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A new heat propagation velocity prevails over Brownian particle velocities in determining the thermal conductivities of nanofluids

Cited 13 time in Web of Science Cited 18 time in Scopus
Authors
Kihm, Kenneth D.; Chon, Chan Hee; Choi, Stephen U. S.; Lee, Joon Sik
Issue Date
2011-04-27
Publisher
SPRINGER
Citation
NANOSCALE RESEARCH LETTERS; Vol.6 ; -
Abstract
An alternative insight is presented concerning heat propagation velocity scales in predicting the effective thermal conductivities of nanofluids. The widely applied Brownian particle velocities in published literature are often found too slow to describe the relatively higher nanofluid conductivities. In contrast, the present model proposes a faster heat transfer velocity at the same order as the speed of sound, rooted in a modified kinetic principle. In addition, this model accounts for both nanoparticle heat dissipation as well as coagulation effects. This novel model of effective thermal conductivities of nanofluids agrees well with an extended range of experimental data.
ISSN
1931-7573
Language
English
URI
http://hdl.handle.net/10371/74921
DOI
https://doi.org/10.1186/1556-276X-6-361
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Mechanical Aerospace Engineering (기계항공공학부)Journal Papers (저널논문_기계항공공학부)
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