How to define Back pressure or back flow in CFX

    • Girishmujawar

      Hello everyone, Please help me in understanding the procedure of defining the back flow at the outlet in CFX.

      Is it possible to give multiple boundary Condition at one face ?

    • Surya Deb
      Ansys Employee
      Are you using pressure outlet boundary condition? Then inflow will be prevented by cfx solver as it constructs artificial walls in the cells having backflow to prevent the flow from coming into the domain.
      If you are using opening BC, then static pressure is used for flow going out of the domain while total pressure is used for flow coming into the domain. Static pressure is then calculated from this total pressure.
      Hope this helps.
      Regards SD
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