干式气体端面密封性能的有限元分析中形函数的选择  

Selection of a Shape Function in Finite Element Analysis for a Spiral Groove Dry Gas Seal

作　　者：尹晓妮[1] 彭旭东[1] 

机构地区：[1]中国石油大学机电工程学院,山东东营257061

出　　处：《润滑与密封》2006年第3期13-14,18,共3页Lubrication Engineering

基　　金：国家自然科学基金(50575152);教育部科学技术研究重点项目基金资助(03107)

摘　　要：基于二维稳态可压缩气体雷诺方程,采用不同形状函数,编写了计算光滑面螺旋槽干式气体端面密封(S-DGS)端面压力分布的有限元程序。利用计算程序比较了4种形状函数对S-DGS密封性能的计算效率和计算精度的影响,认为三角形单元在满足高计算精度的同时,运算速度也最快。密封性能参数计算值与文献值吻合较好。A finite element program using different shape functions for a spiral groove dry gas seal （S-DGS） with smooth surfaces was designed based on Reynolds equation for compressible gases. Comparisons of the calculation effectiveness and calculation precision for a S-DGS was finished with four kinds of shape functions. The results show that the shape function of the triangular element is the best for a S-DGS at moderate speeds with the fastest calculation velocity while maintain higher precision. The calculated results were accord with the results published in the concerned literature.

关 键 词：螺旋槽 干式气体密封 有限元分析 形状函数 

分 类 号：TH136[机械工程—机械制造及自动化]