| 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)
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| Corresponding Author | Huang, Renfang([email protected]) |
| Source Publication | OCEAN ENGINEERING
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| 2023-02-01 | |
| Volume | 269Pages:19 |
| ISSN | 0029-8018 |
| Abstract | 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. |
| Keyword | E779A propeller Propeller wake Dynamic mode decomposition Reconstruction LES |
| DOI | 10.1016/j.oceaneng.2022.113532 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000923118100001 |
| WOS Keyword | MARINE PROPELLER ; SUBMARINE PROPELLER ; EDDY SIMULATION ; EVOLUTION ; VORTEX ; FLOW ; INSTABILITY ; CAVITATION ; MECHANISMS |
| WOS Research Area | Engineering ; Oceanography |
| WOS Subject | Engineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography |
| Funding Project | National Natural Science Foundation of China[52006232] ; National Natural Science Foundation of China[12122214] |
| Funding Organization | National Natural Science Foundation of China |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Huang, Renfang |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/91599 |
| Collection | 流固耦合系统力学重点实验室 |
| Recommended Citation 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.Rp_Au:Huang, Renfang |
| 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. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp2023Fa228.pdf（21792KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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