J4 ›› 2016, Vol. 13 ›› Issue (3): 436-448.doi: 10.1016/S1672-6529(16)60317-7

• 论文 • 上一篇    下一篇

Electro-magnetohydrodynamic Flow of Biofluid Induced by Peristaltic Wave: A Non-newtonian Model

Gopal Chandra Shit1, Nayan Kumar Ranjit1, Aniruddha Sinha2   

  1. 1. Department of Mathematics, Jadavpur University, Kolkata - 700032, India
    2. Yogoda Satsanga Palpara Mahavidyalaya, Purba Medinipur - 721458, India
  • 收稿日期:2015-11-18 修回日期:2016-05-18 出版日期:2016-07-10 发布日期:2016-07-10
  • 通讯作者: Gopal Chandra Shit E-mail:gopal_iitkgp@yahoo.co.in
  • 作者简介:Gopal Chandra Shit1, Nayan Kumar Ranjit1, Aniruddha Sinha2

Electro-magnetohydrodynamic Flow of Biofluid Induced by Peristaltic Wave: A Non-newtonian Model

Gopal Chandra Shit1, Nayan Kumar Ranjit1, Aniruddha Sinha2   

  1. 1. Department of Mathematics, Jadavpur University, Kolkata - 700032, India
    2. Yogoda Satsanga Palpara Mahavidyalaya, Purba Medinipur - 721458, India
  • Received:2015-11-18 Revised:2016-05-18 Online:2016-07-10 Published:2016-07-10
  • Contact: Gopal Chandra Shit E-mail:gopal_iitkgp@yahoo.co.in
  • About author:Gopal Chandra Shit1, Nayan Kumar Ranjit1, Aniruddha Sinha2

摘要:

This article aims to develop a mathematical model for peristaltic transport of magnetohydrodynamic flow of biofluids through a micro-channel with rhythmically contracting and expanding walls under the influence of an applied electric field. The couple stress fluid model is considered to represent the non-Newtonian characteristics of biofluids. The velocity slip condition at the channel walls is taken into account because of the hydrophilic/hydrophobic interaction with negatively charged walls. The essential features of the electromagnetohydrodynamic flow of biofluid through micro-channels are clearly highlighted in the variations of the non-dimensional parameters of the physical quantities of interest such as the velocity, wall shear stress, pressure gradient, pressure rise per wave length, frictional force at the channel walls and the distribution of stream function. It reveals that the flow of biofluid is appreciably influenced by the sufficient strength of externally applied magnetic field and electro-osmotic parameter. The velocity slip condition reduces the frictional force at the channel wall. Moreover, the formation of the trapping bolus strongly depends on electro-osmotic parameter and magnetic field strength.

关键词: peristaltic transport, couple stress fluid, magnetohydrodynamics, electro-osmosis

Abstract:

This article aims to develop a mathematical model for peristaltic transport of magnetohydrodynamic flow of biofluids through a micro-channel with rhythmically contracting and expanding walls under the influence of an applied electric field. The couple stress fluid model is considered to represent the non-Newtonian characteristics of biofluids. The velocity slip condition at the channel walls is taken into account because of the hydrophilic/hydrophobic interaction with negatively charged walls. The essential features of the electromagnetohydrodynamic flow of biofluid through micro-channels are clearly highlighted in the variations of the non-dimensional parameters of the physical quantities of interest such as the velocity, wall shear stress, pressure gradient, pressure rise per wave length, frictional force at the channel walls and the distribution of stream function. It reveals that the flow of biofluid is appreciably influenced by the sufficient strength of externally applied magnetic field and electro-osmotic parameter. The velocity slip condition reduces the frictional force at the channel wall. Moreover, the formation of the trapping bolus strongly depends on electro-osmotic parameter and magnetic field strength.

Key words: peristaltic transport, couple stress fluid, magnetohydrodynamics, electro-osmosis