Question

Consider the turbulent flow of air, density 1.2 kg/m3 and kinematic viscosity 1.5x10-5m2/s, through a channel bounded by two infinitely wide parallel plates 0.2 m apart. At a certain downstream location where fully-developed conditions apply, the wall shear stress is measured to be 0.027 N/m2.

a. Determine the streamwise mean velocities at locations 0.25 mm and 1 cm from the wall.
b. At which of these two locations do you expect to find the larger Reynolds shear stress.

Answer 1

5 za-01027 NInt developed:

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