Article (Scientific journals)
An extended irreversible thermodynamic modelling of size-dependent thermal conductivity of spherical nanoparticles dispersed in homogeneous media
Lebon, Georgy; Machrafi, Hatim; Grmela, M.
2015In Proceedings of the Royal Society. Mathematical, Physical and Engineering Sciences, 471 (2182)
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Keywords :
Extended thermodynamics; Nanocomposites; Phonon gas; Thermal conductivity; Dispersions; Epoxy resins; Germanium; Nanoparticles; Phonons; Thermal conductivity of gases; Thermodynamics; Effective thermal conductivity; Extended irreversible thermodynamics; Homogeneous media; Si nanoparticles; Size dependent; Specific problems; Spherical nanoparticles
Abstract :
[en] The effective thermal conductivity of nanocomposites constituted by nanoparticles and homogeneous host media is discussed from the point of view of extended irreversible thermodynamics. This formalism is particularly well adapted to the description of small length scales. As illustrations, dispersion of Si nanoparticles in Ge (respectively, SiO2 in epoxy resin) homogeneous matrices is investigated, the nanoparticles are assumed to be spherical with a wide dispersion. Four specific problems are studied: the dependence of the effective thermal conductivity on the volume fraction of particles, the type of phonon scattering at the interface particle-matrix, the radius of the nanoparticles and the temperature. © 2015 The Author(s) Published by the Royal Society. All rights reserved.
Disciplines :
Physics
Author, co-author :
Lebon, Georgy ;  Université de Liège - ULiège > Relations académiques et scientifiques (Sciences)
Machrafi, Hatim ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Thermodynamique des phénomènes irréversibles
Grmela, M.;  Department of Chemical Engineering, Ecole Polytechnique de Montréal, Montréal, Canada
Language :
English
Title :
An extended irreversible thermodynamic modelling of size-dependent thermal conductivity of spherical nanoparticles dispersed in homogeneous media
Publication date :
2015
Journal title :
Proceedings of the Royal Society. Mathematical, Physical and Engineering Sciences
ISSN :
1364-5021
eISSN :
1471-2946
Publisher :
Royal Society of London
Volume :
471
Issue :
2182
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 November 2017

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