Title

Role of Brownian motion on the thermal conductivity enhancement of nanofluids

Authors

Authors

A. Gupta;R. Kumar

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

Appl. Phys. Lett.

Keywords

TRANSPORT; DYNAMICS; Physics, Applied

Abstract

This study involves Brownian dynamics simulations of a real nanofluid system in which the interparticle potential is determined based on Debye length and surface interaction of the fluid and the solid. This paper shows that Brownian motion can increase the thermal conductivity of the nanofluid by 6% primarily due to "random walk" motion and not only through diffusion. This increase is limited by the maximum concentration for each particle size and is below that predicted by the effective medium theory. Beyond the maximum limit, particle aggregates begin to form. Brownian motion contribution stays as a constant beyond a certain particle diameter. (c) 2007 American Institute of Physics.

Journal Title

Applied Physics Letters

Volume

91

Issue/Number

22

Publication Date

1-1-2007

Document Type

Article

Language

English

First Page

3

WOS Identifier

WOS:000251324600068

ISSN

0003-6951

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