THERMAL SCIENCE

International Scientific Journal

Mohammad Sadegh Valipour

,

Reza Masoodi

,

Saman Rashidi

,

Masoud Bovand

,

Mojtaba Mirhosseini

A NUMERICAL STUDY ON CONVECTION AROUND A SQUARE CYLINDER USING AL2O3-H2O NANOFLUID

ABSTRACT
In this paper, a numerical simulation has been performed to study the fluid flow and heat transfer around a square cylinder utilizing Al2O3-H2O nanofluid over low Reynolds numbers. Here, both Reynolds and Peclet numbers are varied within the range of 1 to 40and the volume fraction of nanoparticles (φ) is varied within the range of 0<φ<0.05. Two-dimensional and steady mass continuity, momentum and energy equations have been discretized using Finite Volume Method (FVM). SIMPLE algorithm has been applied for solving the pressure linked equations. The effect of volume fraction of nanoparticles on fluid flow and heat transfer were investigated numerically. It was found that at a given Reynolds number, the Nusselt number, drag coefficient, recirculation length, and pressure coefficient increases by increasing the volume fraction of nanoparticles.
KEYWORDS
nanofluids, finite volume, square cylinder, Reynolds number, volume fraction
PAPER SUBMITTED: 2012-12-24
PAPER REVISED: 2013-04-10
PAPER ACCEPTED: 2013-05-16
PUBLISHED ONLINE: 2013-06-01
DOI REFERENCE: https://doi.org/10.2298/TSCI121224061V
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2014, VOLUME 18, ISSUE Issue 4, PAGES [1305 - 1314]
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A numerical study on convection around a square cylinder using Al2O3-H2O nanofluid

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