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

Lioua Kolsi, Fatih Selimefendigil, Kaouther Ghachem, Talal Alqahtani and Salem Algarni
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Lioua Kolsi: Department of Mechanical Engineering, College of Engineering, University of Ha’il, Ha’il City 81451, Saudi Arabia
Fatih Selimefendigil: Department of Mechanical Engineering, Celal Bayar University, Manisa 45140, Turkey
Kaouther Ghachem: Department of Industrial Engineering and Systems, College of Engineering, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
Talal Alqahtani: Mechanical Engineering Department, College of Engineering, King Khalid University, Abha 61413, Saudi Arabia
Salem Algarni: Mechanical Engineering Department, College of Engineering, King Khalid University, Abha 61413, Saudi Arabia

Mathematics, 2022, vol. 10, issue 4, 1-20

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.

Keywords: nonuniform magnetic field; multiple jet impingement; finite element method; double porous fins; optimization; wavy surface (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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