摘要
基于H irs湍流润滑理论,针对端面动压密封(或推力轴承润滑)推导了极坐标系下的湍流计算模型。推导出的湍流Reynolds方程中有3处包含湍流修正系数。与传统的通过单纯湍流Reynolds方程进行润滑计算不同,本模型还可以方便地计算流场各点切向和径向平均速度,得到流场速度分布,从而可以更精确地直接计算流量。对于一种新型双螺旋槽端面流体动密封装置,本文湍流模型计算得到的泄漏量与试验值吻合,适用于压力流动和速度流动共存的湍流润滑计算。
Based on Hirs bulk flow theory,a turbulence model aiming at hydrodynamic face seal （or thrust bearing） in the polar coordinates system was presented. Turbulence Reynolds equation deduced contains three turbulence correction items. Different from the traditional model turbulent lubrication problems were solved solely by using turbulence Reynolds equation, the new model can obtain conveniently the velocity profile both tangential and radial, from which flow rate can be further calculated with more precision. Applying the model to a new double spiral groove face seal,leakage rate calculated coincides with the experimental data. The model can be applied to cases where Couette flow and Poiseuille flow are coupied.
出处
《润滑与密封》
EI
CAS
CSCD
北大核心
2006年第10期110-112,共3页
Lubrication Engineering
