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Specified the mass flow or velocity with internal condition

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Old   September 1, 2023, 01:03
Default Specified the mass flow or velocity with internal condition
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Jie-Ying Zhan
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hey guys,I realy need some advice,please help me.

As the title, I'm simulating a data center case, and I want to specify the flow rate behind each rack(with face). Obviously, I can't use inlet or outlet boundary conditions, so I want to know if there is a way to directly specify the flow velocity or flow rate on that face(maybe with internal condition or something else?).
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Old   September 1, 2023, 11:18
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I think you are looking for an internal fan condition. If you have two faces in contant you can specify a pressure jump across the face. This simulates a fan taking air in from one side and accelerating it back into the domain.

check out the fluent manual for more details on using the internal fan boundary condition
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