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Considering the flow through a dense net / grid |
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July 31, 2012, 16:05 |
Considering the flow through a dense net / grid
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#1 |
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I have a grid like structure in the flow path and I'd like to consider it's effect with out actually meshing it.
The attached image shows the sructure / surface im talking about. I'd like just keep it as a plane surface with out actually meshing those small holes but considering their effect by some means. Could some one please tell me how to do this.
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Best regards, Santhosh. |
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August 1, 2012, 04:07 |
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#2 |
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Flavio
Join Date: Sep 2011
Location: Brescia, Italy
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Hi saisanthoshm88,
in the past I worked on a burner with a very dense metallic net: I modelized it with porous zone, so I suggest using it (even porous jump can be used). See Fluent Manual for info about it (if you'll have some specific question maybe I''be able to answer ) Regards |
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August 1, 2012, 06:58 |
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#3 |
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Yaa I think the porus jump boundary condition could be used here but I didn't know how to calculate the face permeabilty and pressure jump coefficient to my case.
I don't know the velocity of flow through this perforated plate it's just lying in the flow path. Could some one please suggest on this
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Best regards, Santhosh. Last edited by saisanthoshm88; August 1, 2012 at 10:07. |
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August 1, 2012, 11:27 |
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#4 |
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Flavio
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Perhaps you can find some empirical correlations about velocity and pressure through a grid like yours...
Or you could model a small fraction of the system (maybe taking advantage of symmetries) and simulate it with a good mesh even for the holes
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Bionico |
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