Physical hydrodynamic propulsion model study on creeping viscous flow through a ciliated porous tube

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• 作者：NOREEN SHER AKBAR ; ADIL WAHID BUTT ; DHARMENDRA TRIPATHI ; O ANWAR BÉG
• 关键词：Viscous fluid ; ciliated tube ; porous medium ; Darcy number ; permeability ; low Reynolds number ; hydrodynamic slip ; biomimetic propulsion.
• 刊名：Pramana
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：88
• 期：3
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics, general; Astronomy, Observations and Techniques; Astrophysics and Astroparticles;
• 出版者：Springer India
• ISSN：0973-7111
• 卷排序：88

文摘

The present investigation focusses on a mathematical study of creeping viscous flow induced by metachronal wave propagation in a horizontal ciliated tube containing porous media. Creeping flow limitations are imposed, i.e. inertial forces are small compared to viscous forces and therefore a very low Reynolds number (Re ≪ 1) is taken into account. The wavelength of metachronal wave is also considered to be very large for cilia movement. The physical problem is linearized and exact solutions are developed for the differential equation problem. Mathematica software is used to compute and illustrate numerical results. The influence of slip parameter and Darcy number on velocity profile, pressure gradient and trapping of bolus are discussed with the aid of graphs. It is found that with increasing magnitude of the slip parameter, the trapped bolus inside the streamlines increases in size. The study is relevant to biological propulsion of medical micromachines in drug delivery.