Stability analysis of unsteady mixed convection flow near the stagnation point with buoyancy effect

Nazar, Roslinda and Zainal, Nurul Amira and Naganthran, Kohilavani (2023) Stability analysis of unsteady mixed convection flow near the stagnation point with buoyancy effect. CFD Letters, 15 (5). pp. 54-64. ISSN 2180-1363

Text 022842203202347.pdf Restricted to Registered users only Download (1MB)

Abstract

This numerical study investigates the behaviour of the unsteady mixed convection flow and heat transfer near the stagnation region past a vertical plate in Al2O3-Cu/H2O hybrid nanofluids. By choosing an appropriate similarity transformation, an ordinary differential equations system is obtained, hence scrutinized via the bvp4c package embedded in the MATLAB program. The results show that as the nanoparticle volume fraction and unsteadiness parameter increase, the fluid's skin friction coefficient also increases. Also, an increase in the nanoparticle volume fraction and unsteadiness parameter has broadened the range of solutions hence, delayed the progress of boundary layer separation. In addition, the presence of the unsteadiness parameter provides a significant result in the thermal system. The first solution is declared stable by the stability analysis.

Item Type:	Article
Uncontrolled Keywords:	Unsteady flow, Mixed convection, Hybrid nanofluids, Stability analysis
Divisions:	Faculty of Mechanical and Manufacturing Engineering Technology
Depositing User:	Norfaradilla Idayu Ab. Ghafar
Date Deposited:	06 Jan 2025 10:56
Last Modified:	06 Jan 2025 10:56
URI:	http://eprints.utem.edu.my/id/eprint/28127
Statistic Details:	View Download Statistic

Actions (login required)

View Item