Open AccessStability Analysis of Unsteady Hybrid Nanofluid Flow Past a Permeable Stretching/Shrinking Cylinder
Author(s) -
Nurul Amira Zainal,
Roslinda Mohd. Nazar,
Kohilavani Naganthran,
Ioan Pop
Publication year - 2021
Publication title -
journal of advanced research in fluid mechanics and thermal sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.247
H-Index - 13
ISSN - 2289-7879
DOI - 10.37934/arfmts.86.1.6475
Subject(s) - nanofluid , mechanics , nusselt number , cylinder , suction , ordinary differential equation , flow (mathematics) , matrix similarity , partial differential equation , boundary layer , nonlinear system , materials science , heat transfer , mathematics , thermodynamics , differential equation , physics , mathematical analysis , turbulence , geometry , reynolds number , quantum mechanics
The study of boundary layer flow has gained considerable interest owing to its extensive engineering applications. Thus, this numerical study aims to investigate the stability analysis of unsteady flow in the hybrid Al2O3-Cu/H2O nanofluid past a shrinking permeable cylinder. The impacts of suction and unsteadiness parameters are considered in this study. 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. The skin friction coefficient and the local Nusselt numbers of Al2O3-Cu/H2O increase with the inclusion of the suction parameter. The presence of the unsteadiness parameter actively promotes heat transfer degradation on the shrinking cylinder. Stability analysis indicates that a stable and physically realizable solution appeared in the first solution, whereas the second solution is unstable.