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dc.contributor.authorKasam, Alishaen
dc.contributor.authorLee, JIen
dc.contributor.authorShwageraus, Evgenien
dc.date.accessioned2019-05-20T23:30:27Z
dc.date.available2019-05-20T23:30:27Z
dc.date.issued2019-11-01en
dc.identifier.issn0306-4549
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/292998
dc.description.abstractThis study explores heat transfer behaviour in mixed convection of a fluid with internal heat generation, a situation found in chemical and nuclear engineering contexts. Computational fluid dynamics is used to simulate laminar ascending mixed convection flow of a heat-generating fluid in a vertical cylinder with uniformly cooled wall, based on a liquid nuclear fuel concept. A new non-dimensional parameter, the IHG-flux number Ω, is developed to express the balance of axial convection versus radial conduction heat transfer. It was found that heat transfer behaviour depends on this parameter, and it can be used as the transition criterion to categorise the simulated results into three distinct heat transfer regimes. A heat transfer correlation using Ω was also developed for Regime I with small values of Ω, where convection and conduction effects are balanced in a stable flow. In Regime II at intermediate Ω, stronger convection gives rise to flow instability. In Regime III with large Ω, convection dominates and the temperature profile inverts so that the maximum temperature occurs at the wall, while instability remains likely.
dc.publisherElsevier Ltd.
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleNumerical study of heat transfer in ascending mixed convection with internal heat generationen
dc.typeArticle
prism.endingPage144
prism.publicationDate2019en
prism.publicationNameAnnals of Nuclear Energyen
prism.startingPage138
prism.volume133en
dc.identifier.doi10.17863/CAM.40149
dcterms.dateAccepted2019-05-04en
rioxxterms.versionofrecord10.1016/j.anucene.2019.05.004en
rioxxterms.versionAM
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2019-11-01en
dc.contributor.orcidKasam, Alisha [0000-0002-3399-5038]
dc.contributor.orcidShwageraus, Evgeni [0000-0002-7309-4920]
dc.identifier.eissn1873-2100
rioxxterms.typeJournal Article/Reviewen
cam.orpheus.successThu Jan 30 10:45:50 GMT 2020 - Embargo updated*
rioxxterms.freetoread.startdate2020-11-01


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Attribution-NonCommercial-NoDerivatives 4.0 International
Except where otherwise noted, this item's licence is described as Attribution-NonCommercial-NoDerivatives 4.0 International