Numerical Simulation of the Expansion Characteristics of Plasma Jet in Gradually Expanding Liquid-filled Chamber

被引：0

作者：

Jia, Shuxiang ^{[1
]}

Yu, Yonggang ^{[1
]}

机构：

[1] School of Energy and Power Engineering, Nanjing University of Science and Technology, Jiangsu, Nanjing

来源：

Binggong Xuebao/Acta Armamentarii | 2025年 / 46卷 / 04期

关键词：

gradual boundary expansion; Kelvin-Helmholtz instability; liquid working medium; plasma jet; Taylor cavity;

D O I：

10.12382/bgxb.2024.0034

中图分类号：

学科分类号：

摘要：

The presence of positive feedback mechanism affecting the stability of combustion process as the plasma jet expands in a liquid media limits its further practical application. In order to explore the expansion characteristics of plasma jet in an integrated liquid working medium, a two-dimensional axisymmetric unsteady mathematical physical model of the interaction between plasma jet and liquid working medium is established and verified. A four-stage gradually expanding liquid-filled chamber structure is designed,and the expansion characteristics of plasma jet in liquid propellant LP1846 are numerically analyzed. The spatial and temporal distributions of the characteristic parameters,such as pressure,velocity and temperature,in the plasma jet field were obtained. The results show that the four-stage gradually expanding liquid- filled chamber structure can be used to enhance the radial expansion ability of plasma jet in the chamber and the radial influence range in the high pressure and temperature region of plasma jet head,so as to control the axial expansion speed and pulsation of plasma jet. The liquid propellant LP1846 with high viscosity and density is used to simulate the working medium,The gradually expanding liquid-filled chamber structure can slow down the axial expansion speed of plasma jet,effectively inhibits the Kelvin-Helmholtz instability and Taylor instability,and helps to enhance the expansion stability of plasma jet. The near-field pressure and temperature fluctuate due to the alternating generation of expansion and compression waves near the nozzle. © 2025 China Ordnance Industry Corporation. All rights reserved.

引用

共 22 条

[1]

ZHOU Y H, LU X, LIU D Y., The shaping filter in the random exterior ballistics, Journal of Ballistics, 8, 4, pp. 12-16, (1996)

[2]

ZHAO Y Q, HUANG Z Y., Breaking through the bottleneck of conventional weapons to develop electro-thermal chemical artillery [J], Modern Weaponry, 8, 8, pp. 28-30, (1996)

[3]

GONG C M, YI L, WANG K, Et al., Numerical modeling of plasma-assisted combustion effects on firing and intermediates in the combustion process of methanol-air mixtures [ J ], Energy, 192, (2020)

[4]

ROY A K, LANKENNAVAR P H, GHADGE V S., Present and futuristic trends in weapon system[J], Defence Science Journal, 67, 4, pp. 401-406, (2017)

[5]

GUO Z X., A new stage in the development of tank artillery-electrothermal chemical guns [ J], Tank and Armored Vehicles, 43, 15, pp. 32-36, (2021)

[6]

MORRISON W F, KNAPTON J D, BULMAN M J., Liquid propellant guns, Gun Propulsion Technology, 109, pp. 413-471, (1988)

[7]

ARENSBURG A, WALD S, GOLDSMITH S., X-ray diagnostics of a plasma-jet-liquid interaction in electrothermal guns[J], Journal of Applied Physics, 73, 5, pp. 2145-2154, (1993)

[8]

LIU D Y, ZHOU Y H, YU Y G., Experimental study of liquid working media used in electrothermal chemical launching [ J], Explosion and Shock Waves, 18, 3, pp. 29-34, (1998)

[9]

XUE X C, HUANG L, YU Y G, Et al., Interface instability of the thermal plasma jet [J], Physics of Plasmas, 30, 10, (2023)

[10]

JIANG D D, XUE X C., Interior ballistic characteristics of combustion and propulsion process of bulk-loaded liquid propellant, Acta Armamentarii, 42, 4, pp. 755-763, (2021)

← 1 2 3 →