铅飞层中斜冲击波对碰马赫反射行为实验研究
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摘要
采用线阵多普勒光纤探针测速技术(Doppler pins system,DPS)和高速光电分幅相机照相两种精密诊断技术,对铅飞层中斜冲击波对碰后的反射行为进行了观测。获得了飞层对碰部位速度-时间历史曲线和凸起形貌演化图像,给出了凸起轮廓发展演化过程、压力分布等实验数据和信息。结合冲击波反射理论,对铅飞层对碰区动力学现象进行了分析和解释,证实铅飞层中斜冲击波对碰后发生了马赫反射。
Using the line-array DPS(Doppler pins system) test technique and a high-speed photoelectric frame camera, we diagnosed the shock wave reflection behavior induced by collision of oblique shock waves in a lead plate, accurately measured the velocity history and captured the bulge evolution images of the collision region. By processing the velocity curves, we obtained such experimental informations as the velocity variation, pressure distribution and plate surface damage. Furthermore, Combining the theory of shock wave reflection, we analyzed and explicated the dynamic behavior of the lead plate's collision region,concluding that it was Mach reflection that occurred after two oblique shock waves collided.
Using the line-array DPS(Doppler pins system) test technique and a high-speed photoelectric frame camera, we diagnosed the shock wave reflection behavior induced by collision of oblique shock waves in a lead plate, accurately measured the velocity history and captured the bulge evolution images of the collision region. By processing the velocity curves, we obtained such experimental informations as the velocity variation, pressure distribution and plate surface damage. Furthermore, Combining the theory of shock wave reflection, we analyzed and explicated the dynamic behavior of the lead plate's collision region,concluding that it was Mach reflection that occurred after two oblique shock waves collided.
引文
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[2]杨旸,姜宗林,胡宗民.激波反射现象的研究进展[J].力学进展,2012,42(2):141-161.YANG Yang,JIANG Zonglin,HU Zongmin.Advances in shock wave reflection phenomena[J].Advances in Mechanics,2012,42(2):141-161.
[3]BROWN J L,RAVICHANDRAN G.Analysis of oblique shock waves in solids using shock polars[J].Shock Waves,2014,24(4):403-413.
[4]陈大伟,秦承森,王裴,等.凝聚介质中斜激波的反射[J].计算物理,2011,28(6):791-796.CHEN Dawei,QIN Chengsen,WANG Pei,et al.Oblique shock wave reflection in condensed matter[J].Chinese Journal of Computational Physics,2011,28(6):791-796.
[5]经福谦.实验物态方程导引[M].2版.北京:科学出版社,1999.
[6]张崇玉,胡海波,王翔.平面金属飞层对碰区速度剖面的精密测试[J].爆炸与冲击,2016,36(4):557-561.ZHANG Chongyu,HU Haibo,WANG Xiang.Precision test of velocity profile in collision region of plane metal flying layer[J].Explosion and Shock Waves,2016,36(4):557-561.
[7]BUTTLER W T,ORO D M,OLSON R T,et al.Second shock ejecta measurements with an explosively driven two-shockwave drive[J].Journal of Applied Physics,2014,116:103519.
[8]张崇玉,胡海波,李庆忠,等.爆轰波对碰驱动下平面铅飞层对碰区动载行为实验研究[J].高压物理学报,2009,23(4):283-287.ZHANG Chongyu,HU Haibo,LI Qingzhong,et al.Experimental study on dynamic behavior of lead plate driven by two headon colliding detonation waves[J].Chinese Journal of High Pressure Physics,2009,23(4):283-287.
[9]刘军,付峥,冯其京,等.爆轰驱动金属飞层对碰凸起和微射流形成的数值模拟研究[J].物理学报,2015,64(23):234701.LIU Jun,FU Zheng,FENG Qijing,et al.Simulation study of the colliding bulge and surface micro-jet of metal flyers driven by detonation[J].Acta Physica Sinica,2015,64(23):234701.