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Old   January 6, 2011, 21:35
Default Pressure Boundary Condition
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hamid
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Hi

What is the definition of pressure inlet and pressure outlet in Fluent,
I am going to simulate a cylinder with the same amount of pressure inlet and pressure outlet, as far as I understand because the pressure at both sides of the cylinder are identical there shouldn’t be any flow and the velocity should be zero, but there is a flow from inlet to outlet with non-zero speed,

It happens even when the pressure outlet is higher than pressure inlet,

Could anybody let me know why?

Thanks very much in advance
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Old   January 7, 2011, 04:06
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Bernhard
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Did you have a look at the Fluent Users Guide? Boundary conditions and the solved equations are described in some detail there.
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Old   January 7, 2011, 06:30
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hamid
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Thanks for reply,
Yes, but still abit confused, in my feeling when the pressure inlet and outlet are the same then it means that there is not delta P and there wont be no motion, I Know this is wrong (in fluent)but I don’t know why?
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Old   January 7, 2011, 09:19
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If anybody is aware of the answer please kindly share,
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