MAGNETOHYDRODYNAMIC PERISTALTIC FLOW OF A COUPLE STRESS FLUID THROUGH COAXIAL CHANNELS CONTAINING A POROUS MEDIUM

Author:

TRIPATHI DHARMENDRA1,BÉG O. ANWAR2

Affiliation:

1. Department of Mathematics, Indian Institute of Technology Ropar, Punjab-140001, India

2. Aerospace Engineering, Department of Engineering and Mathematics, Sheffield Hallam University, Sheffield, S1 1WB, UK, England, UK

Abstract

This article studies the hydromagnetic peristaltic flow of couple stress fluids through the gap between two concentric channels containing a Darcian porous medium, with the inner channel being rigid. A sinusoidal wave propagates along the outer channel. Long wavelength and low Reynolds number assumptions are used. The effects of couple stress parameter, magnetic field, permeability, and the channel ratio width on pressure and frictional forces on the inner and outer channels are depicted graphically. Mechanical efficiency and trapping are also studied. Pressure diminishes with increasing coupling and permeability parameters whereas it increases with Hartmann number and channel width ratio. Applications of the model include transport of complex bio-waste fluids and magnetic field control of gastro-intestinal disorders.

Publisher

World Scientific Pub Co Pte Lt

Subject

Biomedical Engineering

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