Experimental and numerical study of heat transfer from a heated flat plate in a rectangular channel with an impinging air jet

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dc.authoridBaskaya, Senol/0000-0001-9676-4387
dc.authoridKILIC, MUSTAFA/0000-0002-8006-149X
dc.authoridCalisir, Tamer/0000-0002-0721-0444
dc.contributor.authorKılıç, Mustafa
dc.contributor.authorCalisir, Tamer
dc.contributor.authorBaşkaya, Şenol
dc.date.accessioned2025-01-06T17:43:17Z
dc.date.available2025-01-06T17:43:17Z
dc.date.issued2017
dc.description.abstractThermal control of electronic components is a continuously emerging problem as power loads keep increasing. To solve these thermal problems impinging jets are generally used in engineering, science and industry for its good heat transfer performance. In this study; cooling of a flat plate under constant heat flux condition, inside a rectangular channel, consisting of one open and three blocked sides was experimentally and numerically investigated using a single air jet flow. The impingement surface was a copper plate of the same width as the jet nozzle. Inlet flow velocities were measured using a Laser Doppler Anemometer (LDA) system. Temperature measurements were performed using thermocouples. Local and mean Nu numbers were determined as a function of two parameters, (a) Jet-to-plate distance (H/D (h)) in the range of 4-10 and (b) Reynolds number based on the hydraulic diameter of the slot nozzle in the range of 4000-10,000 (corresponding to an exit jet velocity from 6.5 to 16.2 m/s). Numerical investigation was also performed. Low Re number k-epsilon turbulence model was used during investigations. The results are presented in the form of graphs showing the variation of the local Nusselt number as a function of these parameters. The effect of Re number on local Nu number was examined for qaEuro(3) = 1000 W/m(2) and H/D (h) = 6. In general, it was observed that heat transfer is sensitive to the Reynolds number and increases with increasing Re number. Average Nusselt number increases of 49.5 % from Re = 4000 to Re = 10000. Effect of H/D (h) on heat transfer under impinging air jets was examined with local Nusselt numbers. Local Nusselt number was less sensitive to H/D (h) in the range of H/D (h) = 4-10. Average Nusselt number decreases of 17.9 % from H/D (h) = 4 to H/D (h) = 10. The highest average Nu number was achieved for Re = 10,000 and H/D (h) = 4. The numerical results agreed well with the experimental data, including local and average Nusselt numbers. Correlations are proposed to predict the local Nusselt number as a function of Re number and H/D (h.).
dc.description.sponsorshipScientific Research Council of Turkey [113M331]
dc.description.sponsorshipThe financial support of this study by the Scientific Research Council of Turkey, through grant number 113M331, is gratefully acknowledged.
dc.identifier.doi10.1007/s40430-016-0521-y
dc.identifier.endpage344
dc.identifier.issn1678-5878
dc.identifier.issn1806-3691
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85002955802
dc.identifier.scopusqualityQ2
dc.identifier.startpage329
dc.identifier.urihttps://doi.org/10.1007/s40430-016-0521-y
dc.identifier.urihttps://hdl.handle.net/20.500.14669/2601
dc.identifier.volume39
dc.identifier.wosWOS:000389988800026
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer Heidelberg
dc.relation.ispartofJournal of The Brazilian Society of Mechanical Sciences and Engineering
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241211
dc.subjectImpinging jet
dc.subjectHeat transfer
dc.subjectChannel
dc.subjectFlat plate
dc.subjectCFD
dc.titleExperimental and numerical study of heat transfer from a heated flat plate in a rectangular channel with an impinging air jet
dc.typeArticle

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