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Unformatted text preview: o C and at one standard atmosphere pressure. At what air speed do they need to run the wind tunnel in order to achieve similarity? 3. A horizontal water jet of constant velocity V impinges normally on a vertical flat plate and splashes off the sides in the vertical plane. The plate is moving toward the oncoming water jet with velocity V. If a force F is required to maintain the plate stationary, how much force is required to move the plate toward the water jet? 4. A fish is swimming in open sea between two streamlines as shown below. Distance between the streamlines is 1m and the inlet and outlet areas are the same (A in =A out =10m 2 ). At the inlet velocity is uniform and 5 m/s. At the outlet the velocity profile is v out = (y-d/2) 2 +1 m/s. Take = 1000 kg/m 3 , = 10-3 kg/(ms) and g =10 m/s 2 . a. Determine . b. Determine the lift and drag forces acting on the fish. Fish A in A out =30 . x y 1m 1/2 V V Waterjet...
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- Fall '08