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液滴对爆炸冲击波的衰减作用
引用本文:刘贵兵,侯海量,朱锡,张国栋.液滴对爆炸冲击波的衰减作用[J].爆炸与冲击,2017,37(5):844-852.
作者姓名:刘贵兵  侯海量  朱锡  张国栋
作者单位:海军工程大学舰船工程系,湖北武汉430033;中国人民解放军92941部队,辽宁葫芦岛125001;海军工程大学舰船工程系,湖北武汉,430033
摘    要:为分析液滴对舰船舱内爆炸冲击波的耗散与衰减作用,通过有限元分析方法,建立冲击波作用于不同尺寸单个液滴和多排液滴的模型,分析冲击波与单个及多个液滴的作用过程及液滴形态变化,对冲击波衰减规律进行分析总结。得到结论如下:单个液滴模型中,小液滴破碎更迅速,破碎的规律性强;大液滴抛撒现象发生较早,抛撒出的小液滴数目多,但整体变化规律性偏差;不同尺寸单个液滴对冲击波有一定的衰减作用,衰减率随液滴尺寸增大而增大,线性规律较明显;成排液滴对冲击波有明显的衰减作用,相同液滴密度下衰减率随着液滴数量的增多而增大,呈现明显的线性特性。

关 键 词:冲击波  液滴破碎  比冲量  环流
收稿时间:2016-01-25

Attenuation of shock wave passing through liquid droplets
Liu Guibing,Hou Hailiang,Zhu Xi,Zhang Guodong.Attenuation of shock wave passing through liquid droplets[J].Explosion and Shock Waves,2017,37(5):844-852.
Authors:Liu Guibing  Hou Hailiang  Zhu Xi  Zhang Guodong
Institution:1.Department of Naval Architecture Engineering, Naval University of Engineering, Wuhan 430033, Hubei, China2.Unit 92941 of Chinese People's Liberation Army, Huludao 125001, Liaoning, China
Abstract:To characterize the function of water droplets in the restraining and attenuation of the explosive shock wave inside of a cabin,we built several models of a sing layer in z-axis with different sizes of a single droplet and rows of droplets using numerical simulation,analyzed the shock wave interacting with them,observed the interaction process and the change of the droplet forms,summarized the shock wave's attenuation regularities,and obtained some conclusions.The results show that,in the single droplet model,smaller droplets were broken more rapidly and regularly,while bigger droplets tend to break out little droplets more and earlier but less regularly on the whole;that single droplets of different sizes had an effect of attenuation on the shock wave,with an obvious correlation between the increase of the droplet size and that of the attenuation;and that the rows had the most obvious effect of attenuation on the shock wave,with a linear relation between the increase of the droplet number and that of attenuation effect at the same droplet density.
Keywords:shock wave  droplet broken  specific impulse  vortex pair
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