Required information Oil flow in a journal bearing can be treated as parallel flow between two large isothermal plates with one plate moving at a constant velocity of 4 m/s and the other stationary. Consider such a flow with a uniform spacing of 0.7 mm between the plates. The temperatures of the upper and lower plates are 40°C and 15'C, respectively.
Required information Oil flow in a journal bearing can be treated as parallel flow between two large isothermal plates with one plate moving at a constant velocity of 4 m/s and the other stationary. Consider such a flow with a uniform spacing of 0.7 mm between the plates. The temperatures of the upper and lower plates are 40°C and 15'C, respectively.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Oil flow in a journal bearing can be treated as parallel flow between two large isothermal plates with one plate moving at a
constant velocity of 4 m/s and the other stationary. Consider such a flow with a uniform spacing of 0.7 mm between the
plates. The temperatures of the upper and lower plates are 40°C and 15°C, respectively.
NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part.
Vm
The properties of oil at the average temperature of (40+15)/2 - 27.5°C are k- 0.145 W/m K and u-0.605 kg/m-s = 0.605
Ns/m?
By simplifying and solving the continuity, momentum, and energy equations, determine the maximum temperature and where it occurs.
The maximum temperature is
40.53 "C.
The location of the maximum temperature is
6.04 mm above the bottom plate.
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