3. Consider two large isothermal plates separated by 2-mm thick oil film. The upper plate moves as a constant velocity of 12 m/s, while the lower plate is stationary. Both plates are maintained at 24 °C. a. Obtain relations for the velocity and temperature distribution in the oil b. Determine the maximum temperature in the oil and the heat flux from the oil to each plate. Properties: k= 0.145 W/mK u= 0.8374 kg/ms =0,8374 Ns/m2

3. Consider two large isothermal plates separated by 2-mm thick oil film. The upper plate moves as a constant velocity of 12 m/s, while the lower plate is stationary. Both plates are maintained at 24 °C. a. Obtain relations for the velocity and temperature distribution in the oil b. Determine the maximum temperature in the oil and the heat flux from the oil to each plate. Properties: k= 0.145 W/mK u= 0.8374 kg/ms =0,8374 Ns/m2

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.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.16P

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5.7 The average Reynolds number for air passing in turbulent flow over a 2-m-long, flat plate is . Under these conditions, the average Nusselt number was found to be equal to 4150. Determine the average heat transfer coefficient for an oil having thermal properties similar to those in Appendix 2, Table 18, at at the same Reynolds number and flowing over the same plate.
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