| 圆形Rayleigh台阶腔体流动特性的数值模拟 |
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| 引用本文： | 申峰,刘赵淼. 圆形Rayleigh台阶腔体流动特性的数值模拟[J]. 中国矿业大学学报, 2011, 0(5) |
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| 作者姓名： | 申峰 刘赵淼 |
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| 作者单位： | 北京工业大学机械工程与应用电子技术学院; |
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| 基金项目： | 科技部重大专项基金项目(2009ZX04002-031); 国家自然科学基金项目(11002007,11072011); 北京工业大学博士科研启动基金项目(X000105201101) |
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| 摘 要： | 为了揭示流体流动特性对静压支承油腔承载力的影响,根据圆形Rayleigh台阶腔体流动特性,将流动分为三部分:入口中心对称碰撞流动、凹槽径向发散流动和节流边微流动.采用计算流体力学(CFD)方法建立计算模型,对腔体几何参数(e,h)和入口雷诺数(Re)等因素对流场涡胞的影响进行数值模拟.结果表明:Rayleigh台阶结构腔体内流动较平行圆盘间流动更加复杂,有涡胞结构存在;腔体内压强较高,具有更高的承载力;当200
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| 关 键 词： | Rayleigh台阶 静压支承 节流边 涡胞 径向流动 |
Numerical simulation on flow characteristics of round Rayleigh step cavity |
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| SHEN Feng,LIU Zhao-miao. Numerical simulation on flow characteristics of round Rayleigh step cavity[J]. Journal of China University of Mining & Technology, 2011, 0(5) |
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| Authors: | SHEN Feng LIU Zhao-miao |
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| Affiliation: | SHEN Feng,LIU Zhao-miao(College of Mechanical Engineering and Applied Electronics Technology,Beijing University of Technology,Beijing 100124,China) |
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| Abstract: | In order to reveal the effect of flow characteristics on the load capacity of oil cavity,the flow of round Rayleigh step cavity in hydrostatic lift was divided into three regions: the axisymmetric jet impinging flow,radial source flow and film flow.The computational fluid dynamics(CFD) method was used to build a calculation model and the influences of geometry(e,h) parameters and the Reynolds number on the vortices were simulated.The results show that there are complex vortices in the flow field of the roun... |
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| Keywords: | Rayleigh step hydrostatic lift film land vortex radial flow |
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