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A study of thermal effects in an offset‐halves journal bearing profile using different grade oils
Author(s) -
Chauhan Amit,
Sehgal Rakesh,
Sharma Rajesh Kumar
Publication year - 2011
Publication title -
lubrication science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.632
H-Index - 36
eISSN - 1557-6833
pISSN - 0954-0075
DOI - 10.1002/ls.152
Subject(s) - reynolds equation , thermal conduction , finite difference method , mechanics , thermal , computation , offset (computer science) , thermodynamics , materials science , mathematics , reynolds number , physics , computer science , algorithm , turbulence , programming language
ABSTRACT The Reynolds equation has been solved simultaneously along with the energy equation and heat conduction equation by finite difference method to find pressure and temperature distribution for circular and offset‐halves journal bearings. Numerical solution of energy equation was achieved using parabolic temperature profile approximation technique for faster computation. A comparative study for the rise in oil temperatures, thermal pressures and load‐carrying capacity for the three different commercially available oils namely Hydrol 68, Mak 2T and Mak Multigrade (Bharat Petroleum Corporation Limited [BPCL], Mumbai, India) has been carried out. With an increase in speed, the oil temperature, the thermal pressure and the load‐carrying capacity rose for all the grade oils under study. The rise in computed oil temperature, thermal pressures as well as load‐carrying capacity has been found maximum for Mak Multigrade oil and minimum for Mak 2T oil. The nature of temperature profiles and load‐carrying capacity has been found to be in good agreement with those available in the literature. Copyright © 2011 John Wiley & Sons, Ltd.