Temperature rise in modern hydrodynamic bearings reaches so high values and none of the engineering surface is perfectly smooth, therefore, the results obtained from the solution of Reynolds equation alone doesn’t give a true picture of the bearing behavior. In this work, the Reynolds equation is solved iteratively with the energy and heat transfer equations using finite difference technique and some roughness patterns have been assumed for the inner surface of the bearing and the outer surface of the journal to assess their effects on the bearing performance characteristics. A comparison between the behavior of smooth and rough bearings has been conducted. It is found that the presence of roughness asperities has a considerable influence on the bearing performance characteristics. The most important conclusions are that, roughness effects are more pronounced at higher values of eccentricity ratio and the effect of transverse roughness is to increase the load capacity, whereas longitudinal roughness causes a decrease in load as compared to a smooth bearing.
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ASME 8th Biennial Conference on Engineering Systems Design and Analysis
July 4–7, 2006
Torino, Italy
ISBN:
0-7918-4250-9
PROCEEDINGS PAPER
Thermo-Hydrodynamic Analysis of Rough Journal Bearing
L. A. Abdel-Latif,
L. A. Abdel-Latif
Helwan University, Cairo, Egypt
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A. M. A. El-Butch
A. M. A. El-Butch
Helwan University, Cairo, Egypt
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A. Bahzad
Helwan University, Cairo, Egypt
L. A. Abdel-Latif
Helwan University, Cairo, Egypt
A. M. A. El-Butch
Helwan University, Cairo, Egypt
Paper No:
ESDA2006-95076, pp. 847-856; 10 pages
Published Online:
September 5, 2008
Citation
Bahzad, A, Abdel-Latif, LA, & El-Butch, AMA. "Thermo-Hydrodynamic Analysis of Rough Journal Bearing." Proceedings of the ASME 8th Biennial Conference on Engineering Systems Design and Analysis. Volume 3: Dynamic Systems and Controls, Symposium on Design and Analysis of Advanced Structures, and Tribology. Torino, Italy. July 4–7, 2006. pp. 847-856. ASME. https://doi.org/10.1115/ESDA2006-95076
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