Experimental investigations of axial turbulence intensity effect on heat transfer enhancement in duct flow
學年 89
學期 2
發表日期 2001-03-17
作品名稱 Experimental investigations of axial turbulence intensity effect on heat transfer enhancement in duct flow
作品名稱（其他語言）
著者 Chen, T.Y.; Chen, Y.H.; Lee, G.C.; Chen, S.F.
作品所屬單位 淡江大學航空太空工程學系
出版者
會議名稱 中華民國2001燃燒學會民航學會航太學會學術聯合會議論文集=CIROC CSCA AASRC joint conference
會議地點 桃園縣, 臺灣
摘要 This research applied a wind tunnel system and a loudspeaker system to investigate the only axial turbulence intensity effect on heat transfer enhancement in duct flows. The loudspeaker was attached to the exit plane of wind tunnel to generate an acoustic wave inside the wind tunnel system. Nearly constant axial velocity perturbations in the test section of wind tunnel were obtained by carefully adjusting the frequency of the generated acoustic wave. The study included the temperature measurements by thermocouples along a heated wall to obtain the Nusselt numbers and thermal boundary layers under different axial turbulence intensities. Also, the near-wall velocity fields were measured by an LDV system to check the applicability of the developed system and to characterize velocity boundary layer. The results suggest that the axial turbulence intensity plays a negligible role in heat transfer enhancement.
關鍵字 heat transfer;argumentation;turbulence intensity;acoustics
語言 en
收錄於
會議性質 國內
校內研討會地點
研討會時間 20010317~20010317
通訊作者
國別 TWN
公開徵稿 Y
出版型式 紙本
出處 中華民國2001燃燒學會民航學會航太學會學術聯合會議論文集=CIROC CSCA AASRC joint conference, pp.AA263-AA270
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