Example 1Engine 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 filmtemperature 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 theentire plate.oilT- = 60°CV-=2 m/sT=20°C-L= 5 mWe assume the critical Reynolds number is 5x105. The properties of the oil at the film temperature are:

Given :- Too=60oc Ts=20oC Length= l=5m Width =W= unit length =1m Velocity =V=2m/s Density = e= 876…

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:

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:

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.50P

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