Dynamic mode decomposition and reconstruction of the transient propeller wake under a light loading condition

doi:10.1016/j.oceaneng.2022.113532

IMECH-IR > 流固耦合系统力学重点实验室

	Dynamic mode decomposition and reconstruction of the transient propeller wake under a light loading condition
	Zhi, Yuchang; Qiu RD(丘润荻); Huang RF(黄仁芳); Wang YW(王一伟)
通讯作者	Huang, Renfang(hrenfang@imech.ac.cn)
发表期刊	OCEAN ENGINEERING
	2023-02-01
卷号	269 页码:19
ISSN	0029-8018
摘要	This research aims to extend our understanding of propeller wake dynamics under a light loading condition, thereby laying a foundation for design optimization and flow control of the propeller. Dynamic mode decom-position (DMD) and reconstruction are used to analyze the transient vortical wake structures obtained by large eddy simulation. The propeller wake includes stable tip and hub vortices without interacting evolution at the light loading condition, and elliptical instabilities are observed downstream of the tip vortices. DMD describes the most energetic modes and the corresponding dominant frequencies are the blade passing frequency and its multiples. The coherent structures identified via DMD are primarily associated with the ordered convection of the tip vortices and have little correlation with the hub vortices. Additionally, the propeller wake flow is reconstructed using the first four DMD modes, and the primary wake features are well restored with a maximum reconstructed error of 7.98%. This demonstrates that the flow-field reconstruction based on the DMD reduced-order model is promising for predicting the propeller wake and controlling the propeller operation.
关键词	E779A propeller Propeller wake Dynamic mode decomposition Reconstruction LES
DOI	10.1016/j.oceaneng.2022.113532
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000923118100001
关键词[WOS]	MARINE PROPELLER ; SUBMARINE PROPELLER ; EDDY SIMULATION ; EVOLUTION ; VORTEX ; FLOW ; INSTABILITY ; CAVITATION ; MECHANISMS
WOS研究方向	Engineering ; Oceanography
WOS类目	Engineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography
资助项目	National Natural Science Foundation of China[52006232] ; National Natural Science Foundation of China[12122214]
项目资助者	National Natural Science Foundation of China
论文分区	一类
力学所作者排名	1
RpAuthor	Huang, Renfang
引用统计	被引频次：7[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/91599
专题	流固耦合系统力学重点实验室
推荐引用方式 GB/T 7714	Zhi, Yuchang,Qiu RD,Huang RF,et al. Dynamic mode decomposition and reconstruction of the transient propeller wake under a light loading condition[J]. OCEAN ENGINEERING,2023,269:19.
APA	Zhi, Yuchang,丘润荻,黄仁芳,&王一伟.(2023).Dynamic mode decomposition and reconstruction of the transient propeller wake under a light loading condition.OCEAN ENGINEERING,269,19.
MLA	Zhi, Yuchang,et al."Dynamic mode decomposition and reconstruction of the transient propeller wake under a light loading condition".OCEAN ENGINEERING 269(2023):19.

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