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ive just gotten around to giving this a go (had a busy weekend of work :O ) and I'm just a tad confused as to what U in the above formula is actually denoting, obviously density and viscosity are there but I'm not sure about the U if you get a chance can you fill me in? i know it's a silly...

that sounds bang on! so for calculating this out i take my unit reynolds number" and multiply it by my chord length is it? it sounds like you just made my calculations a lot easier! :O :) thanks a million!

Thanks! I'll give that a go!

Basically I'm going to be running tests on lift on various permutations of the same aerofoil section. In order to calculate lift I need the Reynolds number for the velocity of the air inside the wind tunnel. If I can calculate this based on the wind tunnel itself then everything else will slot...

Oh AND I seem to have forgotten to point out that this will be used for testing a small model of an airfoil (100x200 mm approx) in a wind tunnel that is about 500mm square in section give or take! Just for the record i have a plan of sorts on how i will be mounting the part but suggestions are...

Hi All! as you can see I'm new here! i signed up in order to ask for a wee bit of help with my thesis! (now don't get me wrong I am not exactly asking anyone to write it for me!) I've found myself at a small bit of a loose end here, as a mechanical engineering student i am perfectly capable of...