Training Guide > Compressible Flow Tutorials > Intake Tutorial > Setting up the Models
Setting up the Models
Models define the primary variables of the simulation, including pressure, temperature and velocity, and what mathematical formulation will be used to generate the solution. In this example, the flow is turbulent and compressible. The Coupled Flow Model will be used together with the default k-epsilon turbulence model.
- Open the Continua node, right-click the Physics 1 node and select item

- In the Model Selection dialog, clear the Auto-select recommended models checkbox; you are customizing the models for this exercise.
- Select the Gas radio button in the Material group box.

This action changes the types of group boxes in the dialog.
- In the Flow group, select Coupled Flow.
This activates additional group boxes.
Using the same technique as in the previous step:
- Select Stationary in the Motion group box.
- Select Ideal Gas in the Equation of State group box.
- Select Coupled Energy in the Energy group box.
- Select Steady in the Time group box.
- Select Turbulent in the Viscous Regime group box.
- Select Reynolds-Averaged Navier-Stokes in the Turbulence group box.
- Select K-Epsilon Turbulence in the Reynolds-Averaged Turbulence group box.
- Select Standard K-Epsilon in the K-Epsilon Turbulence group box.
- Select High y+ Wall Treatment in the K-Epsilon High y+ Wall Treatment group box.
The Physics Model Selection dialog should look as shown below when you are done.
The remaining models are optional and are not required for this simulation.
- Click Close.
- In the intake window, open the Continua > Physics 1 > Models node. The selected models now appear within that node.

- Save the simulation.
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