Study on the cavitation effects induced by the interaction between underwater blast and various boundaries

被引：21

作者：

Jin, Z. ^{[1
]}

Yin, C. ^{[2
]}

Chen, Y. ^{[1
]}

Cui, Y. D. ^{[3
]}

Khoo, B. C. ^{[3
]}

Jiao, S. ^{[1
]}

Hua, H. ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Mech Syst & Vibrat, Shanghai 200240, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Naval Architecture & Ocean Engn, Wuhan, Peoples R China

[3] Natl Univ Singapore, Singapore 119260, Singapore

来源：

OCEAN ENGINEERING | 2021年 / 222卷

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Fluid-structure interaction; Underwater explosion; Cavitation; Shock wave;

D O I：

10.1016/j.oceaneng.2021.108596

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

The load of cavitation collapse is one of the main input loads to the structure subjected to underwater explosion. The cavitation effects near different boundaries are of particular importance in understanding the load mechanisms and designing the protective structures. In present study, a numerical model that couples a Runge Kutta Discontinuous Galerkin method, a finite element method and an isentropic one-fluid cavitation model is developed to study the cavitation effects induced by underwater explosion near different boundaries. The boundaries of a rigid plate, a steel plate, a rubber coated plate and a foam coated plate are investigated in detail, after validating the coupled numerical model by a case of 1D cavitating flow in an open tube, an experiment of a water-backed plate subjected to water blast and an experiment of underwater explosion near a circular plate. The evolutions of the cavitation region, the pressure profile near the structure and the responses of the structure are comprehensively discussed. The results are beneficial for guiding the design of the protective structures.

引用

页数：14

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