Specifying Boundary Conditions

Here, you define the boundary types on the extruded mesh regions: Upstream Extension and Downstream Extension, and apply the advance velocity to the inlet boundary. The boundaries on these new regions are set as walls by default.

  1. Expand Regions > Upstream Extension > Boundaries node and rename Default boundary to Far Field
  2. Set the following properties:
    Node Property Setting
    Far Field Type Symmetry Plane
    Inlet Type Velocity Inlet
    Physics Values
    Velocity Magnitude Method Field Function
    Scalar Function VA
  3. Edit the Regions > Downstream Extension > Boundaries node and set the following properties:
    Node Property Setting
    Outlet Type Pressure Outlet
    Static Region.Far Field Type Symmetry Plane
Use the advance velocity as the initial velocity for the fluid domain:
  1. Expand the Continua > Physics 1 > Initial Conditions node.
  2. Select the Velocity node and set Value to [-1 * $VA, 0.0, 0.0].