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dc.contributor.authorHung, Shuo-Chengen_US
dc.contributor.authorHuang, Szu-Chien_US
dc.contributor.authorLiu, Yao-Hsienen_US
dc.date.accessioned2020-01-02T00:04:22Z-
dc.date.available2020-01-02T00:04:22Z-
dc.date.issued2019-12-25en_US
dc.identifier.issn1359-4311en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.applthermaleng.2019.114393en_US
dc.identifier.urihttp://hdl.handle.net/11536/153405-
dc.description.abstractInternal channels to cool the trailing edges of gas turbine blades were typically installed with pin-fin arrays for higher heat transfer enhancement. In this study, the heat transfer characteristics in a rotating rectangular channel (aspect ratio = 4:1) with differently sized pin-fin arrays were experimentally investigated. Liquid crystal thermography was used to measure heat transfer on the endwall in a staggered pin-fin array at a channel orientation of 135 degrees. The staggered array was composed of four or three pins in a row. Pins of varying diameters were inserted in every row exhibiting four pins; either two or four pins were replaced. The rotation numbers ranged from 0 to 0.33, and the Reynolds numbers ranged from 10,000 to 20,000. The results revealed that flow acceleration, separation, and wake flow contributed to various heat transfer contours. Larger pins contributed to higher local flow velocities through fin spacing and produced higher heat transfer distributions. The effect of rotation improved heat transfer enhancement on both trailing and leading surfaces. The friction factor ratio increased when more large-sized pins were installed in the array.en_US
dc.language.isoen_USen_US
dc.subjectHeat transferen_US
dc.subjectPin-finen_US
dc.subjectLiquid crystalen_US
dc.subjectVisualizationen_US
dc.subjectRotating channelen_US
dc.titleEffect of nonuniform pin size on heat transfer in a rotating rectangular channel with pin-fin arraysen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.applthermaleng.2019.114393en_US
dc.identifier.journalAPPLIED THERMAL ENGINEERINGen_US
dc.citation.volume163en_US
dc.citation.spage0en_US
dc.citation.epage0en_US
dc.contributor.department機械工程學系zh_TW
dc.contributor.departmentDepartment of Mechanical Engineeringen_US
dc.identifier.wosnumberWOS:000498306600074en_US
dc.citation.woscount0en_US
Appears in Collections:Articles