Thermal conductivity of nanoscale colloidal solutions (nanofluids)

Ravi Prasher, Prajesh Bhattacharya, Patrick Phelan

Research output: Contribution to journalArticle

728 Citations (Scopus)

Abstract

Researchers have been perplexed for the past five years with the unusually high thermal conductivity (k) of nanoparticle-laden colloidal solutions (nanofluids). Although various mechanisms and models have been proposed in the literature to explain the high k of these nanofluids, no concrete conclusions have been reached. Through an order-of-magnitude analysis of various possible mechanisms, we show that convection caused by the Brownian movement of these nanoparticles is primarily responsible for the enhancement in k of these colloidal nanofluids.

Original languageEnglish (US)
Article number025901
JournalPhysical Review Letters
Volume94
Issue number2
DOIs
StatePublished - Jan 21 2005

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thermal conductivity
Brownian movements
nanoparticles
convection
augmentation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Thermal conductivity of nanoscale colloidal solutions (nanofluids). / Prasher, Ravi; Bhattacharya, Prajesh; Phelan, Patrick.

In: Physical Review Letters, Vol. 94, No. 2, 025901, 21.01.2005.

Research output: Contribution to journalArticle

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