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How to add skin roughness when using LES turbulent mode

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Old   October 8, 2014, 17:26
Default How to add skin roughness when using LES turbulent mode
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Hi, I want to take skin roughness into consideration when using LES modal. When I use RANS modal I can set it in 0/nut file but in LES it seems the surface is smooth. Could someone tell me whether it is possible and how can I do it ?
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Old   October 9, 2014, 06:56
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Can someone help me?
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