The Dynamic Characteristics of the Water Entry of a Lifeboat
The International Convention for the Safety of Life at Sea (SOLAS) stipulates that all ships must be equipped with lifesaving devices. The freefall lifeboat has the advantages of simple operation, fast release speed, and good safety performance, so it is widely used. The interaction between the hull...
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MDPI AG
2024-11-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/12/12/2175 |
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| author | Wenxin Yi Hui Liu Jiahe Zou Conghong Lu Wenqing Luo Bo Zhou |
| author_facet | Wenxin Yi Hui Liu Jiahe Zou Conghong Lu Wenqing Luo Bo Zhou |
| author_sort | Wenxin Yi |
| collection | DOAJ |
| description | The International Convention for the Safety of Life at Sea (SOLAS) stipulates that all ships must be equipped with lifesaving devices. The freefall lifeboat has the advantages of simple operation, fast release speed, and good safety performance, so it is widely used. The interaction between the hull and the water body of the freefall lifeboat during the water entry process is a complex fluid–structure interaction process that has great influence on the motion characteristics and structural force of the lifeboat. In order to improve the safety of lifeboats used in the lifesaving process, this paper establishes a 3D, full-scale model of a lifeboat and the fluid area, uses the ALE method to deal with the fluid–structure interaction problem, and numerically simulates the water entry of a lifeboat. Key information such as the hull motion trajectory, motion speed, and impact load are obtained, and three typical modes of lifeboat movement are summarized. At the same time, the influence of different skid angles, skid heights, and skid lengths on the lifeboat launch process is explored. The results show that increasing the angle, height, and length of the skid to a certain extent is conducive to the rapid escape of the lifeboat from a danger zone. The research results of this paper can provide a reference for the design of lifesaving systems for offshore floating facilities such as ships, which is of great significance for ensuring the safety of marine personnel. |
| format | Article |
| id | doaj-art-6eec7d0600a5481e842ecfc0309143a4 |
| institution | DOAJ |
| issn | 2077-1312 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj-art-6eec7d0600a5481e842ecfc0309143a42025-08-20T02:57:18ZengMDPI AGJournal of Marine Science and Engineering2077-13122024-11-011212217510.3390/jmse12122175The Dynamic Characteristics of the Water Entry of a LifeboatWenxin Yi0Hui Liu1Jiahe Zou2Conghong Lu3Wenqing Luo4Bo Zhou5State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, School of Naval Architecture Engineering, Dalian University of Technology, Dalian 116024, ChinaState Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, School of Naval Architecture Engineering, Dalian University of Technology, Dalian 116024, ChinaState Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, School of Naval Architecture Engineering, Dalian University of Technology, Dalian 116024, ChinaState Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, School of Naval Architecture Engineering, Dalian University of Technology, Dalian 116024, ChinaDalian Cosco Khi Ship Engineering Co., Ltd., Dalian 116024, ChinaState Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, School of Naval Architecture Engineering, Dalian University of Technology, Dalian 116024, ChinaThe International Convention for the Safety of Life at Sea (SOLAS) stipulates that all ships must be equipped with lifesaving devices. The freefall lifeboat has the advantages of simple operation, fast release speed, and good safety performance, so it is widely used. The interaction between the hull and the water body of the freefall lifeboat during the water entry process is a complex fluid–structure interaction process that has great influence on the motion characteristics and structural force of the lifeboat. In order to improve the safety of lifeboats used in the lifesaving process, this paper establishes a 3D, full-scale model of a lifeboat and the fluid area, uses the ALE method to deal with the fluid–structure interaction problem, and numerically simulates the water entry of a lifeboat. Key information such as the hull motion trajectory, motion speed, and impact load are obtained, and three typical modes of lifeboat movement are summarized. At the same time, the influence of different skid angles, skid heights, and skid lengths on the lifeboat launch process is explored. The results show that increasing the angle, height, and length of the skid to a certain extent is conducive to the rapid escape of the lifeboat from a danger zone. The research results of this paper can provide a reference for the design of lifesaving systems for offshore floating facilities such as ships, which is of great significance for ensuring the safety of marine personnel.https://www.mdpi.com/2077-1312/12/12/2175water entrylifeboatfluid–structure interactiondynamic characteristicsALE |
| spellingShingle | Wenxin Yi Hui Liu Jiahe Zou Conghong Lu Wenqing Luo Bo Zhou The Dynamic Characteristics of the Water Entry of a Lifeboat Journal of Marine Science and Engineering water entry lifeboat fluid–structure interaction dynamic characteristics ALE |
| title | The Dynamic Characteristics of the Water Entry of a Lifeboat |
| title_full | The Dynamic Characteristics of the Water Entry of a Lifeboat |
| title_fullStr | The Dynamic Characteristics of the Water Entry of a Lifeboat |
| title_full_unstemmed | The Dynamic Characteristics of the Water Entry of a Lifeboat |
| title_short | The Dynamic Characteristics of the Water Entry of a Lifeboat |
| title_sort | dynamic characteristics of the water entry of a lifeboat |
| topic | water entry lifeboat fluid–structure interaction dynamic characteristics ALE |
| url | https://www.mdpi.com/2077-1312/12/12/2175 |
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