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How to define the wall roughness in FLOW-3D ?

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Old   December 19, 2008, 04:31
Default How to define the wall roughness in FLOW-3D ?
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Marco
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I'm researching about open channel flow, and the roughness is an important role in open channel. But I don't find where can I set the roughness in FLOW-3D. May Someone help me to solve the problem ?

Thanks a lot.
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Old   December 19, 2008, 09:43
Default Re: How to define the wall roughness in FLOW-3D ?
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Armen A. Ghirghidov
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You may use rough(1)=0.001 (roughness in meters) for example in $obs part of the prepin.inp or use Geometry->component->surface properties->surface roughness and remember that roughness in meters (if you use si system of course). FLOW-3D help has full information about this.

Regards, Armen
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Old   December 19, 2008, 16:15
Default Re: How to define the wall roughness in FLOW-3D ?
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AMP
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It is very easy, F3D get these datas where you define a new obstacle with special material properties in geometry menu.
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Old   December 20, 2008, 02:26
Default Re: How to define the wall roughness in FLOW-3D ?
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Marco
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Very grateful everyone. I'll try again, thanks.
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