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题名Cavitation dynamics and thermodynamic effects at elevated temperatures in a small Venturi channel
作者
发表日期2021-05-01
发表期刊International Journal of Heat and Mass Transfer
ISSN/eISSN0017-9310
卷号170
摘要

The effects of temperature on hydraulic cavitation dynamics are investigated under various operating conditions, in a close loop cavitation tunnel with a small-scale venturi type section. A systematic study is performed with temperatures varying between 24°C and 85°C, using a high-speed visualization system to observe the cavitating flow. The image processing methods provided in the paper present a quantitative comparison of the cavitation dynamics and structure development. The results show that the increase of the fluid temperature induces the growth of the cavitation volume up to about 55°C, thereafter an additional increase in temperature has the opposite effect. This evolution is interpreted as a competition between a Reynolds effect and the well-known thermal effect. Cavitation is more closely investigated within the temperature range 50°C - 65°C, to analyze the changes in the structure and the cavitation dynamics. For the prediction of thermal suppression head, the thermal effect parameter Σ which can be used empirically, is derived at the maximum cavitation length. This fluid thermodynamic parameter Σ(T) at the transition peak can be referred to to avoid the maximum cavitation aggressiveness induced vibration or erosion for thermos-fluids around the thermal transition temperature. Finally, the factors influencing cavitation length and shedding frequency are presented and analyzed.

关键词Cavitation dynamics Hot water Hydrodynamic cavitation Thermodynamic effects Venturi-type constriction
DOI10.1016/j.ijheatmasstransfer.2021.120970
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收录类别SCIE
语种英语English
WOS研究方向Thermodynamics ; Engineering ; Mechanics
WOS类目Thermodynamics ; Engineering, Mechanical ; Mechanics
WOS记录号WOS:000641140400010
Scopus入藏号2-s2.0-85100266528
引用统计
被引频次:96[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符https://repository.uic.edu.cn/handle/39GCC9TT/12308
专题个人在本单位外知识产出
通讯作者Coutier-Delgosha, Olivier
作者单位
1.Kevin T. Crofton Department of Aerospace and Ocean Engineering,Virginia Tech,Blacksburg,24060,United States
2.Laboratory for Water and Turbine Machines,Faculty of Mechanical Engineering,University of Ljubljana,Ljubljana,Askerceva 6,1000,Slovenia
3.Univ. Lille,CNRS,ONERA,Arts et Metiers ParisTech,Centrale Lille,FRE 2017 - LMFL - Laboratoire de Mecanique des fluides de Lille - Kampe de Feriet,Lille,F-59000,France
推荐引用方式
GB/T 7714
Ge, Mingming,Petkovšek, Martin,Zhang, Guangjianet al. Cavitation dynamics and thermodynamic effects at elevated temperatures in a small Venturi channel[J]. International Journal of Heat and Mass Transfer, 2021, 170.
APA Ge, Mingming, Petkovšek, Martin, Zhang, Guangjian, Jacobs, Drew, & Coutier-Delgosha, Olivier. (2021). Cavitation dynamics and thermodynamic effects at elevated temperatures in a small Venturi channel. International Journal of Heat and Mass Transfer, 170.
MLA Ge, Mingming,et al."Cavitation dynamics and thermodynamic effects at elevated temperatures in a small Venturi channel". International Journal of Heat and Mass Transfer 170(2021).
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