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MHD hybrid nanofluid flow over a permeable stretching/shrinking sheet with thermal radiation effect

Ubaidullah Yashkun (Institute of Engineering Mathematics, Universiti Malaysia Perlis, Arau, Malaysia and Sukkur IBA University, Sukkur, Pakistan)
Khairy Zaimi (Institute of Engineering Mathematics, Universiti Malaysia Perlis, Arau, Malaysia)
Nor Ashikin Abu Bakar (Institute of Engineering Mathematics, Universiti Malaysia Perlis, Arau, Malaysia)
Anuar Ishak (Department of Mathematical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Malaysia)
Ioan Pop (Department of Mathematics, Babes Bolyai University, Cluj Napoca, Romania)

International Journal of Numerical Methods for Heat & Fluid Flow

ISSN: 0961-5539

Article publication date: 3 July 2020

Issue publication date: 10 March 2021

272

Abstract

Purpose

This study aims to investigate the heat transfer characteristic of the magnetohydrodynamic (MHD) hybrid nanofluid over the linear stretching and shrinking surface in the presence of suction and thermal radiation effects.

Design/methodology/approach

Mathematical equations are transformed into pairs of self-similarity equations using similarity transformation. Boundary value problem solver (bvp4c) in MATLAB was adopted to solve the system of reduced similarity equations. In this study, the authors particularly examine the flow and heat transfer properties for different values of suction and thermal radiation parameters using single-phase nanofluid model. A comparison of the present results shows a good agreement with the published results.

Findings

It is noticed that the efficiency of heat transfer of hybrid nanofluid (Cu-Al2O3/H2O) is greater than the nanofluid (Cu/H2O). Furthermore, it is also found that dual solutions exist for a specific range of the stretching/shrinking parameter with different values of suction and radiation parameters. The results indicate that the skin friction coefficient and the local Nusselt number increase with suction effect. The values of the skin friction coefficient increases, but the local Nusselt number decreases for the first solution with the increasing of thermal radiation parameter. It is also observed that suction and thermal radiation widen the range of the stretching/shrinking parameter for which the solution exists.

Practical implications

In practice, the investigation on the flow and heat transfer of MHD hybrid nanofluid through a stretching/shrinking sheet with suction and thermal radiation effects is very important and useful. The problems related to hybrid nanofluid has numerous real-life and industrial applications, for example microfluidics, manufacturing, transportation, military and biomedical, etc.

Originality/value

In specific, this study focused on increasing thermal conductivity using a hybrid nanofluid mathematical model. This paper is able to obtain the dual solutions. To the best of author’s knowledge, this study is new and there is no previous published work similar to present study.

Keywords

Acknowledgements

The authors would like to acknowledge the support from the Fundamental Research Grant Scheme (FRGS) under a grant number of FRGS/1/2018/STG06/UNIMAP/02/3 from the Ministry of Education Malaysia. The authors also wish to express their thanks to the very competent Referee for good comments and suggestions.

This research has been funded by the Fundamental Research Grant Scheme (FRGS) under a grant number of FRGS/1/2018/STG06/UNIMAP/02/3 from the Ministry of Education Malaysia.

Citation

Yashkun, U., Zaimi, K., Abu Bakar, N.A., Ishak, A. and Pop, I. (2021), "MHD hybrid nanofluid flow over a permeable stretching/shrinking sheet with thermal radiation effect", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 31 No. 3, pp. 1014-1031. https://doi.org/10.1108/HFF-02-2020-0083

Publisher

:

Emerald Publishing Limited

Copyright © 2020, Emerald Publishing Limited

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