Boundary slip surface design for high speed water lubricated journal bearings |
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| Affiliation: | 1. Xi?an Jiaotong University, Xi?an, People?s Republic of China;2. City University of Hong Kong, Hong Kong SAR, People?s Republic of China;1. School of Mechanical Engineering, Xi’an Jiaotong University, No. 28 West Xianning Rd., Xi’an, Shaanxi 710049, People''s Republic of China;2. MBE Dept., City University of Hong Kong, Hong Kong SAR, People''s Republic of China;3. SEEM Dept., City University of Hong Kong, Hong Kong SAR, People''s Republic of China;1. Welding and NDT Research Center (CSC), BP 64 Cheraga, Algiers, Algeria;2. Instiute Pprime, CNRS, University of Poitiers, ENSMA, Poitiers, France;1. Institute of Vibration, Shock and Noise, State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, PR China;2. Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai 200240, PR China;1. Department of Mechanical Engineering, Shiv Nadar University, Greater Noida, Uttar Pradesh 201314, India;2. Department of Mechanical & Industrial Engineering, Indian Institute of Technology, Roorkee, Uttarakhand 247667, India |
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| Abstract: | This paper presents the development of a numerical model for high speed and water lubricated journal bearings with different boundary slip arrangements. The effect of boundary slip and its possible mechanism are analyzed and discussed. The results suggest that a suitable combination of slip/no-slip surfaces on the sleeve of a journal bearing enables improvement of the tribological performance through (i) suppressing the occurrence of cavitation, (ii) enhancing the load bearing capacity, and (iii) reducing the interfacial friction between bearing sleeve and shaft. Such improvement becomes more significant for the bearings with smaller eccentricity ratio, smaller width and larger diameter. |
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| Keywords: | Journal bearing Boundary slip Tribological performance |
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