Multiple Impinging Jet Cooling of a Wavy Surface by Using Double Porous Fins under Non-Uniform Magnetic Field

Abstract

Coupled effects of double porous fins and inhomogeneous magnetic field on the cooling performance of multiple nanojet impingement for a corrugated surface were numerically analyzed. Different values of magnetic field parameters (strength, inclination, and amplitude of spatially varying part) and double porous fin parameters (inclination and permeability) were used, while finite element method is used as the solution method. When parametric computational fluid dynamics (CFD) simulations were performed, there were 162.5% and 34% Nusselt number (Nu) enhancement with magnetic field for flat and wavy surfaces, respectively. The variations of average Nu became 36% and 24% when varying the inclination and amplitude of inhomogeneous magnetic for a flat surface, while the amounts were 43.7% and 32% for a corrugated one. The vortex distribution in between the jets and cooling performance was affected by the variation of double porous fin permeability and inclination. An optimization method was used for the highest cooling performance, while the optimum set of parameters was obtained at (Ha, Amp, Da, Ω) = (0.224, 0.5835, 7.59×10−4, 0.1617). By using the double porous fins and inhomogeneous magnetic field, excellent control of the cooling performance of multiple impinging jet was obtained.

Entropy generation minimization of hybrid nanofluid mixed convection flow in lid-driven square enclosure with heat-generating porous layer on inner walls

“…Aich et al (2023) studied the combined effect of heat generation and chemical reaction in viscoplastic nanofluid (Casson nanofluid) flow in a non-uniform channel with porous walls. Cooling of a wavy surface under the combined use of a non-uniform magnetic field and two porous fins was investigated by Kolsi et al (2022). Ag-MgO/water hybrid nanofluid was used as the fluid.…”

Thermal enhancement of nano-fluidic transport confined between disk and cone both rotating with distinct angular velocities and heat transfer

“…Since then, researchers, scientist and engineers are studying and incorporating nanofluids in numerous industrial procedures. Some recent findings on nanofluids and their applications are cited (Akbar et al , 2014; Amirsom et al , 2019; Kousar et al , 2022; Uddin et al , 2023; Maraj et al , 2018; Selimefendigil et al , 2021; Iqbal et al , 2021; Selimefendigil and Chamkha, 2019; Kolsi et al , 2023; Selimefendigil et al , 2023; Iqbal et al , 2017; Kolsi et al , 2023; Bég et al , 2020; Latiff et al , 2016; Gul et al , 2021) and many therein.…”