Effects of L-shaped fins on cooling an electronic heat sink fitted under magnetic field of CNT–water/ethylene glycol nanoliquid
College of Engineering, Department of Mechanical Engineering, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, Saudi Arabia
2 Laboratory of Ionized Backgrounds and Reagents Studies (EMIR), Preparatory Institute for Engineering Studies of Monastir (IPEIM), University of Monastir, Monastir, Tunisia
3 Higher School of Sciences and Technology of Hammam Sousse (ESSTHS), Department of Physics, University of Sousse, Sousse, Tunisia
Accepted: 7 July 2022
Published online: 21 July 2022
The aim of this research is to investigate numerically the efficiency of employing CNT–water/ethylene glycol nanofluid into an inclined square box heat dissipator featured with L-shaped fins beneath the impact of Lorentz powers, taking into consideration the nanoliquid’s radiative effect. The study is constructed using the Comsol Multiphysics tool. The effects of Rayleigh number ( Ra ), Hartmann number (0 Ha 40), the radiative emitting coefficient (0 2), the length (0.4 L 0.7) and width (0.01 0.07) of L-shaped fins, the heat dissipator box inclination () and the L-shaped fins dispositions are all analyzed as variables that affect the heat waste proficiency. A comparison between classical and L-shaped fins is confirmed. The data reveal that expanding the amount of Rayleigh and also the radiative element enhances convection cooling rate. Whenever radiative emission is maintained, the action of Lorentz strengths on slowing the convection cooling rate is mitigated. Furthermore, heightening both the L-shaped fins length and width enhances more the convection cooling proficiency excluding the L = 0.4 and = 0.07 scenario. Relying on the chamber slant angle, manifold scenarios are unearthed in terms of the excellent L-shaped fins disposition. The L-shaped fins dissipate heat more effectively than classical one.
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