Experimental study on the characteristics and influencing factors of liquid spurt caused by hydrodynamic ram

被引：1
作者：
Chen A. [1 ]
Li X. [1 ]
Zhou L. [1 ]
Ji Y. [1 ]
机构：
[1] School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing
来源：
Guofang Keji Daxue Xuebao/Journal of National University of Defense Technology | 2021年 / 43卷 / 05期
关键词：
High-velocity impact; Hydrodynamic ram; Liquid spurt; Liquid-filled container;
D O I：
10.11887/j.cn.202105017
中图分类号：
学科分类号：
摘要：
In order to study the characteristics of liquid spurt caused by the hydrodynamic ram and its influencing factors, experiments in which high-velocity fragment impacts the liquid-filled container have been conducted. The characteristics of cavity oscillation in the container, the pressure distribution and the liquid spurt outside the container were tested. Experimental results show that there are two different phases of the liquid spurt. The first phase occurs within 400~700 μs after the cavity grows to its maximum volume and the liquid spurt has an arrow-shaped head. In the second phase, a number of similar pulsating spurt occurs, and each single pulsating occurs after each time of the cavity collapse. The liquid spurt has an umbrella-shaped head with a linear-shape tail. The pressure in the liquid and the shape of penetration orifice affects the velocity of the liquid spurt. The relative velocity of liquid spurt decreases in inverse proportion with the increase of the fragment impact velocity. The velocity of the liquid spurt fluctuates in the motivation. The velocity of the liquid spurt decreases and the location of the inflection point of the velocity can be closer to the penetration orifice with the increase of the number of spurts. © 2021, NUDT Press. All right reserved.
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页码：144 / 152
页数：8
相关论文
共 32 条
  • [1] JI Yangziyi, LI Xiangdong, ZHOU Lanwei, Et al., Experimental study on hydrodynamic ram generated by high velocity fragment impacting fluid-filled container, Journal of National University of Defense Technology, 41, 3, pp. 70-76, (2019)
  • [2] MA Liying, LI Xiangdong, ZHOU Lanwei, Et al., Characteristics of draging period cavity formation in liquid filling container by fragment impacting, Explosion and Shock Waves, 38, 6, pp. 1412-1418, (2018)
  • [3] JI Y, LI X D, ZHOU L W, Et al., Experimental and numerical study on the cumulative damage of water-filled containers impacted by two projectiles, Thin-Walled Structures, 135, pp. 45-64, (2019)
  • [4] LAN Xiaoying, LI Xiangdong, ZHOU Lanwei, Et al., Pressure distribution inside liquid during a liquid-filled vessel impacted by double-fragment, Journal of Vibration and Shock, 38, 19, pp. 191-197, (2019)
  • [5] JI Yangziyi, LI Xiangdong, ZHOU Lanwei, Et al., Review of study on hydrodynamic ram effect generated due to high-velocity penetrator impacting fluid-filled container, Journal of Vibration and Shock, 38, 19, pp. 242-252, (2019)
  • [6] MA Liying, LI Xiangdong, ZHOU Lanwei, Et al., Study on wall damage of vessel in high-speed fragment impact liquid-filled vessel, Explosion and Shock Waves, 39, 2, pp. 56-67, (2019)
  • [7] LECYSYN N, BONY-DANDRIEUX A, APRIN L, Et al., Experimental study of hydraulic ram effects on a liquid storage tank: analysis of overpressure and cavitation induced by a high-speed projectile, Journal of Hazardous Materials, 178, 1, pp. 635-643, (2010)
  • [8] BALL R E., Aircraft fuel tank vulnerability to hydraulic ram: modification of the Northrop finite element, computer code BR-1 to include fluid-structure interaction
  • [9] theory and user's manual for BR-1HR, (1974)
  • [10] LEE M, LONGORIA R G, WILSON D E., Cavity dynamics in high-speed water entry, Physics of Fluids, 9, 3, pp. 540-550, (1997)
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