基于CFD的弧齿圆柱齿轮喷油润滑气液两相流分析  

Analysis on gas-liquid multi-phase flow of spray lubrication for arc-tooth cylindrical gears based on CFD

作　　者：莫帅 党合玉 邹振兴 唐文杰 岳宗享 高瀚君 MO Shuai;DANG He-yu;ZOU Zhen-xing;TANG Wen-jie;YUE Zong-xiang;GAO Han-jun(School of Mechanical Engineering,Tiangong University,Tianjin 300387;Tianjin Key Lab of Modern Electromechanical Equipment Technology,Tianjin 300387;Key Lab of Virtual Reality Technology and System,Beihang University,Beijing 100083)

机构地区：[1]天津工业大学机械工程学院,天津300387 [2]天津市现代机电装备技术重点实验室,天津300387 [3]北京航空航天大学虚拟现实技术与系统国家重点实验室,北京100083

出　　处：《机械设计》2022年第1期26-32,共7页Journal of Machine Design

基　　金：天津市教委科研计划项目(2017KJ083)。

摘　　要：该文研究弧齿圆柱齿轮在喷油润滑时喷油条件对润滑状态的影响,通过计算流体动力学(CFD)对其计算流域建模并进行简化与仿真计算。计算得到随着齿轮转速、喷油距离和喷油速度的变化时,弧齿圆柱齿轮啮合区油气率和气液总压的变化规律,并进行综合分析。结果表明:影响弧齿圆柱齿轮润滑性能的关键因素是齿轮啮合区气液总压的大小,气液总压越大,润滑油进入啮合区的含量越小,润滑性能越差。因此,为了得到最好的润滑效果,可提高喷油速度、减小喷油距离,进而提高弧齿圆柱齿轮啮合区的油气率,增强对弧齿圆柱齿轮的润滑效果。In this article,the analysis in conducted on the influence of injection condition of arc-tooth cylindrical gears on lubrication during the process of injection lubrication.The computational fluid dynamics(CFD)is used to model the calculated air domain of aero arc-tooth cylindrical gears,in order to simplify and simulate the calculation.The variation law of oil-air ratio and total pressure in the meshing zone of arc-tooth cylindrical gears is calculated.The analysis is conducted on the change of gear speed,injection distance and spray velocity.These results show that the key influencing factor of lubrication of arc-tooth cylindrical gears is total pressure in the gear meshing zone.With the ever-growing total pressure,content of lubricating oil entering the meshing zone is minor,and lubrication is bad.Therefore,in order to obtain the best lubrication effect,the injection speed can be increased;the injection distance can be reduced;the oil-gas rate of the gear meshing zone can be improved;the lubrication effect of the arc-tooth cylindrical gears can be enhanced.

关 键 词：弧齿圆柱齿轮 喷油润滑 计算流体动力学 油气率 气液总压 

分 类 号：TH117[机械工程—机械设计及理论]