自由水面和刚性水底联合作用下水下爆炸气泡上浮运动特性研究

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (12) : 1-7.

论文

盛振新1,2，刘建湖1,2，王海坤1,2，张永坤3，李立业1,2

作者信息 +

A study on migration characteristics for underwater explosion bubble under combined action of a free surface and a rigid bottom

SHENG Zhenxin1,2，LIU Jianhu1,2，WANG Haikun1,2，ZHANG Yongkun3，LI Liye1,2

Author information +

文章历史 +

摘要

浅水爆炸时，气泡运动同时受到自由水面和刚性水底的联合作用，现有的上浮位移理论计算模型并不适用。本文建立了自由水面和刚性水底联合作用下水下爆炸气泡上浮位移理论模型，同时，在爆炸水池内开展了TNT（trinitrotoluene）装药的气泡上浮试验，采用高速相机拍摄了气泡运动的演化过程，对图像进行智能化识别处理后得到了气泡上浮位移规律。结果表明，TNT装药气泡上浮的试验结果与理论模型计算结果的相对偏差范围为-11.7%~8.2%，理论模型精度满足工程应用要求，可为水下爆炸对舰船的毁伤评估提供技术支撑。

Abstract

During shallow water explosion, the bubble motion is subject to the combined action of free surface and rigid bottom, therefore the existing theoretical models for bubble migration are not applicable. In this paper, the theoretical model of bubble migration for underwater explosion under the combined action of free surface and rigid bottom was established. At the same time, the underwater explosion experiment of TNT charge was carried out, and the evolution process of bubble motion was photographed with a high-speed camera, then the bubble migration law was obtained after intelligent processing. The results show that: the deviation of bubble migration between the theoretical calculation results and test experimental results were -11.7%~8.2%. The accuracy of the theoretical model could meet the requirement of engineering application, which could provide technical support for the damage assessment for ship structure.

导出引用

盛振新1,2，刘建湖1,2，王海坤1,2，张永坤3，李立业1,2. 自由水面和刚性水底联合作用下水下爆炸气泡上浮运动特性研究[J]. 振动与冲击, 2023, 42(12): 1-7

SHENG Zhenxin1,2，LIU Jianhu1,2，WANG Haikun1,2，ZHANG Yongkun3，LI Liye1,2. A study on migration characteristics for underwater explosion bubble under combined action of a free surface and a rigid bottom[J]. Journal of Vibration and Shock, 2023, 42(12): 1-7

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