摘要
齿轮箱内部的润滑油运动轨迹对机械旋转部件的功率传递和冷却性能有着重大影响。基于自主研制的高速齿轮箱,对润滑油流场和压力场进行仿真分析,利用RNG k-ε端流模型理论对连续方程、流量方程、湍动能方程和湍动能耗散率方程进行解算。对齿轮箱模型进行适当简化,采用动网格理论和PRESTO离散方法开展仿真分析,并对不同工况的计算结果进行对比分析。通过分析获得轴承进油孔质量流量分布特征,以及轴承润滑流道中润滑油的实际油量,为后续轴承润滑最佳注油量的定量分析,以及齿轮箱结构设计和系统改进提供理论参考。
The movement of lubricating oil in the gear box has a great influence on the power transmission and cooling per- formance of the mechanical rotating parts.Based on a high-speed gear-box of independent development, the flow field and pressure field of lubricating oil was analyzed by simulation, the equations were solved by utilizing RNG k-ε ending flow model, including continuous equation, flow equation, turbulent energy equation and turbulent dissipation rate equation. By simplifying the gearbox model, the simulation analysis of the model was carried out by using the dynamic meshing theory and discrete PRESTO method, and the calculation results at different operating conditions were analyzed.The flowing char- acteristics in inlet holes of gearbox were obtained according to the analysis result, and the actual lubrication flowing of dif- ferent bearings were also obtained.These results can be used for quantitative analysis of optimal bearing lubrication oil lev- el,which also provide a theoretical reference for the structure design and systematic improvement of gearbox.
出处
《润滑与密封》
CAS
CSCD
北大核心
2018年第2期127-132,共6页
Lubrication Engineering
基金
中国中车2017年科技研究开发计划(2017CDB040)
关键词
高速动车组
齿轮箱
流场
压力场
high-speed train
gearbox
flow field
pressure field
