Numerical Analysis of the energy loss mechanism in cavitation flow of a control valve
Xu, Xiaogang1,2; Fang, Liang1,3; Li, Anjun1; Wang, Zhenbo1; Li, Shuxun2
2021-08
发表期刊INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
ISSN0017-9310
卷号174
摘要Cavitation can cause considerable damage within control valves and nearby pipelines. Despite the extensive research, the mechanism of energy loss in cavitation flow of control valves is not yet adequately understood. In this study, the mechanism of mechanical energy transfer and loss in unsteady cavitation flow and the effect of cavitation on energy loss of a control valve with different pressure ratio conditions were numerically investigated by the validated numerical method based on the LES model. A dimension-less parameter called flow energy gradient was proposed to evaluate the rate of energy loss. Results show that the contribution of the energy loss is much greater in the region of valve seat throat where strong throttling and severe cavitation occur. The total energy loss in the control valve is composed by the throttling loss and the additional energy loss of cavitation, the latter leads to an increase in flow resistance and a decrease in flow capacity of the control valve. Moreover, the additional energy loss induced by cavitation increases with the severity of cavitation, which may result from the change of the liquid-vapor phase. (C) 2021 Elsevier Ltd. All rights reserved.
关键词Cavitation Energy loss Energy transfer Control valve Cavity LES
DOI10.1016/j.ijheatmasstransfer.2021.121331
收录类别SCIE ; SCOPUS ; EI
语种英语
WOS研究方向Thermodynamics ; Engineering ; Mechanics
WOS类目Thermodynamics ; Engineering, Mechanical ; Mechanics
WOS记录号WOS:000647617700035
出版者PERGAMON-ELSEVIER SCIENCE LTD
EI入藏号20211610237579
EI主题词Energy dissipation
EI分类号525.4 Energy Losses (industrial and residential) - 619.1.1 Pipe Accessories - 631.1.1 Liquid Dynamics - 914.1 Accidents and Accident Prevention - 921.6 Numerical Methods
来源库WOS
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被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符https://ir.lut.edu.cn/handle/2XXMBERH/148174
专题石油化工学院
通讯作者Wang, Zhenbo; Li, Shuxun
作者单位1.China Univ Petr East China, Coll New Energy, Qingdao 266580, Peoples R China;
2.Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Peoples R China;
3.Weihai Ocean Vocat Coll, Weihai 264300, Peoples R China
第一作者单位石油化工学院
通讯作者单位石油化工学院
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GB/T 7714
Xu, Xiaogang,Fang, Liang,Li, Anjun,et al. Numerical Analysis of the energy loss mechanism in cavitation flow of a control valve[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2021,174.
APA Xu, Xiaogang,Fang, Liang,Li, Anjun,Wang, Zhenbo,&Li, Shuxun.(2021).Numerical Analysis of the energy loss mechanism in cavitation flow of a control valve.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,174.
MLA Xu, Xiaogang,et al."Numerical Analysis of the energy loss mechanism in cavitation flow of a control valve".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 174(2021).
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