Effect of fin thickness on mixed convection of hybrid nanofluid exposed to magnetic field-Enhancement of heat sink efficiency

Case Studies in Thermal Engineering

卷:26

Ebrahem A. Algehyne¹  M.A. El-Shorbagy²  Muhammad Ibrahim³  Rasool Kalbasi⁴  Vakkar Ali⁵ 

[1] Department of Basic Engineering Science, Faculty of Engineering, Menoufia University, Shebin El-Kom, 32511, Egypt;

[2] Department of Mathematics, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj, 11942, Saudi Arabia;

[3] Department of Mathematics, Faculty of Science, University of Tabuk, P.O.Box741, Tabuk, 71491, Saudi Arabia;

[4] Department of Mechanical and Industrial Engineering, College of Engineering, Majmaah University, Al-Majmaah, 11952, Saudi Arabia;

[5] School of Mathematics and Physics, University of Science and Technology Beijing, Beijing, 100083, China;

关键词: Hybrid nanofluid;    Heat sink;    Mix convection;    Entropy generation;   

DOI  :  

来源: DOAJ

【 摘 要 】

The present study numerically simulates the mixed convection of the hybrid nanofluid (HNFs) of Al2O3/CuO–H2O on a simple heat sink (HS). The (HNFs) flow passes on an isothermal HS. The NF flow was treated as a slip flow on the upper wall. A uniform magnetic field influences the NF flow. The control volume method was employed with SIMPLE algorithm to solve the algebraic equations. For this purpose, the thickness of fins was changed between 0.1 and 0.3, studying four layouts for fins with different thicknesses. The results indicated that dispersing 3% volume fraction of hybrid nanoparticles (NPs) at a 1:1 ratio to the water enhanced heat transfer and entropy generation (Sgen) by 2.78% and 6.59%, respectively. Compared to Al2O3 NPs, dispersing CuO NPs was approved that has a larger effect on heat transfer improvement. A change in the fin thickness or layout at different Richardson numbers (Ri) triggered different behavior in isotherms and Sgen.

【 授权许可】

Unknown