Characteristics of liquid splashing caused by fragment impacting a liquid-filled container
CHEN Junliang1, JIYANG Ziyi2, LI Xiangdong1, ZHOU Lanwei1
1. School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
2. School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Abstract:In order to investigate the characteristics of liquid spurt caused by fragment impacting the liquid-filled container, hydrodynamic ram and liquid transient spurt tests were carried out, and the process was numerically simulated by ANSYS/LS-DYNA. The rationality of the simulation model is verified, and the influence of the liquid spurt characteristics and the impact velocity of the fragments on it is analyzed. The results show that the pressure generated by the collapse of the cavitation in the main spurt is much greater than that in the low-frequency phase, and in the low-frequency phase, the cavity will expand and contract repeatedly, so the pressure pulse duration in the low-frequency phase, is longer than that in the main spurt; The collapse of the cavity is the direct cause of the liquid jet. The spurt flow is related to the liquid pressure at the penetration orifice, the shape of the penetration orifice, and the quality of the liquid near the penetration orifice. The initial spurt velocity of the liquid jet is not only related to the liquid pressure at the penetration orifice, but also to the velocity of the liquid near the penetration orifice.
陈焌良1,纪杨子燚2,李向东1,周兰伟1. 破片撞击充液容器引起的液体喷溅特性研究[J]. 振动与冲击, 2023, 42(19): 212-220.
CHEN Junliang1, JIYANG Ziyi2, LI Xiangdong1, ZHOU Lanwei1. Characteristics of liquid splashing caused by fragment impacting a liquid-filled container. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(19): 212-220.
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