发表状态 | 已发表Published |
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
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ISSN/eISSN | 0017-9310 |
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 |
DOI | 10.1016/j.ijheatmasstransfer.2021.120970 |
URL | 查看来源 |
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 | |
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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