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Bang, In Cheol
Nuclear Thermal-Hydraulics & Reactor Safety Lab
Research Interests
  • Nuclear Thermal-Hydraulics
  • Nuclear Safety
  • Nuclear System Design & Analysis
  • Nanofluids
  • Critical Heat Flux

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Effects of nanoparticle deposition on surface wettability influencing boiling heat transfer in nanofluids

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Title
Effects of nanoparticle deposition on surface wettability influencing boiling heat transfer in nanofluids
Author
Kim, S. J.Bang, In CheolBuongiorno, J.Hu, L. W.
Keywords
Nanofluids; Porous layer; Surface wettability
Issue Date
2006-10
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.89, no.15, pp.1 - 3
Abstract
Buildup of a porous layer of nanoparticles on the heated surface occurs upon boiling of nanofluids containing alumina, zirconia, or silica nanoparticles. This layer significantly improves the surface wettability, as shown by a reduction of the static contact angle on the nanofluid-boiled surfaces compared with the pure-water-boiled surfaces. The contact angle reduction is attributed to changes in surface energy and surface morphology brought about by the presence of the nanoparticle layer. The high surface wettability can plausibly explain the boiling critical heat flux enhancement in nanofluids.
URI
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DOI
10.1063/1.2360892
ISSN
0003-6951
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