Problem 6.016 a fan that can provide air speeds up to 50 m/s is to be used in a low-speed wind tunnel with atmospheric air at 25ºc. if one wishes to use the wind tunnel to study flatplate boundary layer behavior up to reynolds numbers of 108, what is the minimum plate length that should be used? at what distance from the leading edge would transition occur if the critical reynolds number were 5 × 105?