期刊
SURFACE TOPOGRAPHY-METROLOGY AND PROPERTIES
卷 9, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2051-672X/abe215
关键词
water-lubrication bearing; wall slip; partial microgroove; lubrication performance; numerical model
资金
- National Natural Science Foundation of China [51975064]
- General Projects of Basic Science and Frontier Technology Research of Chongqing [cstc2018jcyjAX0442, 2020CDJGFCD001]
- Fundamental Research Funds for the Central Universities
Among three different microgroove distributions of Partial Microgroove Water-lubricated Bearings (PMWB), herringbone-groove bearings have the highest load capacity, followed by spiral-groove bearings and straight-groove bearings. Wall slip is shown to enhance the load capacity for all three types of microgroove distributions. The parametric study reveals that the eccentricity ratio significantly affects the lubrication performance of PMWB, while the groove depth and angle have minor effects.
In the present works, the Reynolds equation considering the partial wall slip is used to study the hydrodynamic lubrication performance of Partial Microgroove Water-lubricated Bearings (PMWB). Based on the developed model, the hydrodynamic performances of partial microgroove water-lubricated bearings with three microgroove distributions are systematically compared. The results show that herringbone-groove bearing yields the maximum load capacity, followed by spiral-groove bearings and straight-groove bearings. Furthermore, numerical results also show that wall slip can enhance the load capacity for all three partial microgroove distributions. In addition, the effects of the groove depth and the groove angle, eccentricity ratio and slip arrangement on the lubrication performance of the microgroove bearings are studied. The simulation results indicate that the eccentricity ratio significantly affects the lubrication performance of partial microgroove water-lubricated bearings considering wall slip, while the groove depth and the angle only slightly affect the lubrication performance. Moreover, the slip arrangement is less sensitive to the depth and angle of groove than eccentricity ratio. The parametric study demonstrates that the load capacity of PMWB will decline at a relatively large eccentricity ratio.
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