THERMAL SCIENCE

International Scientific Journal

Muhammad Solleh Asmadi

,

Zailan Bin Siri

,

Ruhaila Md Kasmani

,

Habibis Saleh

NANOPARTICLE SHAPE EFFECT ON THE NATURAL-CONVECTION HEAT TRANSFER OF HYBRID NANOFLUID INSIDE A U-SHAPED ENCLOSURE

ABSTRACT
The effect of nanoparticle shape on the natural-convection heat transfer of Cu-Al2O3-water hybrid nanofluid inside a U-shaped enclosure is presented in this paper. The governing equations are transformed into the dimensionless form using dimensionless variables. A three-node triangular finite element method is used with the Newton-Raphson method to solve the problem numerically. The streamlines and isotherms as well as the local and average Nusselt numbers are presented for the fluid-flow with Rayleigh number of 104 to 106. It is found that blade nanoparticle shape produces the highest heat transfer rate while sphere is the lowest.
KEYWORDS
natural convection, heat transfer, hybrid nanofluid, U-shaped enclosure, Nanoparticle shape
PAPER SUBMITTED: 2020-08-18
PAPER REVISED: 2020-10-19
PAPER ACCEPTED: 2021-01-09
PUBLISHED ONLINE: 2021-04-10
DOI REFERENCE: https://doi.org/10.2298/TSCI200818139A
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2022, VOLUME 26, ISSUE Issue 1, PAGES [463 - 475]
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Nanoparticle shape effect on the natural-convection heat transfer of hybrid nanofluid inside a U-shaped enclosure

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence