Investigating the effects of employing a cooling radiator on MHD natural convection by injecting MWCNTs into water

Abstract
One of the best methods in thermal engineering for cooling a liquid is to use a radiator. Using the radiator mechanism in free convection systems is a successful and first idea to improve performance of natural convection systems, which have various applications in building, energy storage, and cooling systems. Therefore, a radiator with four constant temperature fins on each side was used to contribute to cool a hot plate in this study. The mechanism of this system was free convection of water with Multi-walled carbon nanotubes (MWCNTs), and a complex relationship was used for thermal conductivity nanofluid, respecting the thermal conductivity of MWCNT in radial and longitude directions. A deviated magnetic field also created a Lorentz force on the moving fluid to control natural convection mechanism. This system was modeled using the finite volume method to study the influences of Rayleigh number, volume fraction, and Hartmann number on the flow and heat transfer parameters. Evidences showed that injecting 3% volume fraction of MWCNT in Rayleigh numbers of \r\n escalated the mean Nusselt number by 48% in all of the Hartmann numbers.

Author
Hawzhen Fateh M. Ameen

DOI
https://doi.org/10.1016/j.asej.2023.102216

Publisher
Ain Shams Engineering Journal

ISSN
n/a

Publish Date: