This paper is to investigate flow and convective heat transfer characteristics of nanofluids with various shapes of Al2O3 nanoparticles flowing through a uniformly heated circular tube under fully developed laminar flow regime. For the purpose, Al2O3 nanofluids of 0.3 Vol.% with sphere, rod, platelet, blade and brick shapes are manufactured by a two-step method. Zeta potential as well as TEM image is experimentally obtained to examine suspension and dispersion characteristics of Al2O3 nanofluids with various shapes. To investigate flow characteristics, the pressure drop of Al2O3 nanofluids with various shapes are measured. In order to investigate convective heat transfer characteristics, the effective thermal conductivities of Al2O3 nanofluids with various shapes, the temperature distribution at the tube surface and the mean temperature of nanofluids at the inlet are measured, respectively. Based on the experimental results, the convective heat transfer coefficient of Al2O3 nanofluids with various shapes is compared with that of pure water and the thermal conductivity of Al2O3 nanofluids with various shapes. Thus, the effect of nanoparticles shape on the flow and convective heat transfer characteristics flowing through a uniformly heated circular tube under fully developed laminar flow regime is experimentally investigated.
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ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer
December 18–21, 2009
Shanghai, China
Conference Sponsors:
- Nanotechnology Institute
ISBN:
978-0-7918-4389-5
PROCEEDINGS PAPER
Flow and Convective Heat Transfer Characteristics of Nanofluids With Various Shapes of Alumina Nanoparticles
Kyo Sik Hwang,
Kyo Sik Hwang
Korea Aerospace University, Goyang, Gyeonggi, Korea
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Hyo Jun Ha,
Hyo Jun Ha
Korea Aerospace University, Goyang, Gyeonggi, Korea
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Seung Hyun Lee,
Seung Hyun Lee
Korea Aerospace University, Goyang, Gyeonggi, Korea
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Hyun Jin Kim,
Hyun Jin Kim
Korea Aerospace University, Goyang, Gyeonggi, Korea
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Seok Pil Jang,
Seok Pil Jang
Korea Aerospace University, Goyang, Gyeonggi, Korea
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Hyung Mi Lim,
Hyung Mi Lim
Korea Institute of Ceramic Engineering & Technology, Seoul, Korea
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Stephen U. S. Choi
Stephen U. S. Choi
University of Illinois at Chicago, Chicago, IL
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Kyo Sik Hwang
Korea Aerospace University, Goyang, Gyeonggi, Korea
Hyo Jun Ha
Korea Aerospace University, Goyang, Gyeonggi, Korea
Seung Hyun Lee
Korea Aerospace University, Goyang, Gyeonggi, Korea
Hyun Jin Kim
Korea Aerospace University, Goyang, Gyeonggi, Korea
Seok Pil Jang
Korea Aerospace University, Goyang, Gyeonggi, Korea
Hyung Mi Lim
Korea Institute of Ceramic Engineering & Technology, Seoul, Korea
Stephen U. S. Choi
University of Illinois at Chicago, Chicago, IL
Paper No:
MNHMT2009-18173, pp. 455-460; 6 pages
Published Online:
October 26, 2010
Citation
Hwang, KS, Ha, HJ, Lee, SH, Kim, HJ, Jang, SP, Lim, HM, & Choi, SUS. "Flow and Convective Heat Transfer Characteristics of Nanofluids With Various Shapes of Alumina Nanoparticles." Proceedings of the ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer. ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 1. Shanghai, China. December 18–21, 2009. pp. 455-460. ASME. https://doi.org/10.1115/MNHMT2009-18173
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