Effect of Brownian motion and external magnetic field on the effective heat capacity of ferrofluids

Narges Susan Mousavi Kh.; Sunil Kumar; Arvind Narayanaswamy

doi:10.1115/imece2011-63985

Effect of Brownian motion and external magnetic field on the effective heat capacity of ferrofluids

Narges Susan Mousavi Kh., Sunil Kumar, Arvind Narayanaswamy

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

Abstract

An Eulerian formalism is used to derive the energy equation for a system of magnetic nanoparticles in a fluid (ferrofluid) in the presence of uniform magnetic field. The energy equation proposed here contains an effective heat capacity, which has contributions from: (1) Brownian motion of nanoparticles, (2) magnetic field,(3) temperature, and (4) volume fraction of particles. The modified term quantitatively shows the negligible contribution of the first three factors but the significant effect of concentration of particles in change in heat capacity of ferrofluid. In order to have a better understanding of the problem, the equation is converted to a non dimensional form from which the role of each of physical parameters can be inferred.

Original language	English (US)
Title of host publication	Fluids and Thermal Systems; Advances for Process Industries
Publisher	American Society of Mechanical Engineers (ASME)
Pages	635-644
Number of pages	10
Edition	PARTS A AND B
ISBN (Print)	9780791854921
DOIs	https://doi.org/10.1115/imece2011-63985
State	Published - 2011
Event	ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011 - Denver, CO, United States Duration: Nov 11 2011 → Nov 17 2011

Publication series

Name	ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
Number	PARTS A AND B
Volume	6

Other

Other	ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011
Country/Territory	United States
City	Denver, CO
Period	11/11/11 → 11/17/11

ASJC Scopus subject areas

Mechanical Engineering

Access to Document

10.1115/imece2011-63985

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Mousavi Kh., N. S., Kumar, S., & Narayanaswamy, A. (2011). Effect of Brownian motion and external magnetic field on the effective heat capacity of ferrofluids. In Fluids and Thermal Systems; Advances for Process Industries (PARTS A AND B ed., pp. 635-644). (ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011; Vol. 6, No. PARTS A AND B). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/imece2011-63985

Effect of Brownian motion and external magnetic field on the effective heat capacity of ferrofluids. / Mousavi Kh., Narges Susan; Kumar, Sunil; Narayanaswamy, Arvind.
Fluids and Thermal Systems; Advances for Process Industries. PARTS A AND B. ed. American Society of Mechanical Engineers (ASME), 2011. p. 635-644 (ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011; Vol. 6, No. PARTS A AND B).

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

Mousavi Kh., NS, Kumar, S & Narayanaswamy, A 2011, Effect of Brownian motion and external magnetic field on the effective heat capacity of ferrofluids. in Fluids and Thermal Systems; Advances for Process Industries. PARTS A AND B edn, ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011, no. PARTS A AND B, vol. 6, American Society of Mechanical Engineers (ASME), pp. 635-644, ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011, Denver, CO, United States, 11/11/11. https://doi.org/10.1115/imece2011-63985

Mousavi Kh. NS, Kumar S, Narayanaswamy A. Effect of Brownian motion and external magnetic field on the effective heat capacity of ferrofluids. In Fluids and Thermal Systems; Advances for Process Industries. PARTS A AND B ed. American Society of Mechanical Engineers (ASME). 2011. p. 635-644. (ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011; PARTS A AND B). doi: 10.1115/imece2011-63985

Mousavi Kh., Narges Susan ; Kumar, Sunil ; Narayanaswamy, Arvind. / Effect of Brownian motion and external magnetic field on the effective heat capacity of ferrofluids. Fluids and Thermal Systems; Advances for Process Industries. PARTS A AND B. ed. American Society of Mechanical Engineers (ASME), 2011. pp. 635-644 (ASME 2011 International Mechanical Engineering Congress and Exposition, IMECE 2011; PARTS A AND B).

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abstract = "An Eulerian formalism is used to derive the energy equation for a system of magnetic nanoparticles in a fluid (ferrofluid) in the presence of uniform magnetic field. The energy equation proposed here contains an effective heat capacity, which has contributions from: (1) Brownian motion of nanoparticles, (2) magnetic field,(3) temperature, and (4) volume fraction of particles. The modified term quantitatively shows the negligible contribution of the first three factors but the significant effect of concentration of particles in change in heat capacity of ferrofluid. In order to have a better understanding of the problem, the equation is converted to a non dimensional form from which the role of each of physical parameters can be inferred.",

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AB - An Eulerian formalism is used to derive the energy equation for a system of magnetic nanoparticles in a fluid (ferrofluid) in the presence of uniform magnetic field. The energy equation proposed here contains an effective heat capacity, which has contributions from: (1) Brownian motion of nanoparticles, (2) magnetic field,(3) temperature, and (4) volume fraction of particles. The modified term quantitatively shows the negligible contribution of the first three factors but the significant effect of concentration of particles in change in heat capacity of ferrofluid. In order to have a better understanding of the problem, the equation is converted to a non dimensional form from which the role of each of physical parameters can be inferred.

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Effect of Brownian motion and external magnetic field on the effective heat capacity of ferrofluids

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