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Entropy generation in radiative flow of Ree-Eyring fluid due to due rotating disks

Muhammad Ijaz Khan (Department of Mathematics, Quaid-i-Azam University, Islamabad, Pakistan)
Sohail Ahmad Khan (Department of Mathematics, Quaid-i-Azam University, Islamabad, Pakistan)
Tasawar Hayat (Quaid-i-Azam University, Islamabad, Pakistan and Nonlinear Analysis and Applied Mathematics (NAAM) Research Group, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia)
Muhammad Faisal Javed (Department of Civil Engineering, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, Pakistan)
Ahmed Alsaedi (Nonlinear Analysis and Applied Mathematics (NAAM) Research Group, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia)

International Journal of Numerical Methods for Heat & Fluid Flow

ISSN: 0961-5539

Article publication date: 3 May 2019

Issue publication date: 11 June 2019

77

Abstract

Purpose

This study aims to examine the flow characteristics of Ree–Eyring fluid between two rotating disks. The characteristics of heat transfer are discussed in presence of viscous dissipation, heat source/sink and nonlinear radiative heat flux.

Design/methodology/approach

Nonlinear flow expressions lead to ordinary ones through adequate similarity transformations. The ordinary differential system has been tackled through optimal homotopic method. The impact of different flow variables on the velocity field, entropy generation rate and temperature fields is graphically discussed. The surface drag force and heat transfer rate are numerically examined via various pertinent parameters.

Findings

By minimization of values of stretching parameter and Brinkman number, the entropy generation rate can be controlled. The entropy generation rate enhances for higher values of magnetic parameter, while the Bejan number is decreased via magnetic parameter.

Originality/value

No such work is yet published in the literature.

Keywords

Citation

Khan, M.I., Ahmad Khan, S., Hayat, T., Faisal Javed, M. and Alsaedi, A. (2019), "Entropy generation in radiative flow of Ree-Eyring fluid due to due rotating disks", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 29 No. 6, pp. 2057-2079. https://doi.org/10.1108/HFF-11-2018-0642

Publisher

:

Emerald Publishing Limited

Copyright © 2019, Emerald Publishing Limited

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