液黏调速离合器摩擦副润滑油道设计及特性分析

为了使液黏调速离合器摩擦副间隙尽可能地均匀分布，满足工作性能和散热要求。基于不可压缩流体控制方程和Shear Stress Transport（SST）湍流模型，建立了两种油道结构的三维流场模型，应用ANSYS CFX对润滑油道的流场进行数值模拟计算，研究了油道结构对摩擦副入口处油压和流速分布的影响。结果表明：润滑油道结构对摩擦副入口压力和流速影响比较明显，改进后的油道结构压力损失较小且喷油孔的油压和流速分布比较均匀，有助于摩擦片和对偶钢片间隙的均匀分布，能更好地满足液黏传递转矩和散热的要求。

The design and characteristic analysis of lubricating oil channel of friction pair in hydro-viscous drive

In order to meet the requirement of working performance and cooling of hydro viscous drive，the gap of friction pair should be distributed uniformly as well as possible.Based on the governing equations of incompressible fluid and Shear Stress Transport(SST) turbulence model，three dimensional flow field models of two different oil channel structures were established.The numerical simulation of the flow field of lubricating oil channel was computed by the ANSYS CFX.The influence of the oil channel structure on pressure and velocity distribution of the entrance to friction pair was researched.The results show that the oil channel structure has a significant effect on the pressure and velocity distribution of the entrance to friction pair.The improved oil channel has the less pressure loss.Meanwhile，the pressure and velocity of nozzle opening well distributed，which could make the gap of multidisc friction and steel plates-uniformly distribute to meet the requirement of hydro-viscous torque transmission and cooling.