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The pressure in Fluent

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Old   October 25, 2004, 23:04
Default The pressure in Fluent
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danny
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Hi,

What does the pressure mean in Fluent? Is it the same to P in the governing equation in the help files?

I simulated a case of water flow though a vertical tube, and the inlet and outlet boudaries are set to pressure-, but when the bottom inlet pressure is a lilttle higher(for example, 1Pa) than the top outlet, the flow direction will be upward. Because in my case I define the gravity, I am afraid of there are some problem in Fluent?

Could anybody give any ideas about this?

Best Regards,

B. ZHAO
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Old   October 26, 2004, 07:32
Default Re: The pressure in Fluent
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Optixxx
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************************************************

Canīt be! look at the flow vectors in /display panel. If wrong, youīve set gravity in wrong direction. Normally gravity vector is same direction as natural (top->buttom), f.e ansys itīs like acceleration field (inversed direction)

hope i could help

Optixxx
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Old   October 26, 2004, 09:48
Default Re: The pressure in Fluent
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danny
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HI, Optixxx:

Thanks a lot for your help! Now I know what's wrong with my case, I did not specify the operating pressure. It is the key point. I am very appreciate to your response.

B. Zhao
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