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Boundary conditions in Fluent

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Old   January 7, 2003, 15:21
Default Boundary conditions in Fluent
  #1
Ankan Kumar
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Hi

I am new to Fluent. Can anybody tell me how do I put a FULLY DEVELOPED inlet boundary condition for pipe flow in Fluent? The velocity inlet conditon gives me plug flow which is not what I want.

Thanks Ankan
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Old   January 7, 2003, 22:50
Default Re: Boundary conditions in Fluent
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Keil
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Hi,

All we can do such a thing is that we have to customize the boundary condition via User Defined Function(called UDF) . Or, how about extend the inlet to be fully developed flow?.

I mean , we make the inlet region(called entrance region, or inlet length , enctrance length) This length is given by Boussineq or Nikuradse in laminar flow . Latzko in turbulence. When we make this length ,Fully developed flow is got automatically. This way is the most easy way I guess.

Regards,
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Old   January 10, 2003, 21:08
Default Re: Boundary conditions in Fluent
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Alamgir
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For your help further just look UDF manul 1st-3rd chapters and you have a clear idea about your problem.

cheers

Alamgir
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