MHD Flow of a Hybrid Nano-Fluid in a Triangular Enclosure with Zigzags and an Elliptic Obstacle

Ines Chabani; Fateh Mebarek-Oudina; Abdel Aziz I Ismail

doi:10.3390/mi13020224

MHD Flow of a Hybrid Nano-Fluid in a Triangular Enclosure with Zigzags and an Elliptic Obstacle

Micromachines (Basel). 2022 Jan 29;13(2):224. doi: 10.3390/mi13020224.

Authors

Ines Chabani¹, Fateh Mebarek-Oudina¹, Abdel Aziz I Ismail^{2

3}

Affiliations

¹ Department of Physics, Faculty of Sciences, University of 20 Août 1955-Skikda, 21000 Skikda, Algeria.
² Mechanical Engineering Department, College of Engineering and Islamic Architecture, Umm Al-Qura University, Makkah P.O. Box 5555, Saudi Arabia.
³ Mathematics Department, Faculty of Science, Tanta University, Tanta P.O. Box 31527, Egypt.

Abstract

The current study uses the multi-physics COMSOL software and the Darcy-Brinkman-Forchheimer model with a porosity of ε = 0.4 to conduct a numerical study on heat transfer by Cu-TiO₂/EG hybrid nano-fluid inside a porous annulus between a zigzagged triangle and different cylinders and under the influence of an inclined magnetic field. The effect of numerous factors is detailed, including Rayleigh number (103 ≤ Ra ≤ 106), Hartmann number (0 ≤ Ha ≤ 100), volume percent of the nano-fluid (0.02 ≤ ϕ ≤ 0.08), and the rotating speed of the cylinder (-4000 ≤ w ≤ 4000). Except for the Hartmann number, which decelerates the flow rate, each of these parameters has a positive impact on the thermal transmission rate.

Keywords: convective flow; hybrid nano-fluid; magnetic field; triangular cavity.