Thermodynamics analysis of variable viscosity hydromagnetic Couette flow in a rotating system with Hall effects
Date
2015-11-20
Journal Title
Journal ISSN
Volume Title
Publisher
MDPI
Abstract
In this paper, we employed both first and second laws of thermodynamics to
analyze the flow and thermal decomposition in a variable viscosity Couette flow of a
conducting fluid in a rotating system under the combined influence of magnetic field and
Hall current. The non-linear governing differential equations are obtained and solved
numerically using shooting method coupled with fourth order Runge–Kutta–Fehlberg
integration technique. Numerical results obtained for velocities and temperature profiles
are utilized to determine the entropy generation rate, skin fictions, Nusselt number and the
Bejan number. By plotting the graphs of various values of thermophysical parameters, the
features of the flow characteristics are analyzed in detail. It is found that fluid rotation
increases the dominant effect of heat transfer irreversibility at the upper moving plate
region while the entropy production is more at the lower fixed plate region.
Description
CITATION: Makinde, O. D., Eegunjobi, A. S. & Tshehla, M. S. 2015. Thermodynamics analysis of variable viscosity hydromagnetic Couette flow in a rotating system with Hall effects. Entropy, 17(11):7811-7826, doi:10.3390/e17117811.
The original publication is available at http://www.mdpi.com/journal/entropy
The original publication is available at http://www.mdpi.com/journal/entropy
Keywords
Hydromagnetic Couette flow, Rotating motion, Viscosity, Hall effects, Entropy analysis, Magnetohydrodynamic instabilities, Heat -- Transfer
Citation
Makinde, O. D., Eegunjobi, A. S. & Tshehla, M. S. 2015. Thermodynamics analysis of variable viscosity hydromagnetic Couette flow in a rotating system with Hall effects. Entropy, 17(11):7811-7826, doi:10.3390/e17117811.