基于CFD的均布圆形微孔活塞环数值分析
李岩霖,吉华,王天豪,李倩,冯东林
(四川大学 化学工程学院,四川 成都 610065)
摘要:建立了基于CFD的均布圆形微孔活塞环的流体模型,研究了在一定工况下圆形微孔活塞环间隙的压力分布规律,以及圆形微孔的孔深hp和开孔比SP对活塞环间隙的流量Q、承载力Fo和摩擦力Ff的影响。结果表明,hp取3~5 μm之间时,活塞环间隙有较大流量,可以改善润滑效果。hp较小时选用较小SP,hp较大时选用较大SP可获得较大承载力;若欲减小摩擦,需选用较大SP。
关键词:圆形微孔;活塞环;摩擦性能;数值模拟
中图分类号:TQ021.1 文献标志码:A doi:10.3969/j.issn.1006-0316.2019.06.004
文章编号:1006-0316 (2019) 06-0018-05
CFD based Analysis of Piston Rings with Uniform Circular Micro-pores
LI Yanlin,JI Hua,WANG Tianhao,LI Qian,FENG Donglin
( School of Chemical Engineering, Sichuan University, Chengdu 610065, China )
Abstract:A CFD based model was developed for the piston ring with uniform circular micro-pores. At different working conditions, the pressure distribution of clearance flow was studied, and the effects of pore depth hp and area ratio SP on the clearance flux, load carrying capacity Fo and friction force Ff were also discussed. The results showed that when hp is between 3 and 5 microns, the flux of the clearance and the lubrication effect are increased. In order to increase Fo, it is better to select small SP when hp is small, and select big SP when hp is big. In order to reduce friction, it is better to select big SP.
Key words:micro-pore;piston rings;tribology performance;numerical analysis
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收稿日期:2018-12-18
基金项目:德阳重点科学技术研究项目(GXCC20180013)
作者简介:李岩霖(1992-),男,河南新乡人,硕士研究生,主要研究方向为流体机械;吉华(1972-),男,四川武胜人,博士,副教授,主要研究方向为流体机械。
 

 

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