摘要
基于紊流整体流动模型和 Ｍｏｏｄｙ 壁面摩擦系数方程，简化了大间隙环流三维流场非线性偏微分控制方程组，推导了零阶摄动方程，并采用数值方法对大间隙环流中偏心转子静特性进行了深入研究．实例计算结果表明：大间隙环流中转子与以轴承和密封为代表的小间隙环流中转子的静特性有很大不同；壁面摩擦系数沿周向变化；
Based on the turbulent bulk flow theory and Moody wall friction coefficients equation, 3D non linear partial differential equations of large gap annular flow field are simplified, and zero order perturbation equations derived. The static characteristics of eccentric rotor have been investigated with numerical method. The results show that there are many differences in the static characteristics of the rotor in large gap annular flow and that in bearings and seals, and the wall friction coefficient changes circumferentially. The results also show that the wall roughness and the eccentricity ratio have considerable effects on the static characteristics in large gap annular flow.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
1999年第3期261-265,共5页
Tribology
基金
国家"九五"攀登计划资助
关键词
大间隙环流
整体流动模型
壁面摩擦
转子静特性
large gap annular flow
turbulent bulk flow theory
wall friction
rotor static characteristics
