Question: Engine oil at 80C flows over a 10-m-long flat plate whose temperature is 30C with a velocity of 2.5 m/s. The properties of engine

Engine oil at 80C flows over a 10-m-long flat plate whose temperature

Engine oil at 80C flows over a 10-m-long flat plate whose temperature is 30C with a velocity of 2.5 m/s. The properties of engine oil at the film temperature of (Ts + Too)/2 = (80+30)/2=55C are: p=867 kg/m v=7.045 x 10-5 m/s k= 0.1414 W/m.C Pr=1551 Over the entire plate per unit width, Determine: Y Y the Reynolds number at the end of the plate is the average Nusselt number the heat transfer coefficient The rate of heat transfer is Based on the critical Reynolds number, the flow type is W/m.C W A. 64.75 B. 1.24 104 C. 34.75 D-3.549 105 E. 4579 F. 3.24 104 G.7456 H. Turbulent 1 Laminar

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