Using natural convection mechanism of nanofluid for cooling an embedded hot plate in corner of a square enclosure: A numerical simulation
Document Type
Article
Publication Date
5-1-2022
Abstract
Cooling is one of the most important issues for thermal engineers, and the use of simple and inexpensive methods greatly contributes to the efficiency of a thermal system. Also, in recent decades, the development of numerical methods and the advent of computers has led to the emergence of computer simulations. In present numerical study, the natural convection mechanism of nanofluid based on water and titanium oxide (TiO2) were simulated by computational fluid dynamics (CFD) to cool a hot inclined plate inside a square chamber. The considerable innovation in this study is the nanofluids properties depending on temperature, nanoparticle diameter and volume fraction and the cavity is able to incline. The impacts of two Rayleigh numbers (102 < Ra < 104), four volume fractions (0 < phi < 0.06) and four inclined angles (0 < gamma < 45) were analyzed on the average convective heat transfer coefficient. This study briefly demonstrated that the optimum values of volume fraction for Rayleigh numbers 102and 104 were 0.06 and 0.02, respectively. Moreover, increasing the volume fraction to 6% in low Reynolds number improved the average convective heat transfer coefficient by 21%.
Keywords
Natural convection, Nanofluid, Titanium oxide, Cooling system, Thermal engineer
Divisions
sch_ecs
Funders
King Khalid University (R.G.P.2/14/43),Universiti Malaya (GPF054A-2020),Taif University, Taif, Saudi Arabia (TURSP-2020/16)
Publication Title
Case Studies in Thermal Engineering
Volume
33
Publisher
Elsevier
Publisher Location
RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS