摘要
利用考虑微结构与微旋效应的微极流体理论来研究薄膜润滑的特性。微极效应将引起等效黏度的增加,从而影响油膜厚度。它对压力分布和膜厚形状的影响很小。数值模拟结果表明,等效黏度的增加效应与实验值有很好的类似性。
Thin film lubrication (TFL) has been a research hot spot in recent years,which leaves many black areas to tribologists.The micropolar theory for fluids is adopted to account for the microstructure and microrotation in TFL.Simulation results reveal that micro-polarity will give rise to an increase in effective viscosity.Micro-polarity has little effect on the pressure profile and film shape,but has an influence on the film thickness in TFL.The effective viscosity grown with micro-polarity is in very close to that of experimental results presented in a preceding work.The present work will shed some light into the mechanism of TFL.
出处
《力学学报》
EI
CSCD
北大核心
2004年第2期208-212,共5页
Chinese Journal of Theoretical and Applied Mechanics
基金
国家自然科学基金(90206022)
国家杰出青年科学基金(50025515)~~
