Unsteady nanoscale thermal transport across a solid-fluid interface

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dc.contributorVirginia Tech. Engineering Science and Mechanics Departmenten
dc.contributor.authorBalasubramanian, Ganeshen
dc.contributor.authorBanerjee, Soumiken
dc.contributor.authorPuri, Ishwar K.en
dc.contributor.departmentBiomedical Engineering and Mechanicsen
dc.date.accessed2015-04-24en
dc.date.accessioned2015-06-01T16:10:46Zen
dc.date.available2015-06-01T16:10:46Zen
dc.date.issued2008-09-15en
dc.description.abstractWe simulate unsteady nanoscale thermal transport at a solid-fluid interface by placing cooler liquid-vapor Ar mixtures adjacent to warmer Fe walls. The equilibration of the system towards a uniform overall temperature is investigated using nonequilibrium molecular dynamics simulations from which the heat flux is also determined explicitly. The Ar-Fe intermolecular interactions induce the migration of fluid atoms into quasicrystalline interfacial layers adjacent to the walls, creating vacancies at the migration sites. This induces temperature discontinuities between the solid-like interfaces and their neighboring fluid molecules. The interfacial temperature difference and thus the heat flux decrease as the system equilibrates over time. The averaged interfacial thermal resistance R(k,av) decreases as the imposed wall temperature T(w) is increased, as R(k,av) alpha T(w)(-4.8). The simulated temperature evolution deviates from an analytical continuum solution due to the overall system heterogeneity. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.2978245]en
dc.format.extent5 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationBalasubramanian, Ganesh, Banerjee, Soumik, Puri, Ishwar K. (2008). Unsteady nanoscale thermal transport across a solid-fluid interface. Journal of Applied Physics, 104(6). doi: 10.1063/1.2978245en
dc.identifier.doihttps://doi.org/10.1063/1.2978245en
dc.identifier.issn0021-8979en
dc.identifier.urihttp://hdl.handle.net/10919/52880en
dc.identifier.urlhttp://scitation.aip.org/content/aip/journal/jap/104/6/10.1063/1.2978245en
dc.language.isoen_USen
dc.publisherAmerican Institute of Physicsen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectLiquid solid interfacesen
dc.subjectInterface structureen
dc.subjectQuasicrystalsen
dc.subjectMolecular dynamicsen
dc.subjectHeat transferen
dc.titleUnsteady nanoscale thermal transport across a solid-fluid interfaceen
dc.title.serialJournal of Applied Physicsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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