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Old   February 26, 2008, 04:15
Default Periodic flow
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selim
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Hi, I have an unsteady flow. At the inlet , velcoity U=0.2+0.3*sin(100*t) At outlet : opening type

At some times my inlet would be outlet. How should I choose Boundary condition in this case?

Thanks, ---Selim
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Old   February 26, 2008, 06:00
Default Re: Periodic flow
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Glenn Horrocks
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Hi,

If you mean that sometimes the flow goes into the domain and sometimes it goes out - that is fine, an inlet with a prescribed velocity should work here.

Glenn Horrocks
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Old   February 26, 2008, 08:48
Default Re: Periodic flow
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kirby
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you can execute it by using inlet boundary, because the 'inlet boundary' does not only means that the fluid flow into the calculating region.
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