螺旋槽干气密封槽形参数的协调优化  

TRADE-OFF OPTIMIZATION FOR THE GEOMETRIC PARAMETERS IN SPIRAL GROOVED GAS SEALS

作　　者：丁雪兴[1] 程香平[1] 张伟政[1] 俞树荣[1] 杜兆年[1] 

机构地区：[1]兰州理工大学石油化工学院,兰州730050

出　　处：《力学与实践》2007年第3期26-29,25,共5页Mechanics in Engineering

基　　金：甘肃省自然科学基金(3ZS061-A25-051);甘肃省教育技术基金(0615-01)

摘　　要：应用PH线性化方法、迭代法,近似求解了螺旋槽内稳态流动场的非线性雷诺方程,求得了气体动压和速度分布的解析解．利用多目标优化方法构建了气膜刚度与泄漏量之比的协调函数,并对该目标函数进行了近似求解,获得了最佳的螺旋槽几何参数值．The operating stability and reliability of spiral grooved gas seals are closely related to geometric parameters, so it is important to optimize these parameters. Using PH linearization and iterative method, a nonlinear Reynolds equation for a steady-state flow field is solved, and the approximate expressions for gas dynamic pressure and velocity in the spiral groove are obtained. And then using multi-objective optimization method, a trade-off function of rigidity-to-spillage ratio is derived and the optimized geometric parameters are obtained by solving the objective function.

关 键 词：螺旋槽 干气密封 刚漏比 协调优化 

分 类 号：TH136[机械工程—机械制造及自动化]