教師資料查詢 | 類別: 期刊論文 | 教師: 陳增源 CHEN TSENG-YUAN (瀏覽個人網頁)

標題:Heat Transfer and Flow Characteristics in Impinging Flows with Turbulators
學年95
學期2
出版(發表)日期2007/03/01
作品名稱Heat Transfer and Flow Characteristics in Impinging Flows with Turbulators
作品名稱(其他語言)
著者Chen, Tzeng-yuan; Li, Chia-ching
單位淡江大學航空太空工程學系
出版者臺北縣淡江大學
著錄名稱、卷期、頁數淡江理工學刊=Tamkang Journal of Science and Engineering 10(1)頁95-101
摘要The heat transfer characteristics in impinging flows with turbulators were experimentally investigated. The flow characteristics were also measured to elucidate the obtained heat transfer results. Uniform flows were generated at the inlet of a duct, and flowed out through the duct side-open slots near the duct end. A heat-transfer surface was located at the duct end, perpendicular to the incoming flow for heat transfer measurements. A pair of turbulator was mounted on the duct walls at the duct inlet, including rectangular-plate and triangular-plate turbulators, 45 and 90 angle of attacks. Temperatures on the heat-transfer surface were measured by thermocouples to obtain the average Nusselt number. Three-component mean and fluctuating velocity measurements by laser Doppler velocimetry were conducted to characterize the flow structures and to obtain the flow characteristics near the heat-transfer surface. Results show that the turbulators have the effect to increase the flow mean impinging velocity, axial vorticity and turbulent kinetic energy near the heat transfer surface and, thus, to augment the heat transfer. The 90 rectangular-plate turbulator and 45 delta-wing turbulator cause the largest and least heat transfer augmentation among the investigated turbulators, respectively.
關鍵字Convective heat transfer ; Impinging flow ; Turbulator
語言英文
ISSN1560-6686
期刊性質國際
收錄於
產學合作
通訊作者
審稿制度
國別中華民國
公開徵稿
出版型式紙本
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