Thermal rectification in a fluid reservoir

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dc.contributorVirginia Techen
dc.contributor.authorMurad, Sohailen
dc.contributor.authorPuri, Ishwar K.en
dc.contributor.departmentBiomedical Engineering and Mechanicsen
dc.date.accessed2014-01-10en
dc.date.accessioned2014-01-21T19:28:05Zen
dc.date.available2014-01-21T19:28:05Zen
dc.date.issued2012-03-01en
dc.description.abstractAn organized nonuniform mass distribution in solids leads to a monotonically varying thermal conductivity in a nanomaterial so that the heat flux is directionally dependent. We investigate through molecular dynamics simulations if the influence of an organized mass distribution in a fluid also leads to thermal rectification. Heat transfer is monitored in a water reservoir placed between two (hot and cold) silicon walls. The distribution of the fluid in the reservoirs is organized by applying an external force to each water molecule in a specified direction, creating a density gradient. This external force is smaller than the intermolecular forces in water, in most cases by much more than an order of magnitude. The simulations reveal that mass graded fluid-containing nanosystems can be engineered to possess an asymmetric axial thermal conductance that leads to greater heat flow in the direction of decreasing mass density. The rectification improves as the thermal conductivity is enhanced by increasing the fluid density adjacent to a hot wall, since doing so decreases the interfacial resistance and increases the heat flux. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3696022]en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationMurad, Sohail; Puri, Ishwar K., "Thermal rectification in a fluid reservoir," Appl. Phys. Lett. 100, 121901 (2012); http://dx.doi.org/10.1063/1.3696022en
dc.identifier.doihttps://doi.org/10.1063/1.3696022en
dc.identifier.issn0003-6951en
dc.identifier.urihttp://hdl.handle.net/10919/24936en
dc.identifier.urlhttp://scitation.aip.org/content/aip/journal/apl/100/12/10.1063/1.3696022en
dc.language.isoen_USen
dc.publisherAIP Publishingen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectElemental semiconductorsen
dc.subjectHeat transferen
dc.subjectMolecular dynamics methoden
dc.subjectNanostructured materialsen
dc.subjectReservoirsen
dc.subjectSiliconen
dc.subjectThermal conductivityen
dc.subjectWateren
dc.subjectMolecular-dynamics simulationsen
dc.subjectKapitza resistanceen
dc.subjectSolid interfaceen
dc.subjectConductivityen
dc.subjectTransporten
dc.subjectWateren
dc.subjectPhysicsen
dc.titleThermal rectification in a fluid reservoiren
dc.title.serialApplied Physics Lettersen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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