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dc.contributor.authorZhai, Lijing
dc.contributor.authorXu, Guoqiang
dc.contributor.authorQuan, Yongkai
dc.contributor.authorSong, Gu
dc.contributor.authorDong, Bensi
dc.contributor.authorWu, Hongwei
dc.date.accessioned2018-03-01T17:00:40Z
dc.date.available2018-03-01T17:00:40Z
dc.date.issued2017-11-30
dc.identifier.citationZhai , L , Xu , G , Quan , Y , Song , G , Dong , B & Wu , H 2017 , ' Numerical analysis of the axial heat conduction with variable fluid properties in a forced laminar flow tube ' , International Journal of Heat and Mass Transfer , vol. 114 , pp. 238-251 . https://doi.org/10.1016/j.ijheatmasstransfer.2017.06.041
dc.identifier.issn0017-9310
dc.identifier.otherPURE: 11927069
dc.identifier.otherPURE UUID: 8fe0ffc5-fc6f-4ded-bd85-4631932a586d
dc.identifier.otherScopus: 85021065769
dc.identifier.urihttp://hdl.handle.net/2299/19843
dc.descriptionThis document is the Accepted Manuscript version of the following article: Lijing Zhai, et al, ‘Numerical analysis of the axial heat conduction with variable fluid properties in a forced laminar flow tube’, International Journal of Heat and Mass Transfer, Vol. 114: 238-251, November 2017. Under embargo until 22 June 2018. The final, definitive version is available online at doi: https://doi.org/10.1016/j.ijheatmasstransfer.2017.06.041.
dc.description.abstractIn this article, a theoretical model is developed to investigate the effects of the axial heat conduction on the laminar forced convection in a circular tube with uniform internal heat generation in the solid wall. In the current work, three different fluids, i.e. water, n-decane and air, are selected on purpose since their thermophysical properties show different behavior with temperature. The effects of the axial heat conduction with varying dynamic viscosity and/or varying thermal conductivity are investigated in a systematic manner. Results indicate that the variable-property effects could alleviate the reduction in Nusselt number (Nu) due to the axial heat conduction. For the case of Peclet number (Pe) equal to 100, wall thickness to inner diameter ratio of 1 and solid wall to fluid thermal conductivity ratio of 100, the maximum Nu deviation between constant and variable properties are up to 7.33% at the entrance part for water in the temperature range of 50℃, and 4.45% at the entrance part for n-decane in the temperature range of 120℃, as well as 2.20% at the ending part for air in the temperature range of 475℃, respectively. In addition, the average Nu deviation for water, n-decane and air are 3.24%, 1.94% and 1.74%, respectively. Besides, Nu decreases drastically with decreasing Pe when Pe≤500 and with increasing solid wall to fluid thermal conductivity ratio ( ) when ≤100. It is also found that variable properties have more obvious effects on the velocity profile at the upstream part while more obvious effects on the temperature profile at the downstream part.en
dc.format.extent14
dc.language.isoeng
dc.relation.ispartofInternational Journal of Heat and Mass Transfer
dc.rightsEmbargoed
dc.titleNumerical analysis of the axial heat conduction with variable fluid properties in a forced laminar flow tubeen
dc.contributor.institutionSchool of Engineering and Technology
dc.contributor.institutionEnergy and Sustainable Design
dc.description.statusPeer reviewed
dc.date.embargoedUntil2018-06-22
dc.relation.schoolSchool of Engineering and Technology
dc.description.versiontypeFinal Accepted Version
dcterms.dateAccepted2017-11-30
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1016/j.ijheatmasstransfer.2017.06.041
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
rioxxterms.licenseref.startdate2018-06-22
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.date.embargo2018-06-22
herts.rights.accesstypeEmbargoed


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