摘要
为了研究在软启动过程中,液粘调速离合器摩擦副间隙内油膜形态的演变机理,基于计算流体动力学理论,建立流体油膜的计算模型,并考虑油膜的粘温特性,采用Fluent软件对摩擦副间隙内的油膜流场进行求解,获得了油膜的多物理场分布。研究结果表明:界面间油膜的最大温升从油膜出口位置转移至油膜入口位置附近;油膜在中间位置及出口位置的温度和径向速度呈现出抛物线状分布;影响摩擦副间隙内油膜最大动压的主要因素是油膜厚度与主、被动片相对转速;油膜的粘性扭矩输出呈现先增加后减小的趋势,粘性扭矩峰值出现在启动初期。
s:The oil film state between friction pairs of hydro-viscous drive in the soft-start was researched in order to determine the change mechanism. Based on the CFD theory, the calculation model for the oil film was built, taking into account the effect of viscosity temperature characteristic. The flow between friction pairs was solved by using Fluent and the physical distribution of oil film was obtained accordingly. The research results show that the maxi-mum temperature rise is transferred from the outlet to the inlet. The parabolic law can be speculated from the distri-bution of temperature and radial velocity at the intermediate position and the outlet. The main factors that affect the maximum dynamic pressure of oil film are film thickness and the relative velocity between the disks. The viscous torque increases rapidly and then declines slowly. The maximum viscous torque appears at the early stage of the soft-start.
出处
《流体传动与控制》
2015年第3期40-45,共6页
Fluid Power Transmission & Control
基金
江苏省普通高校研究生科研创新计划项目(CXLX13_643)
国家自然科学基金青年基金项目(51205170)
江苏省自然科学基金青年基金(BK2012292)
中国博士后科学基金第六批特别资助(2013T60502)
关键词
液粘传动
软启动
油膜态
数值模拟
hydro-viscous drive
soft-start
oil film state
numerical simulation
