Vortex generation due to multiple localized magnetic fields in the hybrid nanofluid flow - A numerical investigation.

Autor: Ahmad S; Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan, 430074, China.; Department of Basic Sciences and Humanities, Muhammad Nawaz Sharif University of Engineering and Technology, Multan, 60000, Pakistan., Ali K; Department of Basic Sciences and Humanities, Muhammad Nawaz Sharif University of Engineering and Technology, Multan, 60000, Pakistan., Katbar NM; Mehran UET Shaheed Zulfiqar Ali Bhutto Campus, Khairpur, Pakistan.; School of Mathematics and Statistics, Central South University, Changsha, 410083, China., Akhtar Y; College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310030, China., Cai J; Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan, 430074, China., Jamshed W; Department of Mathematics, Capital University of Science and Technology (CUST), Islamabad, 44000, Pakistan., El Din SM; Center of Research, Faculty of Engineering, Future University in Egypt, New Cairo, 11835, Egypt., Abd-Elmonem A; Department of Mathematics, College of Science, King Khalid University, Abha, Saudi Arabia., Elmki Abdalla NS; Department of Mathematics, College of Science, King Khalid University, Abha, Saudi Arabia.
Jazyk: angličtina
Zdroj: Heliyon [Heliyon] 2023 Jul 04; Vol. 9 (7), pp. e17756. Date of Electronic Publication: 2023 Jul 04 (Print Publication: 2023).
DOI: 10.1016/j.heliyon.2023.e17756
Abstrakt: Vortices capture the attention of every scientist (as soon as they come into existence) while studying any flow problem because of their significance in comprehending fluid mixing and mass transport processes. A vortex is indeed a physical phenomenon that happens when a liquid or a gas flow in a circular motion. They are generated due to the velocity difference and may be seen in hurricanes, air moving across the plane wing, tornadoes, etc. The study of vortices is important for understanding various natural phenomena in different settings. This work explores the complex dynamics of the Lorentz force that drives the rotation of nanostructures and the emergence of intricate vortex patterns in a hybrid fluid with Fe 3 O 4 -Cu nanoparticles. The hybrid nanofluid is modeled as a single-phase fluid, and the partial differential equations (PDEs) that govern its behavior are solved numerically. This work also introduces a novel analysis that enables us to visualize the flow lines and isotherms around the magnetic strips in the flow domain. The Lorentz force confined to the strips causes the spinning of hybrid nanoparticles, resulting in complex vortex structures in the flow domain. The results indicate that the magnetic field lowers the Nusselt number by 34% while raising the skin friction by 9%. The Reynolds number amplifies the influence of the localized magnetic field on the flow dynamics. Lastly, the nano-scaled structures in the flow enhance the Nusselt number significantly while having a minor effect on the skin friction factor.
Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(© 2023 The Authors.)
Databáze: MEDLINE
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