Selecting the Physics Models

Physics models define the primary variables of the simulation, including pressure, temperature, velocity, and what mathematical formulation is used to generate the solution.

In this simulation, the flow is turbulent and incompressible. The Segregated Flow model is used together with the default K-Epsilon Turbulence model. The Lagrangian Multiphase model is used to model the dispersed phase.

Only one region for the continuous phase, air, is required for the analysis. By default, the continuum Physics 1 is automatically created when the mesh is imported. Edit the continuum so that appropriate physical models are selected for the air fluid region.

To select the physics models:

  1. For the physics continuum, Continua > Physics 1, select the following models in order:

    Group Box

    Model

    Enabled Models

    Three Dimensional (Pre-selected)

    Time

    Steady

    Material

    Gas

    Flow

    Segregated Flow

    Gradient Metrics

    Gradients (Selected automatically)

    Equation of State

    Constant Density

    Viscous Regime

    Turbulent

    Reynolds-Averaged Navier-Stokes (Selected automatically)

    Reynolds Averaged Turbulence

    K-Epsilon Turbulence

    Realizable K-Epsilon Two-Layer (Selected automatically)

    Two-Layer All y+ Wall Treatment (Selected automatically)

    Wall Distance (Selected automatically)

    Optional Models

    Lagrangian Multiphase

  2. Click Close.
  3. To review the models, open the Physics 1 > Models node.


  4. Save the simulation.