摘要
针对超薄气膜的润滑问题,根据稀薄气体动力学理论,提出了一种具有3个可调参数的2阶滑流速度边界的数学模型,通过数值模拟得到了3个参数的确切数值,经连续方程积分得到了超薄气膜润滑的修正雷诺方程。对倾斜平板的超薄气膜润滑的压力分布和承载能力进行了数值分析,与采用线性波尔兹曼方法的计算结果吻合很好。
Based on rarefied gas dynamics theory, a mathematical model of second--order velocity slip--flow boundary with three adjustable coefficients was proposed for ultra--thin gas film lubrication. The three coefficients were obtained through mathematical simulations. By integrating continuum equations, a modified Reynolds equation was gotten for ultra--thin gas film lubrication. The gas film lubrication characteristics were analyzed and simulated mathematically for an inclined plane. These results of pressure distribution and load carrying capacity accord well with those from linear Boltzmann method.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2006年第5期533-535,共3页
China Mechanical Engineering
基金
国家自然科学基金资助项目(10476019)
西安电子科技大学青年工作站基金资助
关键词
超薄气膜
润滑
二阶滑流
雷诺方程
ultra-- thin gas film
lubrication
second-- order slip flow
reynolds equation
