To gain access to the continuum, open the Continua node, which contains the default Physics 1 node.
Right-click on the Physics 1 node and select the Select models... pop-up menu item.
In the Physics Model Selection dialog, select the Gas radio button in the Material group box, since this exercise involves an idealized gas (air).
This action changes the types of group boxes in the dialog. Since the Auto-select recommended models checkbox is ticked, the Physics Model Selection dialog will guide you through the model selection process by automatically selecting certain default models as you make some choices.
Certain models, when activated in a continuum, require other models also to be enabled in that continuum. For instance, once a continuum contains a liquid or a gas, it needs a flow model. Once it has a flow model it needs a viscous model (inviscid, laminar or turbulent). Once turbulence is enabled within a fluid continuum, a turbulence model must be selected. The prompt Additional model selections are required alerts you to the fact that you have not completed the model selection.
Select the Stationary radio button in the Motion group box.
Using the same technique as in the previous step:
The Physics Model Selection dialog should resemble this when you are done with the selections.
The optional models are not required for this simulation. Click Close.
To reverse part or all of the model selection process, simply clear the checkboxes of the model(s) you wish to deselect. The selections that are grayed out may not be disabled, since they are required by other (non-grayed-out) models. Therefore, deselect the non-grayed-out models first.
To see the selected models in the simulation tree, open the Continua node in the bluntBody window of the Explorer pane. The color of the Physics 1 node has turned from gray to blue to indicate that models have been activated. Open the Physics 1 node and then the Models node to display the selected models.
