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July 26, 2003, 04:39 |
Perforated plate
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#1 |
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Hi everybody, I define a perforated plate as porous-jump. 20% of the area of the plate is perforated. What value should i put for the permeability (in the boundary conditions)? CAn i find this value if i know that there are 20% perforations in the plate? Thank you.
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July 26, 2003, 12:32 |
Re: Perforated plate
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#2 |
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You may refer to Perry - Chemical engineering Hand Book or You can do series of simulations to find the resistance of the perforated plate!
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July 28, 2003, 09:03 |
Re: Perforated plate
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#3 |
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The permeability factor should be used only whenever the viscous resistance is important (i.e. laminar flow), so forget about using if for a perforated plate. The Fluent help file (6.19.6) shows you how to set the inertial factor for perforated plate, with an example for 25% opena area. Based on this method your value would be 12.5.
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July 28, 2003, 10:34 |
Re: Perforated plate
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#4 |
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thank you Erwin, this indormation was very important for me. Thnx again.
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July 29, 2003, 06:55 |
Re: Perforated plate
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#5 |
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You're welcome. Don't forget that the value I gave you applies for a perforated plate of 1 mm thickness.
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August 2, 2003, 08:01 |
Re: Perforated plate
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#6 |
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Porous jump instead of perforated plate is ok, if the flow comes normal to the plate. If it is under an angle, we found the results look not realistic.
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August 2, 2003, 10:06 |
Re: Perforated plate
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#7 |
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Thank you Frank for sharing your experience with me. I tried to use the perforated plate (as porous jump) and i noticed a small deflection of the direction of the flow. According to my supervisor the result was satisfactory but not very realistic. Thank you very much.
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March 1, 2016, 21:57 |
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#8 | |
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yehanyu
Join Date: Mar 2012
Location: Beijing, China
Posts: 48
Rep Power: 14 |
Quote:
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October 27, 2018, 17:33 |
Urgent "perforated plate file needed"
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#9 |
New Member
Ahmed
Join Date: Jul 2018
Posts: 3
Rep Power: 8 |
Hi all,
Has any one designed a perforated plate or cylinder geometry for cfd simulation ? if yes ..can i please have the same ? or just tell me the procedure to create the geometry ? I would really appreciate the help. Regards. |
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