上海交通大学学报

上海交通大学学报（自然版） ›› 2011, Vol. 45 ›› Issue (11): 1619-1625.

• 机械工程 • 上一篇    下一篇

流体黏温特性对液黏调速离合器传动特性的影响

黄家海1，方文敏2，邱敏秀1   

  1. (1.浙江大学 流体传动及控制国家重点实验室，杭州 310027; 2.解放军炮兵学院，合肥 230031)
  • 收稿日期:2010-11-12 出版日期:2011-11-30 发布日期:2011-11-30
  • 基金资助:

    国家自然科学基金资助项目(50475106)

Effect of ViscosityTemperature Characteristics on the Behavior of Hydro-Viscous Drive

  1. (1. State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China; 2. Artillery Academy, Hefei 230031, China)
  • Received:2010-11-12 Online:2011-11-30 Published:2011-11-30

摘要： 液黏调速离合器主、从动摩擦盘之间存在的转速差会导致油温升高，进而影响其传动性能.以一对摩擦副间隙内流体流场为研究对象（摩擦盘表面无油槽），建立定常、层流条件下的简化数学模型,同时考虑流体黏温特性的影响，运用数值计算方法获得了流场温度、剪应力及转矩的数值解.在此基础上，搭建了液黏传动实验台进行实验验证研究.结果表明：受流体黏温特性影响，输出转矩与输出转速之间呈非线性关系；当其他工作条件不变时，输出转矩随输入流量的增加而增加，尤其在低输出转速段，转矩增量较明显.

关键词: 液黏传动, 传热, 数值计算

Abstract: The object of this work is to investigate the effect of temperature rise resulting from rotary speed difference between driving and driven plates on the performance of hydroviscous drive. A simplified mathematic model of the steady and laminar flow between two flat plates was established with consideration of viscositytemperature characteristics. The numerical solution of temperature, shearing stress and viscous torque were obtained by using computational fluid dynamics (CFD) code FLUENT. Then, an experiment rig was designed and developed for this work. The numerical and experimental results show that the relationship between output viscous torque and output rotary speed is nonlinear because of viscositytemperature characteristics. It also indicates that viscous torque increases as input flow rate increases, and the magnitude of viscous torque increment is significant when the output rotary speed is low. This research provides a theoretical foundation for the optimization of the performance of hydroviscous drive.
Key words：

Key words: hydro-viscous transmission, heat transfer, numerical calculation