Nonlinear boundary slip of fluid flowing over solid surface

被引：0
作者：
Ping Zhou
Cheng-wei Wu
Guo-jun Ma
机构：
[1] Dalian University of Technology,State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics
来源：
Journal of Central South University of Technology | 2007年 / 14卷
关键词：
boundary slip; fluid flow; slip velocity;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A general nonlinear slip of fluid flow at a solid surface is proposed in the present paper. The theoretical prediction shows that the slip length keeps as a constant (an initial slip length) at a small shear rate, then increases with the shear rate, and finally is approximately proportional to the slip velocity at a high shear rate. The nonlinear slips occurring at both of the simple flow in a parallel sliding system and a complex flow between two approaching spheres are investigated. It is found that the initial slip length controls the slip behavior at a small shear rate, but a critical shear rate controls the boundary slip at the high shear rate. Our theoretical predictions are in well agreement with the experimental measurements of boundary slips for both a simple fluid and a complex fluid.
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页码：30 / 33
页数：3
相关论文
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