%0 Journal Article
%T Underwater Explosion Bubble Pulsation Measurement and Analysis<br>水下爆炸气泡脉动测量及分析
%A ZHANG Ying
%A ZHAO Sheng-wei
%A WANG Zhan-jiang
%A ZHOU Gang
%A <br>张颖
%A 赵生伟
%A 王占江
%A 周刚
%J 实验力学
%D 2011
%I 
%X Bubble demolition effect induced by underwater explosion loads is one of the most important lethality of naval weapons. In order to study bubble pulsation of undwater explosion, a set of small scaled experimental system was establised, a series of underwater explosion (Explosion equivalent is 0.125g, 1.0g, 3.375g and 8.0g TNT, respectively) tests were carried out in water tank. Spherical PETN chargers were adopted and center ignition was used to produce spherical symmetrical bubble and shock waves. High-speed camera system was used to capture the bubble impulsation and pressure gauges were mounted to measure the pressure of shock waves. Clear images of underwater explosion bubble pulsation and pressure curves of shock waves and bubble pulsation were obtained. Bubble diameter and its pulsation period were analyzed, baesd on the interpretation of digital images recorded by high-speed camera system. Otherwise, bubble pulsation period was measured from shock wave curves, bubble pulsation related parameters were compared ans analyzed. Results show that the bubble diameter measured from digital images are close to empirical formula. Results also show that the bubble pulsation period measured from digital images is in agreement with that measured from shock wave curves and that calculated by empirical formula. So the experimental technique presented in this paper is safe, economical and reliable. The measured parameters of bubble pulsation are accurate and useful for studying underwater explosion bubble pulsation.
%K underwater explosion
%K bubble pulsation
%K high-speed camera system<br>水下爆炸
%K 气泡脉动
%K 高速摄像系统
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=49067A0A0D864088C06A84AACB51A5B2&aid=29FA679B61699A52869B58078BF3D2C9&yid=9377ED8094509821&vid=96C778EE049EE47D&iid=CA4FD0336C81A37A&sid=5D71B28100102720&eid=AA76E167F386B6B3&journal_id=1001-4888&journal_name=实验力学&referenced_num=0&reference_num=11