Numerical computation of the effects of brownian motion on the effective thermal conductivity of suspensions

Patrick Phelan; J. R. Pacheco

doi:10.1115/IMECE2007-42706

Numerical computation of the effects of brownian motion on the effective thermal conductivity of suspensions

Patrick Phelan, J. R. Pacheco

Mechanical and Aerospace Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Scopus citations

Abstract

In this paper, a numerical scheme based on the immersed boundary method is used to study the motion of nano-sized particles subjected to Brownian motion and heat transfer. Our objective is to use this numerical technique as a tool to better understand the effect that Brownian forces have on the overall heat transfer process. The conventional approach to perform Brown-ian dynamic simulations is based on the use of a random force in the particle motion such that the fluctuation-dissipation theorem is satisfied. Our preliminary computational results suggest an increase in the thermal conductivity of the bulk fluid. Results are presented for several particles in a two-dimensional space.

Original language	English (US)
Title of host publication	Proceedings of the ASME International Mechanical Engineering Congress and Exposition, IMECE 2007
Pages	383-387
Number of pages	5
DOIs	https://doi.org/10.1115/IMECE2007-42706
State	Published - 2008
Event	ASME International Mechanical Engineering Congress and Exposition, IMECE 2007 - Seattle, WA, United States Duration: Nov 11 2007 → Nov 15 2007

Publication series

Name	ASME International Mechanical Engineering Congress and Exposition, Proceedings
Volume	8 PART A

Other

Other	ASME International Mechanical Engineering Congress and Exposition, IMECE 2007
Country/Territory	United States
City	Seattle, WA
Period	11/11/07 → 11/15/07

ASJC Scopus subject areas

General Engineering
Mechanical Engineering

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10.1115/IMECE2007-42706

Cite this

Phelan, P., & Pacheco, J. R. (2008). Numerical computation of the effects of brownian motion on the effective thermal conductivity of suspensions. In Proceedings of the ASME International Mechanical Engineering Congress and Exposition, IMECE 2007 (pp. 383-387). (ASME International Mechanical Engineering Congress and Exposition, Proceedings; Vol. 8 PART A). https://doi.org/10.1115/IMECE2007-42706

Numerical computation of the effects of brownian motion on the effective thermal conductivity of suspensions. / Phelan, Patrick; Pacheco, J. R.
Proceedings of the ASME International Mechanical Engineering Congress and Exposition, IMECE 2007. 2008. p. 383-387 (ASME International Mechanical Engineering Congress and Exposition, Proceedings; Vol. 8 PART A).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Phelan, P & Pacheco, JR 2008, Numerical computation of the effects of brownian motion on the effective thermal conductivity of suspensions. in Proceedings of the ASME International Mechanical Engineering Congress and Exposition, IMECE 2007. ASME International Mechanical Engineering Congress and Exposition, Proceedings, vol. 8 PART A, pp. 383-387, ASME International Mechanical Engineering Congress and Exposition, IMECE 2007, Seattle, WA, United States, 11/11/07. https://doi.org/10.1115/IMECE2007-42706

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AB - In this paper, a numerical scheme based on the immersed boundary method is used to study the motion of nano-sized particles subjected to Brownian motion and heat transfer. Our objective is to use this numerical technique as a tool to better understand the effect that Brownian forces have on the overall heat transfer process. The conventional approach to perform Brown-ian dynamic simulations is based on the use of a random force in the particle motion such that the fluctuation-dissipation theorem is satisfied. Our preliminary computational results suggest an increase in the thermal conductivity of the bulk fluid. Results are presented for several particles in a two-dimensional space.

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Numerical computation of the effects of brownian motion on the effective thermal conductivity of suspensions

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