Role of Brownian motion on the thermal conductivity enhancement of nanofluids
Abbreviated Journal Title
Appl. Phys. Lett.
TRANSPORT; DYNAMICS; Physics, Applied
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.
Applied Physics Letters
"Role of Brownian motion on the thermal conductivity enhancement of nanofluids" (2007). Faculty Bibliography 2000s. 7192.