Investigation of Transient MHD Couette flow and Heat Transfer of Dusty Fluid with Temperature-Dependent Oroperties

Authors

1 Young Researchers and Elite Club, Najafabad Branch, Islamic Azad University, Najafabad, Iran

2 Esfarayen University of Technology, Esfarayen, North Khorasan, Iran

3 po box484, Shariati Avn., Babol, Iran

4 Universiy of Isfahan, Iran

5 Manufacturing System Integration (MSI), Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia

Abstract

In the present study, transient MHD Couette flow and heat transfer of dusty fluid between two parallel plates and the effect of the temperature dependent properties has been investigated. The thermal conductivity and viscosity of the fluid are assumed as linear and exponential functions of temperature, respectively. A constant pressure gradient and an external uniform magnetic field are considered in the main flow direction and perpendicular to the plates, respectively. A hybrid treatment based on finite difference method (FDM) and differential transform method (DTM) is used to solve the coupled flow and heat transfer equations. The effects of the variable properties, Hartman number, Hall current, Reynolds number and suction velocity on the Nusselt number and skin friction factor have been discussed. It is found that when Hartman number increases, skin friction of the upper and lower plates increases.

Keywords

Journal of Applied Fluid Mechanics
Volume 8, Issue 4
September 2015
Pages 921-929

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