Fluids

Fluids

Supersonic outlet boundary condition

    • Abubakar
      Subscriber

      Hi sir,

      I have a question related to outlet boundary condition for supersonic flow.

      What I have a read is in supersonic flow static pressure can't propogate back Upstream faster then wave speed so, I didn't understand this statement can anyone explain me this thing in brief? TIA

    • Surya Deb
      Ansys Employee
      Hello,
      Yes , for supersonic outlet conditions, the static pressure at the outlet is extrapolated from interior cells. So the specified pressure will no longer be used. The reason for this is as you have mentioned already.
      Regards SD
    • DrAmine
      Ansys Employee
      At supersonic inlet you specify everything at supersonic outlet nothing you specify will be used.
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