摘要
采用数值方法研究海底附近的潜艇与其周围爆炸气泡的相互作用,用"镜像法"模拟海底边界的影响。随着距离比δ的减小,气泡出现了三种形态演化,这为潜艇结构的毁伤判定提供了参考。引入危险攻角的概念,证明了潜艇的危险攻角将因海底的存在而被放大。同时还发现,近海底爆炸气泡对潜艇施加的总纵弯矩比自由场气泡要小。
By using numerical methods, this paper analyzed the interaction between a grounding bubble and a submarine staying just above the sea floor. An image method was adopted to simulate the boundary effect. A distance ratio δ was defined and 3 deformation types of the grounding bubble were observed with the decrease of δ.As a general consideration, the concept of ＂attack angle＂θ was presented. It was proved that θ would be magnified with the existence of the sea floor. It was shown that the overall bending moment of a submarine caused by a grounding bubble is smaller than that by the bubble in free fields.
出处
《中国造船》
EI
CSCD
北大核心
2014年第3期25-35,共11页
Shipbuilding of China
基金
国家安全重大基础研究项目(No.613157)
哈尔滨市科技创新人才专项基金资助
黑龙江省博士后科研启动金资助(LBH-Q11136)
关键词
潜艇
水下爆炸
爆炸气泡
边界元法
镜像法
submarine
underwater explosion
grounding bubble
BEM
image method
