Nanoscale heat transfer and phase transformation surrounding intensely heated nanoparticles

Pawel Keblinski, Samy Merabia, Jean Louis Barrat, Sergei Shenogin, David G Cahill

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Using molecular dynamics simulations and theoretical analysis we study heat flow and phase behavior at the interface between high power-density, nanoscale heat sources and an embedding fluid medium. We show that the fluid next to the nanoparticle can be heated well above its boiling point without a phase change. Under increasing nanoparticle temperature, the heat flux saturates, which is in sharp contrast with the case of flat interfaces, where a critical heat flux is observed followed by development of a vapor layer and heat flux drop. These differences in heat transfer are explained by the curvature-induced pressure close to the nanoparticle, which inhibits boiling. We observe similar behavior for water, organic fluid, as well as generic model fluid underscoring generality of the results. We will also discuss the limits of the spatial and temporal localization of extreme temperature excursions and the limits to the applicability of the linear response theory to heat transfer at extremely large heat fluxes.

Original languageEnglish (US)
Title of host publicationProceedings of the ASME International Mechanical Engineering Congress and Exposition 2009, IMECE 2009
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages141-145
Number of pages5
ISBN (Print)9780791843864
DOIs
StatePublished - Jan 1 2010
EventASME 2009 International Mechanical Engineering Congress and Exposition, IMECE2009 - Lake Buena Vista, FL, United States
Duration: Nov 13 2009Nov 19 2009

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings
Volume13

Other

OtherASME 2009 International Mechanical Engineering Congress and Exposition, IMECE2009
CountryUnited States
CityLake Buena Vista, FL
Period11/13/0911/19/09

ASJC Scopus subject areas

  • Mechanical Engineering

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  • Cite this

    Keblinski, P., Merabia, S., Barrat, J. L., Shenogin, S., & Cahill, D. G. (2010). Nanoscale heat transfer and phase transformation surrounding intensely heated nanoparticles. In Proceedings of the ASME International Mechanical Engineering Congress and Exposition 2009, IMECE 2009 (pp. 141-145). (ASME International Mechanical Engineering Congress and Exposition, Proceedings; Vol. 13). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IMECE2009-13282