Cavitation phenomenon in lubricants significantly influences the performance of associated machinery. In this paper, the cavitation mechanism of an oil-film bearing is attributed to gaseous cavitation, and a new gaseous cavitation model based on air solubility in the lubricant is presented. The model is validated using the Reynolds equation algorithm for fixed-geometry oil-film journal bearing, and the predicted results at different eccentricity ratios show good agreement with published data. The analyses show that gaseous mechanism can explain the cavitation phenomena that occur in the bearing except for very heavy load cases. In particular, this new model is compatible with the Jakobsson–Floberg–Olsson condition. Therefore, the new model has an explicit physical meaning, can produce good results, can identify whether vaporous cavitation occurs, and more importantly, can provide a novel means of developing cavitation models for low-vapor-pressure lubricants.
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e-mail: xs-li@mail.tsinghua.edu.cn
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July 2012
Hydrodynamic Lubrication
Cavitation Mechanism of Oil-Film Bearing and Development of a New Gaseous Cavitation Model Based on Air Solubility
Xue-song Li,
Xue-song Li
Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering,
e-mail: xs-li@mail.tsinghua.edu.cn
Tsinghua University
, Beijing 100084, People’s Republic of China
Search for other works by this author on:
Yin Song,
Yin Song
Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering,
Tsinghua University
, Beijing 100084, People’s Republic of China
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Zeng-rong Hao,
Zeng-rong Hao
Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering,
Tsinghua University
, Beijing 100084, People’s Republic of China
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Chun-wei Gu
Chun-wei Gu
Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering,
Tsinghua University
, Beijing 100084, People’s Republic of China
Search for other works by this author on:
Xue-song Li
Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering,
Tsinghua University
, Beijing 100084, People’s Republic of China
e-mail: xs-li@mail.tsinghua.edu.cn
Yin Song
Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering,
Tsinghua University
, Beijing 100084, People’s Republic of China
Zeng-rong Hao
Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering,
Tsinghua University
, Beijing 100084, People’s Republic of China
Chun-wei Gu
Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering,
Tsinghua University
, Beijing 100084, People’s Republic of China
J. Tribol. Jul 2012, 134(3): 031701 (7 pages)
Published Online: June 12, 2012
Article history
Received:
June 16, 2011
Revised:
April 15, 2012
Online:
June 12, 2012
Published:
June 12, 2012
Citation
Li, X., Song, Y., Hao, Z., and Gu, C. (June 12, 2012). "Cavitation Mechanism of Oil-Film Bearing and Development of a New Gaseous Cavitation Model Based on Air Solubility." ASME. J. Tribol. July 2012; 134(3): 031701. https://doi.org/10.1115/1.4006702
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