摘要
为了研究离合器摩擦副流致运动效应,将大涡模拟(LES)的壁面自适应局部涡粘模型引入到介观模型中的二维单相自由面格子Boltzmann方法(LBM)中,建立了压力润滑条件下的润滑油与摩擦元件LBM-LES流固耦合数值模拟体系。通过设定不同润滑油喷口与摩擦元件的相对位置,不同的喷油流量以及不同的油温,模拟了摩擦元件在与润滑油相互作用下的轴向运动过程,得到了不同喷油口位置、喷油流量和油温下的摩擦元件轴向运动规律,并根据数值模拟结果提出了一种槽式喷油口,有效抑制了摩擦元件的流致运动效应,为湿式多片离合器性能改进提供了理论依据。
Axial movement of wet clutch friction pair caused by lubricating oil flow is one of the serious factors increasing drag losses and clutch failures. In order to study the friction pair axial movement caused by lubricating oil flow, a large eddy simulation model, wall adaptive local eddy viscosity model, was imported into a 2D single phase free surface mesoscopic model using lattice Boltzmann method to establish the friction parts and lubricating oil＇s fluid-solid-interaction LBM-LES digital simulation system under pressured lubricating condition. The influences of the relative position of oil nozzles, oil flow quantity and oil temperature on the friction pair axial moving process were investigated by digital simulation. Simulation results reveal that the friction pair axial motion law was affected by the position of oil nozzles and oil flow quantity. According to the simulation results, a novel oil groove was designed in place of traditional oil holes to inhibit the axial flow-caused-motion effect of the friction parts. This study may provide a theoretical basis for wet clutch improvement.
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2017年第2期490-497,共8页
Journal of Jilin University:Engineering and Technology Edition
基金
国家探索研究项目
作者简介
李慎龙（1982-）,男,研究员,博士.研究方向：车辆传动系统设计技术.E-mail：lishenlong2004@sina.com
通信作者：刘树成（1986-）,男,工程师,博士.研究方向：车辆液力传动技术.E-mail：liushucheng@vip.126.com
