Setting Up the Models

Models define the primary variables of the simulation, including pressure, temperature and velocity, and what mathematical formulation is used to generate the solution. In this example, the flow is turbulent and incompressible. Use the Segregated Flow model together with the standard K-Epsilon turbulence model.

The default continuum is automatically named Physics 1 when the mesh is imported.

  1. To give the continuum a more appropriate name, rename the Continua > Physics 1 node to Air.
  2. For the physics continuum Continua > Air, select the following models, in order:
    Group Box Model
    Space Three-Dimensional (Selected automatically)
    Material Gas
    Flow Segregated Flow
    Equation of State Constant Density
    Time Steady
    Viscous Regime Turbulent
    Reynolds-Averaged Navier-Stokes (Selected automatically)
  3. Deactivate Auto-select recommended physics models.
    This is because the standard K-Epsilon model is used in this case instead of the realizable two-layer K-Epsilon model, which is the Simcenter STAR-CCM+ default.
  4. Select the following models, in order:
    Group Box Model
    Reynolds-Averaged Turbulence K-Epsilon Turbulence
    K-Epsilon Turbulence Models Standard K-Epsilon
    Wall Distance (Selected automatically)
    K-Epsilon High y+ Wall Treatment High y+ Wall Treatment
    The color of the Air node has turned from gray to blue to indicate that models have been activated.
  5. To see the selected models, expand the Air > Models node.


  6. Save the simulation.