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dc.contributor.authorPERSOONS, TIMen
dc.contributor.authorMURRAY, DARINAen
dc.date.accessioned2015-01-05T16:26:48Z
dc.date.available2015-01-05T16:26:48Z
dc.date.issued2014en
dc.date.submitted2014en
dc.identifier.citationSajad Alimohammadi, Darina B. Murray and Tim Persoons, Experimental Validation of a Computational Fluid Dynamics Methodology for Transitional Flow Heat Transfer Characteristics of a Steady Impinging Jet, Journal of Heat Transfer, 136, 9, 2014, 091703 -en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/72885
dc.descriptionPUBLISHEDen
dc.description.abstractThis paper presents a computational fluid dynamics (CFD) methodology to accurately predict the heat transfer characteristics of an unconfined steady impinging air jet in the transitional flow regime, impinging on a planar constant-temperature surface. The CFD methodology is validated using detailed experimental measurements of the local surface heat transfer coefficient. The numerical model employs a transitional turbulence model which captures the laminar–turbulent transition in the wall jet which precisely predicts the intensity and extent of the secondary peak in the radial Nusselt number distribution. The paper proposes a computationally low-cost turbulence model which yields the most accurate results for a wide range of operating and geometrical conditions. A detailed analysis of the effect of mesh grid size and properties, inflow conditions, turbulence model, and turbulent Prandtl number Prt is presented. The numerical uncertainty is quantified by the grid convergence index (GCI) method. In the range of Reynolds number 6000 ≤ Re ≤ 14,000 and nozzle-to-surface distance 1 ≤ H/D ≤ 6, the model is in excellent agreement with the experimental data. For the case of H/D = 1 and Re = 14,000, the maximum deviations are 5%, 3%, and 2% in terms of local, area-averaged and stagnation point Nusselt numbers, respectively. Experimental and numerical correlations are presented for the stagnation point Nusselt number.en
dc.format.extent091703en
dc.language.isoenen
dc.relation.ispartofseriesJournal of Heat Transferen
dc.relation.ispartofseries136en
dc.relation.ispartofseries9en
dc.rightsYen
dc.subjectFlow dynamicsen
dc.titleExperimental Validation of a Computational Fluid Dynamics Methodology for Transitional Flow Heat Transfer Characteristics of a Steady Impinging Jeten
dc.typeJournal Articleen
dc.contributor.sponsorScience Foundation Ireland (SFI)en
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/persoonten
dc.identifier.peoplefinderurlhttp://people.tcd.ie/dmurrayen
dc.identifier.rssinternalid95064en
dc.identifier.doihttp://dx.doi.org/10.1115/1.4027840en
dc.rights.ecaccessrightsopenAccess
dc.contributor.sponsorGrantNumber07/RFP/ENM123en
dc.subject.TCDThemeSmart & Sustainable Planeten
dc.subject.TCDThemeTelecommunicationsen


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