THERMAL SCIENCE

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Sufian Munawar

,

Najma Saleem

THERMAL ANALYSIS OF AN EYRING-POWELL FLUID FLOW-THROUGH A CONSTRICTED CHANNEL

ABSTRACT
This paper is aimed to investigate the entropy generation in a MHD convective flow of Eyring-Powell fluid through a mildly constricted channel. The constriction is assumed to be of regular or irregular shape and is presented inside the channel wall. Mathematical model is developed using the basic laws of conservation of mass, momentum, and energy. The governing equations are normalized using appropriate set of dimensionless variables and solutions are obtained by regular perturbation technique. The solutions are further used to calculate the entropy expression associated with the Second law of thermodynamics. The heat transfer characteristics, like, temperature, isotherms, entropy generation number entropy lines and the Bejan number are analyzed for the variation in magnetic field, shape parameter, and material constants. It is observed that entropy production is maximum in the narrow part of the channel. Moreover, entropy generation rate is higher for the regular parabolic shape as compared to irregular shapes of constriction.
KEYWORDS
entropy generation, magnetic field, Constricted channel, Eyring Powell fluid
PAPER SUBMITTED: 2018-01-25
PAPER REVISED: 2018-09-21
PAPER ACCEPTED: 2018-10-25
PUBLISHED ONLINE: 2018-11-04
DOI REFERENCE: https://doi.org/10.2298/TSCI180125308M
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2020, VOLUME 24, ISSUE Issue 2, PAGES [1207 - 1216]
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Thermal analysis of an Eyring-Powell fluid flow-through a constricted channel

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence