| Citation: | WANG Yize, LIU Hongbin, MENG Yonggang. Study on thermal field characteristics of high speed cylindrical roller bearing under ring lubrication[J]. Journal of Aerospace Power, 2024, 39（5）：20210583 doi: 10.13224/j.cnki.jasp.20210583
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To solve the problem of high temperature failure of cylindrical roller bearing under high-speed operation, volume of fluid (VOF) method and multiple reference frame (MRF) model were used to model the oil supply groove and bearing cavity of cylindrical roller bearing inner ring, respectively, the oil supply situation of the oil supply groove was calculated and the result was applied to the bearing cavity model. The temperature rise of the oil inlet hole under the ring relative to the roller was calculated, and the final temperature rise in the bearing cavity was obtained by weighted average. The effects of bearing speed and oil supply rate on the temperature rise of friction in bearing chamber and the temperature rise of lubricating oil viscous shear were analyzed. The results showed that when the oil supply rate of the bearing was constant, the higher rotational speed indicated all the increase in the friction of the internal components of the bearing, the viscous shear force of the lubricating oil in the cavity and the friction and viscous temperature rise. When the bearing speed was constant, the increase of lubricating oil viscosity shear temperature rise and the improvement of cooling effect caused by the increase of oil content were higher than the latter when the oil content was low, and then these two were gradually flat. The viscosity temperature rise first decreased and then stayed at a certain level, while the friction temperature rise decreased. This study can provide a reference for lubrication design of high-speed cylindrical roller bearing ring.
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