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Peristaltic flow of a couple stress fluid in an annulus: Application of an endoscope

被引：205
作者：
Mekheimer, Kh. S. [1 ]
Elmaboud, Y. Abd [1 ]
机构：
[1] Al Azhar Univ, Fac Sci, Dept Math, Cairo 11884, Egypt
来源：
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS | 2008年 / 387卷 / 11期
关键词：
peristaltic flow; endoscope; couple stress fluid; pressure rise;
D O I：
10.1016/j.physa.2007.12.017
中图分类号：
O4 [物理学];
学科分类号：
0702 [物理学];
摘要：
This paper discusses the influence of an endoscope on the peristaltic flow of a couple stress fluid in an annulus under a zero Reynolds number and long wavelength approximation. The inner tube is uniform, rigid, while the outer tube has a sinusoidal wave traveling down its wall. Analytical expressions for the axial velocity, stream function and axial pressure gradient are established. The flow is investigated in a wave frame of reference moving with the velocity of the wave. Numerical calculations are carried out for the pressure rise, frictional forces and trapping. The features of the flow characteristics are analyzed by plotting graphs and discussed in detail. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：2403 / 2415
页数：13
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