In this work, the natural convection heat transfer of Cu-gallium nanofluid in a differentially heated enclosure is investigated. A single-phase model is employed with constant or temperature-dependent properties of the fluid. The results are shown over a wide range of Grashof numbers, volume fractions of nanoparticles, and aspect ratios. The Nusselt number is demonstrated to be sensitive to the aspect ratio. It is found that the Nusselt number is more sensitive to thermal conductivity than viscosity at a low velocity (especially for a low aspect ratio and a low Grashof number), however, it is more sensitive to the viscosity than the thermal conductivity at a high velocity (high aspect ratio and high Grashof number). In addition, the evolution of velocity vectors, isotherms, and Nusselt number for a small aspect ratio is investigated.
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December 2011
This article was originally published in
Journal of Heat Transfer
Research Papers
Natural Convection of Cu-Gallium Nanofluid in Enclosures
Cong Qi,
e-mail: qicongkevin@163.com
Cong Qi
School of Energy Science and Engineering, Harbin Institute of Technology
, Harbin 150001, China
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Yurong He,
e-mail: rong@hit.edu.cn
Yurong He
School of Energy Science and Engineering, Harbin Institute of Technology
, Harbin 150001, China
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Yanwei Hu,
e-mail: hywhit@foxmail.com
Yanwei Hu
School of Energy Science and Engineering, Harbin Institute of Technology
, Harbin 150001, China
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Juancheng Yang,
e-mail: yangjc@hit.edu.cn
Juancheng Yang
School of Energy Science and Engineering, Harbin Institute of Technology
, Harbin 150001, China
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Fengchen Li,
e-mail: lifch@hit.edu.cn
Fengchen Li
School of Energy Science and Engineering, Harbin Institute of Technology
, Harbin 150001, China
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Yulong Ding
e-mail: y.ding@leeds.ac.uk
Yulong Ding
Institute of Particle Science and Engineering, University of Leeds
, Leeds LS2 9JT, United Kingdom
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Cong Qi
School of Energy Science and Engineering, Harbin Institute of Technology
, Harbin 150001, China
e-mail: qicongkevin@163.com
Yurong He
School of Energy Science and Engineering, Harbin Institute of Technology
, Harbin 150001, China
e-mail: rong@hit.edu.cn
Yanwei Hu
School of Energy Science and Engineering, Harbin Institute of Technology
, Harbin 150001, China
e-mail: hywhit@foxmail.com
Juancheng Yang
School of Energy Science and Engineering, Harbin Institute of Technology
, Harbin 150001, China
e-mail: yangjc@hit.edu.cn
Fengchen Li
School of Energy Science and Engineering, Harbin Institute of Technology
, Harbin 150001, China
e-mail: lifch@hit.edu.cn
Yulong Ding
Institute of Particle Science and Engineering, University of Leeds
, Leeds LS2 9JT, United Kingdom
e-mail: y.ding@leeds.ac.uk
J. Heat Transfer. Dec 2011, 133(12): 122504 (8 pages)
Published Online: October 6, 2011
Article history
Received:
November 2, 2010
Revised:
June 10, 2011
Accepted:
June 13, 2011
Online:
October 6, 2011
Published:
October 6, 2011
Citation
Qi, C., He, Y., Hu, Y., Yang, J., Li, F., and Ding, Y. (October 6, 2011). "Natural Convection of Cu-Gallium Nanofluid in Enclosures." ASME. J. Heat Transfer. December 2011; 133(12): 122504. https://doi.org/10.1115/1.4004431
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