Unsteady flow of hybrid nanofluid with magnetohydrodynamics-radiation-natural convection effects in a u-shaped wavy porous cavity

Khashi’ie, Najiyah Safwa and Armaghani, Taher and Kolsi, Lioua and Rashad, Ahmed Muhammed and Mansour, Muhammed Ahmed and Salah, Taha and Eladeb, Aboulbaba (2024) Unsteady flow of hybrid nanofluid with magnetohydrodynamics-radiation-natural convection effects in a u-shaped wavy porous cavity. CMES - Computer Modeling in Engineering and Sciences, 141 (3). pp. 2225-2251. ISSN 1526-1492

Text 02208061220241030241326.pdf Available under License Creative Commons Attribution. Download (3MB)

Abstract

In this paper, the unsteady magnetohydrodynamic (MHD)-radiation-natural convection of a hybrid nanofluid within a U-shaped wavy porous cavity is investigated. This problem has relevant applications in optimizing thermal management systems in electronic devices, solar energy collectors, and other industrial applications where efficient heat transfer is very important. The study is based on the application of a numerical approach using the Finite Difference Method (FDM) for the resolution of the governing equations, which incorporates the Rosseland approximation for thermal radiation and the Darcy-Brinkman-Forchheimer model for porous media. It was found that the increase of Hartmann number (Ha) causes a reduction of the average Nusselt number (Nu), with a maximum decrease of 25% observed as Ha increases from 0 to 50. In addition, the influence of the wall’s wave amplitude and the heat source length on the heat transfer rate was quantified, and it was revealed that at high wave amplitude, the average Nu increases by up to 15%. These findings suggest that manipulating magnetic field strength and cavity geometry can significantly enhance thermal performance. The novelty of this is related to the exploration of a U-shaped wavy cavity, which is not covered in previous studies, and to the detailed examination of the combined effects of magnetic fields, radiation, and hybrid nanofluids.

Item Type:	Article
Uncontrolled Keywords:	Thermal radiation, Wavy wall, MHD natural convection, Hybrid-nanofluid, Porous medium
Divisions:	Faculty Of Mechanical Technology And Engineering
Depositing User:	Norfaradilla Idayu Ab. Ghafar
Date Deposited:	30 Dec 2025 03:38
Last Modified:	30 Dec 2025 03:38
URI:	http://eprints.utem.edu.my/id/eprint/29327
Statistic Details:	View Download Statistic

Actions (login required)

View Item