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Citation:
　Siao Wang,Yunhua Jiang,Zhihui Zou,et al.Experimental Investigation of a Body Water Entry with a Water Jet Cavitator[J].Journal of Marine Science and Application,2025,(2):388-397.[doi:10.1007/s11804-024-00474-7]
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Experimental Investigation of a Body Water Entry with a Water Jet Cavitator

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Title:
Experimental Investigation of a Body Water Entry with a Water Jet Cavitator
Author(s):
Siao Wang1; 2;  Yunhua Jiang1; 3;  Zhihui Zou1;  Hanrui Wang1
Affilations:
Author(s):
Siao Wang1; 2;  Yunhua Jiang1; 3;  Zhihui Zou1;  Hanrui Wang1
1. School of Ocean Engineering and Technology, Sun Yat-sen University, & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519000, China;
2. China Merchants Marine and Offshore Research Institute Co., Shenzhen, 518000, China;
3. Key Laboratory of Comprehensive Observation of Polar Environment Sun Yat-sen University, Ministry of Education, Zhuhai, Guangdong, 519082, China
Keywords:
Water entry; Cavitation flow; Water jet
分类号:
-
DOI:
10.1007/s11804-024-00474-7
Abstract:
This paper reports an experimental investigation on the flow of a water entry cavity formed with a water jet cavitator. To investigate the formation characteristics, systematic water entry experiments were conducted in a water tank under different water jet rates, entry velocities, entry angles, and nozzle diameters. The formation mechanism of the water entry cavity was also analyzed. Results indicate that before the model impacts the water surface for water entry with a water jet cavitator, a gas bubble is created, and its width increases as the model approaches the water surface. Moreover, the length of the water jet gradually reduces to zero due to the increase in the static pressure of the water. The formation of the cavity is directly correlated with the location of the stagnation point moving downstream from the far field of the water jet to the exit of the water jet nozzle with the increasing entry depth. The dominant parameter is the momentum ratio of the water jet and quiescent water.

References:

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Memo

Memo:
Received date:2023-11-28;Accepted date:2024-3-20。
Foundation item:Supported by the National Natural Science Foundation of China (No. 52371344 and U22A2012), Guangdong Provincial Natural Science Foundation of China (No. 2024A1515012274 and 2021A1515011917), The Fundamental Research Funds for the Central Universities, Sun Yat-sen University (No. 22qntd0601), and the start-up funding received by Prof. Yunhua Jiang from Sun Yat-sen University.
Corresponding author:Yunhua Jiang,E-mail:jiangyh35@mail.sysu.edu.cn
Last Update: 2025-04-23