The investigation of the heat transfer characteristics of a cross-flow pulsating jet in a forced flow

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dc.contributor.authorAkdağ, Ünal
dc.contributor.authorAkçay, Selma
dc.contributor.authorDemiral, Doğan
dc.date.accessioned13.07.201910:50:10
dc.date.accessioned2019-07-16T09:14:55Z
dc.date.available13.07.201910:50:10
dc.date.available2019-07-16T09:14:55Z
dc.date.issued2017
dc.departmentMühendislik Fakültesi
dc.description.abstractIn the present study, the effect of a transversely pulsating jet on heat transfer performance over a flat plate is investigated experimentally and numerically. A secondary mass flux by the transverse pulsating jet to the main flow from the front end of the plate with constant heat flux is added. It enhances the heat transfer by placing a periodically changing film layer between the plate and the forced flow on the plate. In the investigations, the Reynolds number in the main stream (or the blowing ratio) and the frequency and amplitude of the pulsating jet are changed while the geometry and Prandtl number remain constant for all cases, and the effect of these parameters on the heat transfer performance is analyzed. The experimental studies are performed at four different blowing ratios for six different frequencies and four different amplitudes, and they are evaluated with respect to heat transfer. In addition, the problem is modeled numerically using control-volume-based commercial code. To explain the heat transfer mechanism, instantaneous velocity and temperature profiles are obtained. The results reveal that the pulsating jet is effective in all plate surfaces and that the heat transfer performance increases with increases in both the Womersley number (W-o) and the dimensionless amplitude (A(o)) at a high blowing ratio (M). The obtained results are presented as a function of dimensionless parameters, which are the primary factors affecting the heat performance on the flat plate.
dc.description.sponsorshipTUBITAK [213M580]
dc.description.sponsorshipThe authors gratefully acknowledge the financial support for this study from the TUBITAK (Grant No. 213M580).
dc.identifier.doi10.1615/ComputThermalScien.2017019765
dc.identifier.endpage582en_US
dc.identifier.issn1940-2503
dc.identifier.issn1940-2554
dc.identifier.issue6en_US
dc.identifier.scopusqualityQ2
dc.identifier.startpage567en_US
dc.identifier.urihttps://doi.org/10.1615/ComputThermalScien.2017019765
dc.identifier.urihttps://hdl.handle.net/20.500.12451/4213
dc.identifier.volume9en_US
dc.identifier.wosWOS:000417781400006
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherBegell House
dc.relation.ispartofComputational Thermal Sciences
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectPulsating Jet
dc.subjectFilm Cooling
dc.subjectForced Flow
dc.subjectHeat Transfer Enhancement
dc.titleThe investigation of the heat transfer characteristics of a cross-flow pulsating jet in a forced flow
dc.typeArticle

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