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August 16, 2007, 02:24
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Surface roughness in laminar flow
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#1 |
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Guest
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Hi,
I am not solving a laminar flow problem. In that do surface roughness value matters? Since I am under predicting the pressure loss value in a system? Where to input the surface roughness, I am not finding any place in wall BC. Thanks |
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August 16, 2007, 03:45
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Re: Surface roughness in laminar flow
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#2 |
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Guest
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In the Wall boundary conditions Panel.
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August 16, 2007, 05:05
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Re: Surface roughness in laminar flow
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#3 |
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Guest
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Surface roughness have NO influence on pressure drop at all in laminar flow. It is only Reynolds dependent: dP = rho * 64/Re * L/D * ½*V^2 -Dr. Flow Squad http://tinyurl.com/2gkjh8
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August 19, 2007, 15:35
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Re: Surface roughness in laminar flow
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#4 |
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Guest
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Hi
You can specify roughness height and roughness constant in the walls BC panel |
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August 19, 2007, 16:52
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Re: Surface roughness in laminar flow
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#5 |
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Guest
Posts: n/a
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Hi AAA, You can see the message of Dr. Flow Squad. The flow is laminar. Chouaib
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