摘要
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.
出处
《哈尔滨工程大学学报(英文版)》
2025年第2期388-397,共10页
Journal of Marine Science and Application
基金
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)
the start-up funding received by Prof.Yunhua Jiang from Sun Yat-sen University.
作者简介
Corresponding author:Yunhua Jiang,jiangyh35@mail.sysu.edu.cn。
