PMT水下内爆冲击波强度与传播特性研究  

Shock wave intensity and propagation features of a PMT's underwater implosion

作　　者：金键[1] 侯海量[1] 陈鹏宇[1] 朱锡[1] 吴林杰[1] 何苗[2] 王天穹 JIN Jian;HOU Hailiang;CHEN Pengyu;ZHU Xi;WU Linjie;HE Miao;WANG Tianqiong(Department of Naval Architecture Engineering, Naval University of Engineering, Wuhan 430033, China;Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China)

机构地区：[1]海军工程大学舰船工程系,武汉430033 [2]中国科学院高能物理研究所,北京100049

出　　处：《振动与冲击》2018年第13期100-104,122,共6页Journal of Vibration and Shock

基　　金：国家自然科学基金项目(51479204;51409253;51679246)

摘　　要：为研究光电倍增管(PMT)水下内爆后产生的冲击波强度及其传播特性,首先以气泡动力学、气泡破裂动力学理论为基础分析了球形气泡溃灭时长与气泡破裂回弹阶段冲击波传播特性,指出了真空容器水下内爆与气泡溃灭物理过程的相似性和特殊性。建立了水下气泡溃灭数值仿真计算模型,通过与文献实验结果和理论结果的对比验证了数值计算方法的可行性。最后以实际工作环境为基础对PMT水下内爆过程进行了数值模拟,分析了PMT外形尺寸对冲击波传播特性的影响,确定了PMT水下内爆的冲击波强度,为PMT防爆工作提供了针对性的参考。Shock wave intensity and propagation features of a photo-multiplier tube（ PMT）＇s underwater implosion were studied.Firstly,based on the theory of bubble dynamics and bubble rupture dynamics,a spherical bubble collapse＇s time and shock wave propagation features in bubble burst rebound stage were analyzed,it was found that the physical process of a vacuum vessel＇s underwater implosion is similar to that of an underwater bubble collapse.Secondly,a numerical simulation model for an underwater bubble collapse was built.Its feasibility was verified through comparing the results of simulation with this model with those of tests and theoretical calculation for some examples published in literature.Finally,the numerical simulation was conducted for a PMT＇s underwater implosion based on the actual working environment.The influence of a PMT＇s external shape size on the shock wave propagation features was analyzed,the shock wave intensity of PMT＇s underwater implosion was determined.The results provided a reference for preventing PMT implosion.

关 键 词：PMT 水下内爆 冲击波 数值仿真 

分 类 号：O381[理学—流体力学]