Similarity relations of underwater explosion in centrifuge and pressurizing vessels

被引：0
|
作者：
Song G. [1 ]
Long Y. [1 ]
Zhong M. [1 ]
Wang M. [1 ]
Wu J. [1 ]
机构：
[1] College of Field Engineering, Army Engineering University, Nanjing, 210007, Jiangsu
来源：
Baozha Yu Chongji/Explosion and Shock Waves | 2019年 / 39卷 / 02期
关键词：
Centrifugal model; LS-DYNA; Model test; Pressurized model; Underwater explosion;
D O I：
10.11883/bzycj-2017-0321
中图分类号：
学科分类号：
摘要：
The collective effect of underwater explosion shock wave and bubble pulsation does not meet the traditional geometric similarity relation, and the scaled model test must be carried out in a closed pressurized tank or centrifuge apparatus. Through the dimensional analysis and π theorem, the similarity theory of the model tests was deduced. The prototype condition and model conditions with the scaled ratio of 1/20 and 1/30 were simulated based on LS-DYNA, which shows the similarity relations and application scope of the pressurized model and centrifugal model. The shock wave, bubble radius and bubble period can meet the similarity relations but the bubble motion and jet can not meet the similarity relations in the pressurized model; and the shock wave and bubble pulsation almost meet the similarity relations in the centrifugal model. © 2019, Editorial Staff of EXPLOSION AND SHOCK WAVES. All right reserved.
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