Experimental study on quenching of a small metal sphere in nanofluids
Name
ASME_Boston_Final _8-18-08_IMECE jacopo.pdf
Description
jacopo paper 2 of 5
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986.62 KB
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Checksum (MD5)
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Author(s)
Kim, Hyungdae
Buongiorno, Jacopo
Hu, Lin-Wen
McKrell, Thomas J.
DeWitt, Gregory Lee
Date Issued
November 2008
Journal
ASME 2008 International Mechanical Engineering Congress and Exposition (IMECE2008) Proceedings
Publisher
ASME
Citation
The objective of this research is to systematically investigate the quenching characteristics of a hot sphere in nanofluids. The experiments are carried out with a small (9.5 mm) stainless steel sphere with initial temperatures near 1000 °C. Alumina nanofluids and deionized water are tested at low volume concentrations (less than 0.1% by volume) and saturated conditions (100 °C). The results show that the quenching behavior in nanofluids is nearly identical to that in pure water. Moreover it is found that some nanoparticles accumulate on the sphere surface during the quenching process. Such accumulation of nanoparticles on the surface promotes the destabilization of the vapor film in subsequent quenching experiments, thus accelerating the return to nucleate boiling at higher temperature than that in the clean surface case.
Version
Final published version
Abstract
Kim, H. et al. “Experimental Study on Quenching of a Small Metal Sphere in Nanofluids.” ASME Conference Proceedings 2008.48715 (2008): 1839-1844. ©2008 ASME
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1115/IMECE2008-67788
