Engine oil at 60°C flows over a 5 m long flat plate whose temperature is 20°C with a velocity of 2 m/s with a surface film temperature of 40°C. The density, thermal conductivity, Prandlt No. and kinematic viscosity are 876 kg/m³, 0.144 W/m.K, 28270, and 242 x 105 m²/s, respectively. Determine the total drag force and the rate of heat transfer per unit width of the entire plate. oil T= 60°C V-=2 m/s -T3=20°C- L=5m We assume the critical Reynolds number is 5x105. The properties of the oil at the film temperature are:

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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Example 1
Engine oil at 60°C flows over a 5 m long flat plate whose temperature is 20°C with a velocity of 2 m/s with a surface film
temperature of 40°C. The density, thermal conductivity, Prandlt No. and kinematic viscosity are 876 kg/m², 0.144 W/m.K,
28270, and 242 x 10$ m²/s, respectively. Determine the total drag force and the rate of heat transfer per unit width of the
entire plate.
oil
T- = 60°C
V-=2 m/s
T=20°C-
L= 5 m
We assume the critical Reynolds number is 5x105. The properties of the oil at the film temperature are:
Transcribed Image Text:Example 1 Engine oil at 60°C flows over a 5 m long flat plate whose temperature is 20°C with a velocity of 2 m/s with a surface film temperature of 40°C. The density, thermal conductivity, Prandlt No. and kinematic viscosity are 876 kg/m², 0.144 W/m.K, 28270, and 242 x 10$ m²/s, respectively. Determine the total drag force and the rate of heat transfer per unit width of the entire plate. oil T- = 60°C V-=2 m/s T=20°C- L= 5 m We assume the critical Reynolds number is 5x105. The properties of the oil at the film temperature are:
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