17.2 Using the Premixed Combustion Model

The procedure for setting up and solving a premixed combustion model is outlined below, and then described in detail. Remember that only the steps that are pertinent to premixed combustion modeling are shown here. For information about inputs related to other models that you are using in conjunction with the premixed combustion model, see the appropriate sections for those models.

1.   Enable the premixed turbulent combustion model and set the related parameters.

Models Species Edit...

2.   Define the physical properties for the unburnt and burnt material in the domain.

Materials Create/Edit...

3.   Set the value of the progress variable $c$ at flow inlets and exits.

Boundary Conditions

4.   Initialize the value of the progress variable.

Solution Initialization Patch...

5.   Solve the problem and perform postprocessing.

If you are interested in computing the concentrations of individual species in the domain, you can use the partially premixed model described in Chapter  18. Alternatively, compositions of the unburnt and burnt mixtures can be obtained from external analyses using equilibrium or kinetic calculations.