柱面气膜密封界面结构与性能分析  

Analysis of performance and interface structure of cylinder gas film seal

作　　者：马纲[1] 栗秀花[1] 沈心敏[1] 胡广阳[2] 

机构地区：[1]北京航空航天大学机械工程及自动化学院,北京100191 [2]中国航空工业集团公司沈阳发动机设计研究所,沈阳110015

出　　处：《航空动力学报》2011年第11期2610-2616,共7页Journal of Aerospace Power

基　　金：航空基金(20080451012);国家自然科学基金(51075018)

摘　　要：选择并针对柱面气膜密封中六种典型的螺旋槽派生界面结构,基于有限元数值分析方法进行了气膜力学特性及密封特性的定量计算和分析比较;建立了不同界面型式的密封特性与可压缩数、膜厚的关系曲线;研究分析了不同界面结构密封特性变化特点和应用中的优劣势,为密封系统研究和设计选型提供了理论基础及指导.分析中的每种密封界面结构参数均为依据有关文献选取的优化或近似优化数据,采用的计算分析方法可拓展应用到其他结构中.The type of interface structure obviously influences the performance and design of cylinder gas seal.The paper selected six typical interface structures derived from spiral groove,and performed quantitative analysis of mechanical properties and sealing performance of the gas-film based on finite element numerical analysis method;the relationship between sealing performance of different interfaces and compressibility number（and film thickness） was established;the sealing properties of different interface types and possible advantages and disadvantages of their application were analyzed,providing a basis for selection and design guidance of cylinder gas seal.The structural parameters of these interfaces are selected based on optimal or approximately optimal data of related literature.

关 键 词：柱面气膜密封 界面结构 有限元法 气膜特性 定量分析 

分 类 号：V233.42[航空宇航科学与技术—航空宇航推进理论与工程]