Numerical simulation of natural convection and mixed convection of the nanofluid in a square cavity using Buongiorno model

Garoosi, Faroogh, Garoosi, Saba and Hooman, Kamel (2014) Numerical simulation of natural convection and mixed convection of the nanofluid in a square cavity using Buongiorno model. Powder Technology, 268 1: 279-292. doi:10.1016/j.powtec.2014.08.006


Author Garoosi, Faroogh
Garoosi, Saba
Hooman, Kamel
Title Numerical simulation of natural convection and mixed convection of the nanofluid in a square cavity using Buongiorno model
Journal name Powder Technology   Check publisher's open access policy
ISSN 1873-328X
0032-5910
Publication date 2014-12-01
Sub-type Article (original research)
DOI 10.1016/j.powtec.2014.08.006
Open Access Status
Volume 268
Issue 1
Start page 279
End page 292
Total pages 14
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2015
Language eng
Abstract A numerical study is carried out concerning natural and mixed convection heat transfer of nanofluid (Al2O3- water) in a laterally-heated square cavity. Two-dimensional continuity, Navier-Stokes, energy and volume fraction equations are solved using finite volume method. The effects of various design parameters such as Rayleigh number (102≤Ra≤107), volume fraction (0≤ϕ≤ 0.05), size of nanoparticles (25nm≤dp≤145 nm), Richardson number (0.01≤Ri≤ 1000) and Grashof number (102≤Gr≤104) on the heat transfer rate and distribution of nanoparticles for both natural and mixed convection cases are investigated. The simulation results indicate that there is an optimal volume fraction of the nanoparticles at each Rayleigh and Richardson number for which the maximum heat transfer rate can be obtained. It is also observed that at low Rayleigh numbers and high Richardson numbers, the particle distribution is fairly non-uniform while at high Ra and low Ri values particle distribution remains almost uniform for free and mixed convection cases, respectively.
Keyword Buongiorno model
Mixed convection
Nanofluid
Natural convection
Thermophoresis
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2015 Collection
 
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