Dynamic mode decomposition and reconstruction of the transient propeller wake under a light loading condition
文献类型：期刊论文
| 作者 | Zhi, Yuchang; Qiu RD(丘润荻); Huang RF(黄仁芳); Wang YW(王一伟)
|
| 刊名 | OCEAN ENGINEERING
 |
| 出版日期 | 2023-02-01 |
| 卷号 | 269页码:19 |
| 关键词 | E779A propeller Propeller wake Dynamic mode decomposition Reconstruction LES |
| ISSN号 | 0029-8018 |
| DOI | 10.1016/j.oceaneng.2022.113532 |
| 通讯作者 | Huang, Renfang(hrenfang@imech.ac.cn) |
| 英文摘要 | 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. |
| 分类号 | 一类 |
| WOS关键词 | MARINE PROPELLER ; SUBMARINE PROPELLER ; EDDY SIMULATION ; EVOLUTION ; VORTEX ; FLOW ; INSTABILITY ; CAVITATION ; MECHANISMS |
| 资助项目 | National Natural Science Foundation of China[52006232] ; National Natural Science Foundation of China[12122214] |
| WOS研究方向 | Engineering ; Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:000923118100001 |
| 资助机构 | National Natural Science Foundation of China |
| 其他责任者 | Huang, Renfang |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/91598]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 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. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。