option Multi-Component Gas from the Material group.

Specify that your problem involves simulation of chemical reactions by selecting Reacting in the Reaction Regime group.

Select the Non-Premixed Combustion option in the Combustion group.

Select the Non-Adiabatic PPDF option from the Non-Premixed Combustion group, as shown below. At present, this option also selects an equilibrium PPDF model type.

Select the desired solver type, Coupled Flow or Segregated Flow, from the Flow group. If, say, the first option is chosen, the Physics Model Selection dialog will look as shown below.

The remaining selections in this dialog depend on problem characteristics that are not specifically related to simulating combustion:

Select the Explicit Unsteady, Implicit Unsteady or Steady option from the Time group, depending on the nature of your simulation. Note that the first of these three options is not available for the Segregated Flow solver.

Select option Turbulent from the Viscous Regime group as this type of combustion model is only valid for turbulent flows.

If radiative heat transfer is important, select one of the options in the Radiation group.

Select Gravity from the Optional Physics models group if gravity forces significantly influence the solution, e.g. in fire simulations.