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

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.

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