高铁轴承试验台陪试轴承腔气液两相流压力分析.pdfVIP

学兔兔 ! Q二 轴承 2014年5期 33—36 CN41—114g／TH Bearing 2014，No．5 ．．I试验与分析 高铁轴承试验台陪试轴承腔气液两相流 压力分析 郭丹丹 ，李伦 ，李济顺 ’ (河南科技大学 a．机电工程学院；b．河南省机械设计及传动系统重点实验室，河南 洛阳 471003) 摘要：以高铁轴承试验台陪试轴承腔为研究对象，根据陪试轴承的载荷和转速，采用VOF模型和RNG，c—s湍 流模型对高铁轴承试验台陪试轴承腔简化模型内气液两相流进行数值模拟，分析轴承转速、回油孔直径对陪试 轴承腔压的影响，获得气液两相流中润滑油压力场和速度场在轴承腔内的分布情况。结果表明，随着试验台陪 试主轴转速的提高，轴承腔压随之增大；随着回油孔直径增大，出口附近轴承腔压降低比其他部位腔压变化更 为明显。 关键词：滚动轴承；高铁轴承；试验台；气液两相流；腔压 中图分类号：TH133．33 文献标志码：B 文章编号：1000—3762(2014)05—0033—04 Analysis on Pressure on Gas—-Liquid Two—-Phase Flow in Test Bearing Chamber of High——Speed Railway Bearing Test Rig Guo Dandan ，Li Lun ，Li Jishun (a．School of Mechatronics Engineering；b．Henan Key Laboratory for Machinery Design and Transmission System，Henan University of Science and Technology，Luoyang 47 1003，China) Abstract：Taking the test bearing chamber of high—speed railway beating test rig as a research object，according to the load and rotating speed of test beating．the gas—liquid two—phase flow in the simplified test bearing chamber mod— el 0f high—speed railway bearing test rig is numericMly simulated by the VOF model and the RNG，(一8turbulence mode1．The influence of the bearing rotating speed and oil return hole diameter on chamber pressure of the test bearing is analyzed，and the distribution of pressure field and velocity field of the lubricating oil in gas—liquid two—phase flow in the bearing chamber are obtained．The results show that the bearing chamber pressure increases with the increase of rotating speed of test spi