Question 1 The formula for flow is Q = Velocity X cross sectional area

a) What are the units and dimensions of flow?

b) The Reynolds number is formula which determines the turbulence of flow. What are is the formula? Prove in detail that this is a dimensionless formula by substitution of the units into the formula.

Afan that can provide air speeds up to 60 m/s is to be used in a low-speed wind tunnel with atmospheric air at 35 c. if one wishes to use the wind tunnel to study flat-plate boundary layer behavior up to reynolds numbes of re 10, what is the minimum plate length that should be used? at what distance from the leading edge would transition occur if the critical reynolds nurnber were rer,e = 5 × 105?