Setting Up the Physics Models

Select the physics models for the gas.

The boundaries read in from file hex.ccm already have suitable names. Rename the region:

  1. Rename the Regions > Default_Fluid node to Fluid.
  2. Open the Fluid > Boundaries node.
  3. Select each boundary node in turn.
    The corresponding boundary location is shown in the geometry scene.

Suitable models must be chosen for the simulation, as follows:

  1. Open the Continua node.
  2. Right-click the Physics 1 node and choose Select models.
  3. In the Physics 1 Model Selection dialog, select the following models, in order:
    Group Box Model
    Material Gas
    Flow Segregated Flow
    Equation of State Constant Density
    Time Steady
    Viscous Regime Turbulent
    Reynolds-Averaged Turbulence K-Epsilon Turbulence
    In the hexMesh window, the color of the Physics 1 node has turned from gray to blue to indicate that models have been activated.
  4. Click Close.
  5. Open the Physics 1 > Models node to see the selected models.

The default material properties for air and the reference values are suitable for this simulation.