Optimization of natural convection heat transfer of Newtonian nanofluids in a cylindrical enclosure

Hamid Moradi; Bahamin Bazooyar; Ahmad Moheb; Seyed Gholamreza Etemad

doi:10.1016/j.cjche.2015.04.002

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Optimization of natural convection heat transfer of Newtonian nanofluids in a cylindrical enclosure

流体力学与传递现象 | Updated：2026-01-06

- Optimization of natural convection heat transfer of Newtonian nanofluids in a cylindrical enclosure
- Chinese Journal of Chemical Engineering Vol. 23, Issue 8, Pages: 1266-1274(2015)
- Affiliations：
  
  2 Ahvaz Faculty of Petroleum Engineering, Petroleum University of Technology, Ahvaz,.O. Box 619814,P,Iran,4471
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2015.04.002
  CLC：
- Published：2015
- Accepted：
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Hamid Moradi, Bahamin Bazooyar, Ahmad Moheb, Seyed Gholamreza Etemad. Optimization of natural convection heat transfer of Newtonian nanofluids in a cylindrical enclosure[J]. Chin.J.Chem.Eng., 2015, 23(8): 1266-1274.
DOI：

Hamid Moradi, Bahamin Bazooyar, Ahmad Moheb, Seyed Gholamreza Etemad. Optimization of natural convection heat transfer of Newtonian nanofluids in a cylindrical enclosure[J]. Chin.J.Chem.Eng., 2015, 23(8): 1266-1274. DOI： 10.1016/j.cjche.2015.04.002.

摘要

Abstract

This study characterizes and optimizes natural convection heat transfer of two Newtonian Al

and TiO

/water nanofluids in a cylindrical enclosure. Nusselt number (Nu) of nanofluids in relation to Rayleigh number (Ra) for different concentrations of nanofluids is investigated at different configurations and orientations of the enclosure. Results show that adding nanoparticles towater has a negligible or even adverse influence upon natural convection heat transfer of water: only a slight increase in natural convection heat transfer of Al

/water is observed

while natural convection heat transfer for TiO

/water nanofluid is inferior to that for the base fluid. Results also reveal that at low Ra

the likelihood of enhancement in natural convection heat transfer ismore than at high Ra: at low Ra

inclination angle

aspect ratio of the enclosure and nanoparticle concentration influence natural convection heat transfer more pronouncedly than that in high Ra.

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