Heat transfer enhancement iheat transfer enhancement in a channel with inclined baffles under pulsating flow: a cfd studyn a channel with inclıned baffles under pulsating flow: a cfd study

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dc.contributor.authorAkçay, Selma
dc.contributor.authorAkdağ, Ünal
dc.date.accessioned2023-10-11T07:53:38Z
dc.date.available2023-10-11T07:53:38Z
dc.date.issued2023
dc.departmentMühendislik Fakültesi
dc.description.abstractThis study numerically investigated hydraulic and thermal performance in a channel with inclined baffles under pulsating flow conditions. The baffles were placed in a staggered arrangement. The governing equations were discretized with the finite volume method (FVM), and the pressure-velocity coupling was handled by the SIMPLE algorithm. The Strouhal number (St: 0.5, 1, 2, 3, and 4), pulsation amplitude (A: 0.2, 0.5, and 0.8), and Reynolds number (200 ? Re ? 1000) were changed. The top and bottom surfaces of the channel were kept at Tw = 350 K, and thermal improvement and friction factor were calculated for a pulsating cycle. The results were given in terms of thermal enhancement (?), relative friction factor (frel), and performance evaluation criteria (PEC). The flow and temperature contours were presented to determine the impacts of the pulsation frequency, the pulsation amplitude, and the Reynolds number. The results showed that the pulsation amplitude and the pulsation frequency contributed remarkably to thermal enhancement with increasing Reynolds numbers, while the heat transfer improved significantly depending on pulsation parameters together with a slight rise in friction factor. The highest thermal enhancement achieved was about 1.47 at Re = 1000, A = 0.8, and St = 4. The highest PEC obtained was approximately 1.12 at Re = 1000, A= 0.2, and St = 4. © 2023 Begell House Inc.. All rights reserved.
dc.identifier.doi10.1615/JEnhHeatTransf.2023047227
dc.identifier.endpage79en_US
dc.identifier.issn1065-5131
dc.identifier.issue5en_US
dc.identifier.scopusqualityQ2
dc.identifier.startpage61en_US
dc.identifier.urihttps:/dx.doi.org10.1615/JEnhHeatTransf.2023047227
dc.identifier.urihttps://hdl.handle.net/20.500.12451/11133
dc.identifier.volume30en_US
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherBegell House Inc.
dc.relation.ispartofJournal of Enhanced Heat Transfer
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectCFD
dc.subjectFriction Factor
dc.subjectHeat Transfer Enhancement
dc.subjectInclined Baffle
dc.subjectPulsating Flow
dc.titleHeat transfer enhancement iheat transfer enhancement in a channel with inclined baffles under pulsating flow: a cfd studyn a channel with inclıned baffles under pulsating flow: a cfd study
dc.typeArticle

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