Nano Archive

Numerical investigation of Al2O3/water nanofluid laminar convective heat transfer through triangular ducts

Zeinali Heris, Saeed and Noie, Seyyed Hossein and Talaii, Elham and Sargolzaei, Javad (2011) Numerical investigation of Al2O3/water nanofluid laminar convective heat transfer through triangular ducts. Nanoscale Research Letters, 6 (1). pp. 1-10.

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Official URL: http://www.nanoscalereslett.com/content/6/1/179

Abstract

In this article, laminar flow-forced convective heat transfer of Al2O3/water nanofluid in a triangular duct under constant wall temperature condition is investigated numerically. In this investigation, the effects of parameters, such as nanoparticles diameter, concentration, and Reynolds number on the enhancement of nanofluids heat transfer is studied. Besides, the comparison between nanofluid and pure fluid heat transfer is achieved in this article. Sometimes, because of pressure drop limitations, the need for non-circular ducts arises in many heat transfer applications. The low heat transfer rate of non-circular ducts is one the limitations of these systems, and utilization of nanofluid instead of pure fluid because of its potential to increase heat transfer of system can compensate this problem. In this article, for considering the presence of nanoparticles, the dispersion model is used. Numerical results represent an enhancement of heat transfer of fluid associated with changing to the suspension of nanometer-sized particles in the triangular duct. The results of the present model indicate that the nanofluid Nusselt number increases with increasing concentration of nanoparticles and decreasing diameter. Also, the enhancement of the fluid heat transfer becomes better at high Re in laminar flow with the addition of nanoparticles.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:10971
Deposited By:JNCASR
Deposited On:16 Jul 2011 05:23
Last Modified:16 Jul 2011 05:23

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