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Old   November 27, 2003, 11:05
Default Pressure Outlet
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Hello everybody,

I am trying to model a simple jet flow. Laminar, Incompressible,unsteady flow. At the exit boundary, I specify pressure outlet condition. Is it good to use this condition.Does the pressure outlet condition work the same as outflow condition and extrapolates properties from the interior. Thanks in advance
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Old   November 27, 2003, 19:59
Default Re: Pressure Outlet
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Pressure outlet imposes a constant value for pressure or a pressure profile (using UDF) at the outlet.

All other properties are extrapolated from the interior.


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Old   November 28, 2003, 07:54
Default Re: Pressure Outlet
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Hi, I did simulate a jet flow recently: Falling down Water jet into air. Are you simulating it in a confined domain? If it is the case, your jet will attract air by moving and create recirculation zone. Depending on how far from the jet is your oulet, I would advice you to use a pressure outlet with a correct backfow setting.

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