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Local Convective Heat Transfer from a Horizontal Tube in an Acoustic Cavitation Field
引用本文:Dingwei ZHOU Xuegong HU Dengying LIU Institute of Engineering Thermophysics,Chinese Academy of Sciences,P. O. Box 2706,Beijing 100080,China. Local Convective Heat Transfer from a Horizontal Tube in an Acoustic Cavitation Field[J]. 热科学学报(英文版), 2004, 13(4): 338-343. DOI: 10.1007/s11630-004-0052-1
作者姓名:Dingwei ZHOU Xuegong HU Dengying LIU Institute of Engineering Thermophysics  Chinese Academy of Sciences  P. O. Box 2706  Beijing 100080  China
作者单位:Dingwei ZHOU Xuegong HU Dengying LIU Institute of Engineering Thermophysics,Chinese Academy of Sciences,P. O. Box 2706,Beijing 100080,China
摘    要:
An experiment has been carried out to investigate the local convective heat transfer from a horizontal circular copper tube in an acoustic cavitation field. The effects of acoustical parameters (including sound source intensity, the vibrator location and sound distance), fluid temperature and thermophysical properties of working fluid on heat transfer enhancement were studied, as well as the variation of heat transfer rate with sound source intensity at constant heat flux. Results show that convection heat transfer was remarkably enhanced due to disturbance and impingement by cavitation bubble. Among these cases tested, the maximum augmentation ratio of 3.95 was reached for acetone with a cluster of cavitation bubbles impinging perpendicularly on the tube surface.

收稿时间:2004-02-18

Local convective heat transfer from a horizontal tube in an acoustic cavitation field
Dingwei Zhou,Xuegong Hu,Dengying Liu. Local convective heat transfer from a horizontal tube in an acoustic cavitation field[J]. Journal of Thermal Science, 2004, 13(4): 338-343. DOI: 10.1007/s11630-004-0052-1
Authors:Dingwei Zhou  Xuegong Hu  Dengying Liu
Affiliation:(1) Institute of Engineering Thermophysics, Chinese Academy of Sciences, P. O. Box 2706, 100080 Beijing, China
Abstract:
An experiment has been carried out to investigate the local convective heat transfer from a horizontal circular copper tube in an acoustic cavitation field. The effects of acoustical parameters (including sound source intensity, the vibrator location and sound distance), fluid temperature and thermophysical properties of working fluid on heat transfer enhancement were studied, as well as the variation of heat transfer rate with sound source intensity at constant heat flux. Results show that convection heat transfer was remarkably enhanced due to disturbance and impingement by cavitation bubble. Among these cases tested, the maximum augmentation ratio of 3.95 was reached for acetone with a cluster of cavitation bubbles impinging perpendicularly on the tube surface.
Keywords:acoustic cavitation   heat transfer   enhancement   convection   cavitation bubble.
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