AUTHOR=Khetib Yacine , Abo-Dief Hala M. , Alanazi Abdullah K. , Cheraghian Goshtasp , Sajadi S. Mohammad , Sharifpur Mohsen 

TITLE=Simulation of Nanofluid Flow in a Micro-Heat Sink With Corrugated Walls Considering the Effect of Nanoparticle Diameter on Heat Sink Efficiency

JOURNAL=Frontiers in Energy Research

VOLUME=Volume 9 - 2021

YEAR=2021

URL=https://www.frontiersin.org/journals/energy-research/articles/10.3389/fenrg.2021.769374

DOI=10.3389/fenrg.2021.769374

ISSN=2296-598X

ABSTRACT=In this numerical work, the cooling performance of water-Al2O3 nanofluid (NF) in a novel microchannel heat sink with wavy walls (WMH-S) is investigated. The focus of this paper is on the effect of NP diameter on heat sink cooling efficiency. The heat sink has 4 inlets and 4 outlets and receives a constant heat flux from the bottom. CATIA and CAMSOL software were used to design the model and simulate NF flow and heat transfer, respectively. The effects of Reynolds number (Re) and volume percentage of nanoparticles (Fi) on the outcomes are investigated. One of the most significant results of this work was the reduction in the maximum and average temperatures of the H-S by increasing both the Re and Fi. In addition, the lowest T_max and pumping power belong to the state of low NP diameter and higher Fi. Furthermore, the highest Figure of Merit (FOM) was approximately 1.25, which occurred at Re=1800 and Fi=5%. Eventually, it was revealed that the best performance of the WMH-S belongs to the case of Re=807.87, volume percentage of 0.0437% and NP diameter of 20 nm.