Boundary Condition – Initialization in Fluent

    • claudiabogdan

      Can anyone explain to me, please, details about pressure as a boundary condition?
      For example, if I impose at the inlet - pressure-inlet 5 Bar, at the outlet I use pressure-outlet, what value should I put at Gauge Pressure? Do I also need to change the operating pressure in operating conditions? What value?

    • Rob
      Ansys Employee

      It depends.  The operating pressure (operating conditions) determines the "atmospheric" pressure, everything is then gauge against that.  The values you use are then determined by what you need in the model.  If you use a constant density I'd recommend using a velocity inlet and zero gauge on the outlet, but that's model dependent. 

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