Stability analysis of unsteady hybrid nanofluid flow past a permeable stretching/shrinking cylinder

Zainal, Nurul Amira and Nazar, Roslinda and Naganthran, Kohilavani and Pop, Ioan (2021) Stability analysis of unsteady hybrid nanofluid flow past a permeable stretching/shrinking cylinder. Journal Of Advanced Research In Fluid Mechanics And Thermal Sciences, 86 (1). pp. 64-75. ISSN 2289-7879

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STABILITY ANALYSIS OF UNSTEADY HYBRID NANOFLUID FLOW PAST A PERMEABLE STRETCHINGSHRINKING CYLINDER.PDF
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Abstract

The study of boundary layer flow has gained considerable interest owing to its extensive engineering applications. Thus, this numerical study aims to develop a mathematical hybrid nanofluid model and perform a stability analysis of unsteady flow in the hybrid Al2O3-Cu/H2O nanofluid past a permeable stretching/shrinking cylinder. The partial differential equations are converted into a system of nonlinear ordinary differential equations by selecting suitable similarity transformation and solved using the bvp4c code in the MATLAB program. The findings revealed that the existence of dual solutions is visible and successfully disclosed the fluid flow separation points. The skin friction coefficient and the local Nusselt numbers of Al2O3-Cu/H2O increase with the inclusion of the suction parameter, which consequently boosts the heat transfer efficiency. The coefficient of skin friction over the permeable stretching/shrinking cylinder is reduced when the unsteadiness parameter is diminished. In addition, the presence of the unsteadiness parameter actively promotes heat transfer degradation on the permeable stretching/shrinking cylinder. Stability analysis indicates that a stable and physically realizable solution appeared in the first solution, whereas the second solution is unstable.

Item Type: Article
Uncontrolled Keywords: Dual solutions, Hybrid nanofluid, Stability analysis, Stretching/shrinking cylinder, Unsteady flow
Divisions: Faculty of Mechanical and Manufacturing Engineering Technology
Depositing User: Sabariah Ismail
Date Deposited: 14 Apr 2022 15:59
Last Modified: 14 Apr 2022 15:59
URI: http://eprints.utem.edu.my/id/eprint/25882
Statistic Details: View Download Statistic

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