Numerical Analysis of the energy loss mechanism in cavitation flow of a control valve

doi:10.1016/j.ijheatmasstransfer.2021.121331

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	Numerical Analysis of the energy loss mechanism in cavitation flow of a control valve
	Xu, Xiaogang 1,2; Fang, Liang 1,3; Li, Anjun 1; Wang, Zhenbo 1; Li, Shuxun 2
刊名	INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
	2021
卷号	174
关键词	Cavitation Energy loss Energy transfer Control valve Cavity LES
ISSN号	0017-9310
DOI	10.1016/j.ijheatmasstransfer.2021.121331
英文摘要	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.
WOS研究方向	Thermodynamics ; Engineering ; Mechanics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000647617700035
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148174]
专题	石油化工学院
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
推荐引用方式 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).