A mass-conservative average flow model based on finite element method for complex textured surfaces  

作　　者：XIE Yi LI YongJian SUO ShuangFu LIU XiangFeng LI JingHao WANG YuMing 

机构地区：[1]State Key Laboratory of Tribology,Tsinghua University

出　　处：《Science China(Physics,Mechanics & Astronomy)》2013年第10期1909-1919,共11页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Basic Research Program of China(Grant No.2009CB724304);the National Key Technology R&D Program(Grant No.2011BAF09B05);the National Natural Science Foundation of China(Grant No.50975157);the Key Research Program of the State Key Laboratory of Tribology of Tsinghua University(Grant No.SKLT08A06)

摘　　要：A mass-conservative average flow model based on the finite element method(FEM) is introduced to predict the performances of textured surfaces applied in mechanical seals or thrust bearings.In this model,the Jakobsson-Floberg-Olsson(JFO) boundary conditions are applied to the average flow model for ensuring the mass-conservative law.Moreover,the non-uniform triangular grid is utilized,which can deal with the problem of complex geometric shapes.By adopting the modeling techniques,the model proposed here is capable of dealing with complex textured surfaces.The algorithm is proved correct by the numerical experiment.In addition,the model is employed to gain further insight into the influences of the dimples with different shapes and orientations on smooth and rough surfaces on the load-carrying capacity.A mass-conservative average flow model based on the finite element method （FEM） is introduced to predict the performances of textured surfaces applied in mechanical seals or thrust bearings. In this model, the Jakobsson-Floberg-Olsson （JFO） bound- ary conditions are applied to the average flow model for ensuring the mass-conservative law. Moreover, the non-uniform tri- angular grid is utilized, which can deal with the problem of complex geometric shapes. By adopting the modeling techniques, the model proposed here is capable of dealing with complex textured surfaces. The algorithm is proved correct by the numeri- cal experiment. In addition, the model is employed to gain further insight into the influences of the dimples with different shapes and orientations on smooth and rough surfaces on the load-carrying capacity.

关 键 词：mass-conservative average flow model complex textured surfaces JFO boundary conditions finite element method 

分 类 号：TH136[机械工程—机械制造及自动化]