To select a Material model, open the Continua node of the simulation tree, then right-click a physics continuum node such as Physics 1. Select the Select models... item from the pop-up menu.
This opens the Physics Model Selection dialog. Select the correct type of Material model for the simulation by clicking the relevant radio button. For example, the figure below shows the single component Gas material model being selected.
The dialog should now show the model enabled, with model options other than materials remaining to be selected.
