Numerical analysis of cavitation and impact load characteristics of supercavitating vehicle entering water at high speed

被引：0

作者：

Yu Y. ^{[1
,2
]}

Shi Y. ^{[1
,2
]}

Pan G. ^{[1
,2
]}

Che P. ^{[1
,2
]}

机构：

[1] School of Marine Science and Technology, Northwestern Polytechnical University, Xi′an

[2] Key Laboratory of Unmanned Underwater Vehicle, Northwestern Polytechnical University, Xi′an

来源：

Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University | 2022年 / 40卷 / 03期

关键词：

cavitation evolution; high speed water entry; impact load; simulation; supercavitating vehicle;

D O I：

10.1051/jnwpu/20224030584

中图分类号：

学科分类号：

摘要：

In order to obtain the influence of water entry angle and speed on the cavitation and impact load characteristics of supercavitating vehicle, a high-speed water entry numerical model of supercavitating vehicle based on VOF model is established, and the accuracy of the model is verified by relative experiments. Through simulation, the cavitation evolution process, cavitation size, impact load change and surface pressure distribution of supercavitating vehicle entering water at different angles and velocities are obtained and compared. The results show that with the increase of water entry velocity, the depth of cavitation closing position increases, the cavitation size increases, the peak value of axial load increases and the surface pressure of vehicle increases; With the increase of water entry angle, the bubble closing time remains unchanged, the bubble size decreases, the axial load peak increases, and the asymmetry of pressure distribution decreases. The pressure on the upstream surface of the cavitator increases along the radius to the center of the circle, but the asymmetry decreases when it enters the water obliquely. ©2022 Journal of Northwestern Polytechnical University.

引用

页码：584 / 591

页数：7

共 11 条

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