velocity distribution in a channel -- CFD Online Discussion Forums

December 25, 2012, 03:25	velocity distribution in a channel	#1
hydraulics New Member hydraulics Join Date: Nov 2012 Posts: 6 Rep Power: 13	Hi, I was modeling a flow field in a channel with groynes with a cfd program, But velocity distribution is not similar with the experimental results. My model has a very negative velocity between the groynes but the experiments show less negative velocity. What can I do to solve this problem? I think I must change the roughness around the groynes but I don't know increase it or decrease it because I don't know the mean of negative velocity!!! Please help me. Thanks

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