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  3. 3 sae 10 oil with a free stream velocity of...

Question: 3 sae 10 oil with a free stream velocity of...

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3. SAE 10 oil with a free stream velocity of 5 m/s flows over a thin plate 2 m wide and 4 m long. Determine the boundary layer thickness, shear stress, displacement thickness and momentum thickness at x = 1.75 m and calculate the total, double-sided resistance of the plate. Take density940 kg/m3 and kinematic viscosity3.085 x 10-5 m2/s. 4. Air flows parallel to a sign board with dimension of 10 m long and 5 m width. The velocity of the air is 30 m/s. Calculate friction force, Fo over both surfaces of the board. Given kinematic viscosity, v is 1.42 x 10-5 m2/s and density, ρ is l 247 kg/m3.

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