Brownian motion of nanoparticles in a triangular enclosure with natural convection

Ghasemi, B. and Aminossadati, S. M. (2010) Brownian motion of nanoparticles in a triangular enclosure with natural convection. International Journal of Thermal Sciences, 49 6: 931-940. doi:10.1016/j.ijthermalsci.2009.12.017


Author Ghasemi, B.
Aminossadati, S. M.
Title Brownian motion of nanoparticles in a triangular enclosure with natural convection
Journal name International Journal of Thermal Sciences   Check publisher's open access policy
ISSN 1290-0729
Publication date 2010-06
Year available 2010
Sub-type Article (original research)
DOI 10.1016/j.ijthermalsci.2009.12.017
Volume 49
Issue 6
Start page 931
End page 940
Total pages 10
Editor D. Gobin
U. Gross
Y. Bayazitoglu
Place of publication Paris, France
Publisher Elsevier Masson
Collection year 2011
Language eng
Abstract This paper presents the results of a numerical study on the natural convection in a right triangular enclosure, with a heat source on its vertical wall and filled with a water-CuO nanofluid. The effects of parameters such as Rayleigh number, solid volume fraction, heat source location, enclosure aspect ratio and Brownian motion on the flow and temperature fields as well as the heat transfer rate, are examined. The results show that when Brownian motion is considered in the analysis, the solid volume fraction, the heat source location and the enclosure aspect ratio affect the heat transfer performance differently at low and high Rayleigh numbers. At high Rayleigh numbers, an optimum value for the solid volume fraction is found which results in the maximum heat transfer rate. This is in contradiction to the results of the analysis in which Brownian motion is neglected. © 2010 Elsevier Masson SAS. All rights reserved.
Keyword Triangular enclosure
Natural convection
Nanofluid
Brownian motion
Solar water-heater
Thermal conductivity
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 2011 Collection
 
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Created: Sun, 06 Jun 2010, 00:05:13 EST