TITLE

Effect of hydration layer and surface wettability in enhancing thermal conductivity of nanofluids

AUTHOR(S)
Sachdeva, Parveen; Kumar, Ranganathan
PUB. DATE
November 2009
SOURCE
Applied Physics Letters;11/30/2009, Vol. 95 Issue 22, p223105
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In a molecular dynamics study of water based nanofluids, we show that a hydration layer is formed at the particle-fluid interface, where the attraction or cohesive potential between the liquid molecules is dominant. In the hydration layer, the collision mode rather than the kinetic or potential mode is primarily responsible for the enhancement of thermal transport properties in nanofluids, as it results in more interactions. The thermal conductivity for a wetting particle is found to be higher than for a neutral or a nonwetting particle.
ACCESSION #
45610542

 

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