Modeling the natural convective flow of micropolar nanofluids

Handle URI:
http://hdl.handle.net/10754/563284
Title:
Modeling the natural convective flow of micropolar nanofluids
Authors:
Bourantas, Georgios; Loukopoulos, Vassilios C.
Abstract:
A micropolar model for nanofluidic suspensions is proposed in order to investigate theoretically the natural convection of nanofluids. The microrotation of the nanoparticles seems to play a significant role into flow regime and in that manner it possibly can interpret the controversial experimental data and theoretical numerical results over the natural convection of nanofluids. Natural convection of a nanofluid in a square cavity is studied and computations are performed for Rayleigh number values up to 106, for a range of solid volume fractions (0 ≤ φ ≤ 0.2) and, different types of nanoparticles (Cu, Ag, Al2O3 and TiO 2). The theoretical results show that the microrotation of the nanoparticles in suspension in general decreases overall heat transfer from the heated wall and should not therefore be neglected when computing heat and fluid flow of micropolar fluids, as nanofluids. The validity of the proposed model is depicted by comparing the numerical results obtained with available experimental and theoretical data. © 2013 Elsevier Ltd. All rights reserved.
KAUST Department:
Applied Mathematics and Computational Science Program; Biological and Environmental Sciences and Engineering (BESE) Division; Physical Sciences and Engineering (PSE) Division
Publisher:
Elsevier BV
Journal:
International Journal of Heat and Mass Transfer
Issue Date:
Jan-2014
DOI:
10.1016/j.ijheatmasstransfer.2013.09.006
Type:
Article
ISSN:
00179310
Appears in Collections:
Articles; Applied Mathematics and Computational Science Program; Physical Sciences and Engineering (PSE) Division; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorBourantas, Georgiosen
dc.contributor.authorLoukopoulos, Vassilios C.en
dc.date.accessioned2015-08-03T11:44:51Zen
dc.date.available2015-08-03T11:44:51Zen
dc.date.issued2014-01en
dc.identifier.issn00179310en
dc.identifier.doi10.1016/j.ijheatmasstransfer.2013.09.006en
dc.identifier.urihttp://hdl.handle.net/10754/563284en
dc.description.abstractA micropolar model for nanofluidic suspensions is proposed in order to investigate theoretically the natural convection of nanofluids. The microrotation of the nanoparticles seems to play a significant role into flow regime and in that manner it possibly can interpret the controversial experimental data and theoretical numerical results over the natural convection of nanofluids. Natural convection of a nanofluid in a square cavity is studied and computations are performed for Rayleigh number values up to 106, for a range of solid volume fractions (0 ≤ φ ≤ 0.2) and, different types of nanoparticles (Cu, Ag, Al2O3 and TiO 2). The theoretical results show that the microrotation of the nanoparticles in suspension in general decreases overall heat transfer from the heated wall and should not therefore be neglected when computing heat and fluid flow of micropolar fluids, as nanofluids. The validity of the proposed model is depicted by comparing the numerical results obtained with available experimental and theoretical data. © 2013 Elsevier Ltd. All rights reserved.en
dc.publisherElsevier BVen
dc.subjectMeshfree point collocation methoden
dc.subjectMicropolar flowen
dc.subjectNanofluidsen
dc.subjectNatural convectionen
dc.subjectVelocity-correction methoden
dc.subjectVelocity-vorticity formulationen
dc.titleModeling the natural convective flow of micropolar nanofluidsen
dc.typeArticleen
dc.contributor.departmentApplied Mathematics and Computational Science Programen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalInternational Journal of Heat and Mass Transferen
dc.contributor.institutionDepartment of Physics, University of Patras, Patras 26500 Rion, Greeceen
kaust.authorBourantas, Georgiosen
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.