摘要
为研究双爆源气泡与水面的相互作用过程,开展了水箱内水下爆炸实验,采用两台高速录像机同步拍摄了气泡和水幕形态变化过程,分析了双爆源气泡和水幕运动的关联,对比了同药量、同比例深度下单双爆源气泡及水幕的差异.研究结果表明:双爆源气泡先后经历单气泡膨胀及相互融合,融合气泡膨胀、收缩-溃灭等阶段,水幕经历"水冢、水柱和水射流"3种形态的变化;双爆源融合气泡横向最大半径较单爆源气泡增大8.7%,膨胀至最大半径的时间基本一致;双爆源炸形成的水幕呈幂指数增高,炸药起爆40 ms后,相同时刻双爆源水幕比单爆源高10%以上.
In order to study the interaction process between double explosive bubbles and water surface,an underwater explosion experiment in the water tank was conducted.Changes of double explosive bubbles and water curtain were photographed synchronously by two high-speed cameras.The correlation between double explosive bubbles and water curtain was analyzed,and differences between bubble and water curtain with single and double explosive under the same charge and dimensionless depth were compared.The results show that double explosive bubbles undergo the process of single bubble expansion,bubble fusion,fused bubble expansion,fusion bubble shrinkage and collapse.The changes of water curtain take three forms:water mound,water column and water jet.The maximum transverse radius of the fused bubble is 8.7%larger than that of the single bubble,the time of bubble expansion to maximum radius is the same.The water curtain formed by single and double explosive increases exponentially,and the water curtain of double explosive is over 10%higher than that of single explosive after the explosive detonates for 40 ms.
作者
李梅
马宇宇
蒋建伟
郗莉萍
(LI Mei;MA Yu-yu;JIANGJian-wei;XILi-ping(State Key aboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing100081,China)
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2019年第12期1219-1224,共6页
Transactions of Beijing Institute of Technology
基金
国家自然科学基金青年基金资助项目(11502020)
关键词
水下爆炸
双爆炸气泡
水幕
相互作用
underwater explosion
double explosive bubbles
water curtain
interaction
作者简介
李梅(1984-),女,博士,讲师,E-mail:pulmmay@bit.edu.cn。
