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Radiative hybrid nanofluid flow past a rotating permeable stretching/shrinking sheet

Nur Syazana Anuar (Department of Mathematics, Universiti Putra Malaysia, Selangor, Malaysia)
Norfifah Bachok (Department of Mathematics and Institute for Mathematical Research, Universiti Putra Malaysia, Selangor, 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: 1 July 2020

Issue publication date: 10 March 2021

138

Abstract

Purpose

This paper aims to discuss a stability analysis on Cu-Al2O3/water nanofluid having a radiation and suction impacts over a rotating stretching/shrinking sheet.

Design/methodology/approach

The partial differential equations are converted into nonlinear ordinary differential equations using similarity transformation and then being solved numerically using built in function in Matlab software (bvp4c). The effects of pertinent parameters on the temperature and velocity profiles together with local Nusselt number and skin friction are reported.

Findings

Compared to previously published studies, the current work is noticed to be in good deal. The analysis further shows that the non-unique solutions exist for certain shrinking parameter values. Hence, a stability analysis is executed using a linear temporal stability analysis and concluded that the second solution is unstable, while the first solution is stable. The effect of suction parameter is observed to be significant in obtaining the solutions. The improvement of the local skin friction and the decrease of the local Nusselt number on the shrinking surface are observed with the increment of the copper nanoparticle volume fractions.

Originality/value

The originality of current work is the numerical solutions and stability analysis of hybrid nanofluid in rotating flow. This work has also resulted in producing the non-unique solutions for the shrinking sheet, and a stability analysis has also been executed for this flow showing that the second solution is unstable, while the first solution is stable. This paper is therefore valuable for engineers and scientist to get acquainted with the properties of the flow, its behavior and the way to predict it. The authors admit that all the findings are original and were not published anywhere else.

Keywords

Acknowledgements

This study was supported by the Fundamental Research Grant Scheme (Ref. No. FRGS/1/2018/STG06/UPM/02/4) awarded by the Ministry of Higher Education Malaysia and MyBrainSc. The authors wish to express their very sincere thanks to the reviewer for the valuable comments and suggestions.

Citation

Anuar, N.S., Bachok, N. and Pop, I. (2021), "Radiative hybrid nanofluid flow past a rotating permeable stretching/shrinking sheet", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 31 No. 3, pp. 914-932. https://doi.org/10.1108/HFF-03-2020-0149

Publisher

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Emerald Publishing Limited

Copyright © 2020, Emerald Publishing Limited

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