| 微小型航空发动机滚动轴承复合润滑冷却技术 |
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| 引用本文： | 李果,韩树军,丁水汀,杜发荣.微小型航空发动机滚动轴承复合润滑冷却技术[J].航空动力学报,2011,26(8):1736-1743. |
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| 作者姓名： | 李果 韩树军 丁水汀 杜发荣 |
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| 作者单位： | 北京航空航天大学能源与动力工程学院航空发动机气动热力国家级重点实验室,北京,100191 |
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| 摘 要： | 通过CFD（计算流体动力学）分析,研究了调节喷入轴承腔内的混合油流量对腔内压力、气液两相分布规律的影响以及油气比的变化对轴承润滑冷却效果的影响.结果表明：混合油流量增大时,油气比增大,但轴承腔内压力分布规律基本不变,滚珠和保持架上受力不均效果增加;气液两相在轴承腔上游分布不均匀,滚珠位置对分布有影响;滚珠和保持架上油膜厚度分布不均,混合油流量的增加并不代表润滑效果的提升;混合油的冷却作用大于空气,油气比增大时可以增强轴承的冷却效果.
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| 关 键 词： | 微小型航空发动机 轴承腔 油气比 润滑 冷却 |
| 收稿时间： | 2010/7/14 0:00:00 |
| 修稿时间： | 2011/3/16 0:00:00 |
Complex lubrication and cooling technology of rolling bearing on micro aero-engines |
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| LI Guo,HAN Shu-jun,DING Shui-ting and DU Fa-rong.Complex lubrication and cooling technology of rolling bearing on micro aero-engines[J].Journal of Aerospace Power,2011,26(8):1736-1743. |
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| Authors: | LI Guo HAN Shu-jun DING Shui-ting and DU Fa-rong |
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| Institution: | LI Guo,HAN Shu-jun,DING Shui-ting,DU Fa-rong(National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics,School of Jet Propulsion,Beijing University of Aeronautics and Astronautics,Beijing 100191,China) |
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| Abstract: | Based on computational fluid dynamics(CFD) method,the pressure and gas/liquid distribution in rolling bearing chamber and the effect of lubrication and cooling through varied gas-oil ratio were researched.The results show that the pressure distribution is not clearly changed with the increase of gas-oil ratio but the inhomogeneous force is enlarged in ball and cage.The gas/liquid two-phase flow distribution is not homogenized in rolling bearing chamber upstream,and then gradually becomes regular downstream ... |
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| Keywords: | micro aero-engine bearing chamber gas-oil ratio lubrication cooling |
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