Fluids

Fluids

Specifying the flow direction for a Pressure-Farfield

    • KruX
      Subscriber

      Hello,


      do I need to specify the flow direction at a Pressure-Farfield. In my simulation I use a Pressure-Farfield both as an inlet and as an outlet to the domain. So do I need to specify the flow direction, like an axial component of 1 for the inlet and an axial component of -1 for the outlet? This would correspond to the sign assignment for incoming and outgoing mass flows.


       


      Tank you und best reagrds!

    • DrAmine
      Ansys Employee

      Yes: that is required.

    • KruX
      Subscriber

      Thank you for your response. I tried it with the specification of the flow direction, but now my simulation isn't converging anymore and the outlet massflow is positive. I also saw tutorials on YouTube where they simulated an airfoil and used Pressure-Farfield as the boundary conditions. However, they didn't specify the flow direction but their simulation converged.


      Best regards,


      Roman

    • Rob
      Ansys Employee

      Have you looked at the various NACA tutorials to see what's different to your set up?  By default the flow is assumed in the +x direction, so it will be set just not highlighted. 

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