Selecting the Physics Models for the External Casing

Physics models define the primary variables of the simulation and what mathematical formulation is used to generate the solution.

The external casing is modeled as an air continuum.

To select the physics models for the external casing:

  1. Create a physics continuum and rename the Continua > Physics 1 node to External Casing.
  2. For the physics continuum, Continua > External Casing, select the following models in order:
    Group Box Model
    Space Three Dimensional
    Time Implicit Unsteady
    Material Gas
    Flow Segregated Flow

    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)

    Wall Distance (Selected automatically)

    Two-Layer All y+ Wall Treatment (Selected automatically)
    Optional Models Segregated Fluid Temperature
  3. Click Close.
  4. To review the models, open the External Casing > Models node.


  5. Select the Regions > Battery Module: External Casing node and set Physics Continuum to External Casing.
  6. Select the Regions > Battery Module: External Casing > Boundaries node and set the following properties:
    Node Property Setting
    Case.Inlet Type Velocity Inlet
    Case.Outlet Type Pressure Outlet
  7. Save the simulation.