Dynamic Characteristics and Effect on Thrust of Jet Tail Vortex Ring for Pump Jet Propulsion

doi:10.3389/fenrg.2022.900050

	Dynamic Characteristics and Effect on Thrust of Jet Tail Vortex Ring for Pump Jet Propulsion
	Han, Wei1 ; Li, Zhixiong 1; Li, Rennian1 ; Feng, Huimin 1; Nan, Lingbo 1,2; Xu, Jun1 ; Xiao, Mingzhen 1
	2022-05-27
发表期刊	FRONTIERS IN ENERGY RESEARCH
ISSN	2296-598X
卷号	10
摘要	When a pump is propelled by a propeller, the nozzle flooding of the jet wake area will produce a turbulent quasi-sequence structure and have a certain impact on the outflow field structure and thrust characteristics of the water jet propulsion pump. In this paper, a method that combined numerical simulation with vortex dynamics is adopted, which analyzes the dynamic characteristics and influence on the thrust characteristics of the water jet propulsion pump. A large eddy simulation turbulence model and a dimensionless water jet propulsion pump velocity coefficient were used to reveal flow structure and relation, with the pump operation parameters of the wake vortex ring. The thrust with a trailing vortex ring is 7.0% higher than that without a trailing vortex ring. Vortex dynamics and mathematical statistics are combined to quantitatively analyze the dynamic characteristics of the jet tail vortex ring. Finally, the formation time of the vortex ring is obtained in exponential relation with dimensionless transmission velocity and vorticity coefficient, which has nonlinear relation with vortex intensity coefficient and helicity coefficient. BP Neural Network combined with the LM algorithm is used to establish the mathematical relationship between the thrust and the physical characteristic parameters of the vortex ring.
关键词	pump jet wake vortex ring dynamic characteristics thrust neural networks
DOI	10.3389/fenrg.2022.900050
收录类别	SCIE ; EI
语种	英语
WOS研究方向	Energy & Fuels
WOS类目	Energy & Fuels
WOS记录号	WOS:000811336300001
出版者	FRONTIERS MEDIA SA
EI入藏号	20222612272577
EI主题词	Neural networks
EI分类号	618.2 Pumps631 Fluid Flow631.1 Fluid Flow, General921 Mathematics921.6 Numerical Methods922.2 Mathematical Statistics
来源库	WOS
引用统计	被引频次：1[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/158907
专题	能源与动力工程学院后勤管理处
通讯作者	Li, Zhixiong; Nan, Lingbo
作者单位	1.Lanzhou Univ Technol, Coll Energy & Power Engn, Lanzhou, Peoples R China; 2.Northwest A&F Univ, Coll Water Resources & Architectural Engn, Yangling, Peoples R China
第一作者单位	能源与动力工程学院
通讯作者单位	能源与动力工程学院
第一作者的第一单位	能源与动力工程学院
推荐引用方式 GB/T 7714	Han, Wei,Li, Zhixiong,Li, Rennian,et al. Dynamic Characteristics and Effect on Thrust of Jet Tail Vortex Ring for Pump Jet Propulsion[J]. FRONTIERS IN ENERGY RESEARCH,2022,10.
APA	Han, Wei.,Li, Zhixiong.,Li, Rennian.,Feng, Huimin.,Nan, Lingbo.,...&Xiao, Mingzhen.(2022).Dynamic Characteristics and Effect on Thrust of Jet Tail Vortex Ring for Pump Jet Propulsion.FRONTIERS IN ENERGY RESEARCH,10.
MLA	Han, Wei,et al."Dynamic Characteristics and Effect on Thrust of Jet Tail Vortex Ring for Pump Jet Propulsion".FRONTIERS IN ENERGY RESEARCH 10(2022).