Question about the Renolds number to estimate the wall cell width -- CFD Online Discussion Forums

October 29, 2012, 07:34	Question about the Reynolds number used to estimate the wall cell width	#1
Anna Tian Senior Member Meimei Wang Join Date: Jul 2012 Posts: 494 Rep Power: 15	Hi Here's the formula given in this forum to estimate the wall cell width. http://www.cfd-online.com/Wiki/Y_plu...nce_estimation May I ask how is L_boundarylayer defined here? Is Re calculated here different from the Re we use to estimate the flow regime? (The Re to estimate the flow regime is calculated by characteristic length which could be very different from L_boundarylayer.) By the way, for laminar flow, shall we still use this formula to estimate the wall cell width? If not, what formula shall we use? Thank you very much. __________________ Best regards, Meimei Last edited by Anna Tian; October 29, 2012 at 09:54.

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