Conjugate forced convective heat transfer in a sandwich panel with a Kagome truss core: The effects of strut length and diameter

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dc.authoridKahveci, Kamil/0000-0003-2492-8690
dc.authoridKemerli, Ubade/0000-0003-4660-9121
dc.authorwosidKahveci, Kamil/A-2954-2016
dc.contributor.authorKemerli, Ubade
dc.contributor.authorKahveci, Kamil
dc.date.accessioned2024-06-12T11:07:23Z
dc.date.available2024-06-12T11:07:23Z
dc.date.issued2020
dc.departmentTrakya Üniversitesien_US
dc.description.abstractHeat exchangers with a cellular metal core have become an alternative to those with louvered fins due to their high heat transfer performance and mechanical strength. Because of the multi-functionality, they are mostly used in systems such as rockets and space vehicles or in others in need of both high heat transfer performance and mechanical strength. The geometrical parameters of the unit cell of cellular metals have important effects on both fluid and heat transfer characteristics and these effects need to be studied. Accordingly, conjugate forced convective heat transfer in a sandwich panel with a Kagome truss core both with a constant heat flux (CHF) and a constant temperature (CT) boundary condition was studied numerically in this study for various values of the Reynolds number, strut length, and strut diameter. The 3D turbulent flow and heat transfer was modeled by the RNG k-epsilon turbulence model. The near-wall behavior of the flow was modelled by enhanced wall treatment. The channel was extended before and after the Kagome core to avoid entrance and exit effects. The computational results were obtained for the Reynolds numbers in the range of about 6000-17000, for the strut lengths of 3, 5 and 7 mm, and for the strut diameters of 1.3 and 1.6 mm. A nonlinear regression analysis was also performed for the pressure loss coefficient and average Nusselt number. The numerical results show that complex flow structures develop in the flow field due to the presence of unit cells. The results also show that the pressure drop along the Kagome core increases considerably with decreasing strut length and increasing strut diameter. The average Nusselt number increases significantly when the strut length is decreased and shows a small increase with an increase in the strut diameter. The effect of strut diameter on average Nusselt number becomes marginal for strut length of 3 mm. The average heat transfer rate for a fixed pumping power shows a considerable increase with a decrease in the strut length and a small increase with the strut diameter for high values of strut length. On the other hand, for the strut length of 3 mm, it shows a small decrease with an increase in the strut diameter for the CT case and remains almost constant for the CHF case.en_US
dc.identifier.doi10.1016/j.applthermaleng.2019.114794
dc.identifier.issn1359-4311
dc.identifier.scopus2-s2.0-85076702994en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.applthermaleng.2019.114794
dc.identifier.urihttps://hdl.handle.net/20.500.14551/22000
dc.identifier.volume167en_US
dc.identifier.wosWOS:000513289700037en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherPergamon-Elsevier Science Ltden_US
dc.relation.ispartofApplied Thermal Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectKagomeen_US
dc.subjectTrussen_US
dc.subjectStruten_US
dc.subjectNusselt Numberen_US
dc.subjectConjugate Heat Transferen_US
dc.subjectFluid-Flowen_US
dc.subjectMetal Foamsen_US
dc.subjectNumerical-Simulationen_US
dc.subjectPerformanceen_US
dc.subjectLatticeen_US
dc.subjectTopologyen_US
dc.subjectSinksen_US
dc.titleConjugate forced convective heat transfer in a sandwich panel with a Kagome truss core: The effects of strut length and diameteren_US
dc.typeArticleen_US

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