Effects of oscillation on convective thermal flow in a vertical enclosure filled by nanofluid particles

Abstract

In this work, we numerically explore all possible ways to improve heat transmission in a sinusoidal cavity with oxide nanoparticle suspensions in liquid. Engineers aim to improve thermal efficiency in their designs by incorporating an inclined magnetic field into prospective flow configurations. One of the most important advances is the utilization of sinusoidal walls, which significantly improve thermal efficiency. A significant step forward in comprehending thermal management in enclosures filled with nanofluids has been made possible by computational analysis facilitated by finite element analysis. An approximation of the velocity and temperature is provided by the Ladyzhenskaya-Babuska—Brezzi (LBB)-stable element, which is utilized to deliver this information. The accuracy of the computational study has been verified by comparing them to their equivalents in the previous research. It has been demonstrated through the findings that the rate of heat transfer and the kinetic energy are both higher when the volume concentration is lower. Furthermore, in the absence of a magnetic field, the Nusselt number is 7 % higher, and the kinetic energy is 1.89 times bigger for ϕ = 2 % compared to ϕ = 8 % for k = 0.2. Similarly, the KE decreases when there is an increase in the ϕ. Furthermore, a magnetic field has a detrimental effect on their values. As a result, both the fluid flow velocity and the temperature properties decline with increasing Hartmann numbers. These observations play a major role in the development of energy-efficient applications and optimized heat transfer systems, establishing a novel standard for thermal management approaches in real-world engineering scenarios.

Keywords

• Natural convection
• Inclined magnetic field
• Wavy enclosure
• Finite element method