first node in turbulence model -- CFD Online Discussion Forums

August 20, 2001, 04:10	first node in turbulence model	#1
Franco Belosi Guest Posts: n/a	I'm a beginner with CFD (CFX4.3): in dealing with the k-epsilon turbulence model I've to set the first node at y+>11.Since y+ is a function of the unknown friction velocity how can I estimate the first grid position? Are there any empirical relationships which allow a crude estimate of the friction velocity? Thank you in advance for anybody helping me.

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