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mokemex February 18, 2009 07:14

modeling perforated plate
 
Hi all,

I am trying to model a perforated plate at the end of a pipe as a porous media in 2D. Can some one help me on how to do it? I know the porosity and K(the flow resistance coefficient) of the perforated plate. I would be glad if some one tells me the procedures to determine the coefficients for fluent.

Thanx in advance, Mokemex


Pablo February 18, 2009 09:09

Re: modeling perforated plate
 
That's explicitly written on Fluent user's guide. See porous media chapter.

mokemex February 18, 2009 10:11

Re: modeling perforated plate
 
Dear Pablo,

Thank you for your response. From the fluent user's guide worked example (equations 6.19-10 to 6.19-13), I could calulate C2, it becomes 1122, but this method doesn't say about how to get 1/alpha?

Then, since I have an experimental data (pressure drop Vs velocity) of the same plate, I used eqns. 6.19-22 and calculated both C2 and 1/alpha,. However, the new C2 is a completely different number, C2= 0.7720.

That's where I am confused?! I am sure I am missing something, Can you help me now?

Thanks again, Mokemex


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