Question: Consider two large (infinite) parallel plates, 5 mm apart. One plate is stationary, while the other plate is moving at a speed of 200 m/s.

Consider two large (infinite) parallel plates, 5 mm apart. One plate is stationary, while the other plate is moving at a speed of 200 m/s. Both plates are maintained at 27˚C. Consider a case, in which the plates are separated by water. Determine the force per unit surface area (N/m2) required to maintain the above condition? Also, find the corresponding power requirement (W/m2)? Assume the properties of water as (μ = 855 x 10-6 N.s/m2, k = 0.613 W/m.K ).

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