Turbulent Reynolds -- CFD Online Discussion Forums

October 15, 2003, 18:17	Turbulent Reynolds	#1
A.M.Memarzadegan Guest Posts: n/a	Dear All, I am solving channel flow. I just wonder whether the undimensional values those I have calculated are correct or not? I am to draw y+ versus u+ k+ e+ ** which of Uf is correct? uf=cmu.25sqrt(k(first node after wall) uf=sqrt(viscosity/densityu(first node after wall)/y(first node after wall)) ***** yplus=densityufy(each node)/(viscosity) uplus=u(each node)/uf kplus=k(each node)/uf2 epsilonplus=epsilon(each node)/(uf4/viscosity/density) furthermore, What is The turbulent reynolds(Ret) found in DNS data.eg Ret=180,380,590 of a channel flow? Is it Ret=uf*H(channel Half with)/nu? at which section? should i change bulk Reynold to reach this Ret? Thanks all

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