Q4) A Plate 0.025 mm distant from fixed plate, moves at 60 cm/sec and requires a force of 2N per unit area i.e., 2 N/m2 to maintain this speed. Determine the fluid viscosity between the plates. F dy = 025 mm u = 60 cm/s FIXED PLATE

B1. Determine the kinematic viscosity of the fluid between the plates as shown in Figure B1 given the following information: F = 5N h = 0.5mm v = 7m/s L=21 cm w = 10cm SG= 0.80 Moving plate Stationary plate Fluid Figure B1 V

1 Consider a rapidly rotating (ie, in near geostrophic balance) Boussineq fluid on the f plane. A) Show that the pressure divided by the density scales as Φ ≈ fUL B) Show that the horizontal divergence of the geostrophic wind vanishes. Thus, argue that the scaling W ≈ UH = L is an overestimate for the magnitude of the vertical velocity

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1-15. Analyze the flow between two plates of Fig. 1-15 by assuming the fluid is a de Waele power-law fluid as in Eq. (1-31a). Compute (a) the velocity profile u(y) with the power n as a parameter and (b) the velocity at the midpoint h/2 for n = 0.5, 1.0, and 2.0. Answer: (b) u = V/2 for all cases 1-16. Reneat that

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