A 6cm diameter shaft rotates at 3000rpm in a 20cm long bearing with a uniform clearance of 0.2mm. At steady operating conditions, both the bearing and shaft in the vicinity of the oil gap are 50°C. The thermal conductivity and the viscosity of the lubricating oil are k=0.17 W/m-K and u= 0.05 N-s/m², respectively. By simplifying and solving the differential continuity, momentum and energy equation, determine the maximum temperature of oil. (Hint: Couette flow) 0.2mm shaft 3000rpm rpm `oil bearing 20 cm

A 6cm diameter shaft rotates at 3000rpm in a 20cm long bearing with a uniform clearance of 0.2mm. At steady operating conditions, both the bearing and shaft in the vicinity of the oil gap are 50°C. The thermal conductivity and the viscosity of the lubricating oil are k=0.17 W/m-K and u= 0.05 N-s/m², respectively. By simplifying and solving the differential continuity, momentum and energy equation, determine the maximum temperature of oil. (Hint: Couette flow) 0.2mm shaft 3000rpm rpm `oil bearing 20 cm

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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Question

100%

A 6cm diameter shaft rotates at 3000rpm in a 20cm long bearing with a uniform
clearance of 0.2mm. At steady operating conditions, both the bearing and shaft in the
vicinity of the oil gap are 50°C. The thermal conductivity and the viscosity of the
lubricating oil are k=0.17 W/m-K and u= 0.05 N-s/m², respectively. By simplifying and
solving the differential continuity, momentum and energy equation, determine the
maximum temperature of oil. (Hint: Couette flow)
0.2mm
shaft
3000rpm
rpm
6 сm
oil
bearing
20 cm

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