Numerical Simulation of Underwater Ballstic Performance of High-speed Spinning Projectile

被引：0

作者：

Li R. ^{[1
]}

Wang R. ^{[1
]}

Xu B. ^{[1
]}

Liang J. ^{[1
]}

Qi X. ^{[1
]}

Wang J. ^{[1
]}

机构：

[1] Northwest Institute of Mechanical & Electrical Engineering, Xianyang, 712099, Shaanxi

来源：

| 1600年 / China Ordnance Society卷 / 41期

关键词：

Effective range; High-speed spinning; Simplified projectile prototype; Supercavitating projectile;

D O I：

10.3969/j.issn.1000-1093.2020.S1.014

中图分类号：

学科分类号：

摘要：

In order to maintain the motion stability of supercavitating projectile, the projectile is launched at a certain angular velocity and high-speed spin. The high-speed spinning supercavitation projectile is simulated based on the fluid volume function (VOF) model and six-degrees-of-freedom model.The simplified projectile, the tail skirt projectile and the conical-nosed projectile were designed and optimized based on the projectile design theory and supercavitating projectile design theory, and their speed characteristics, cavitation characteristics and ballistic characteristics were analyzed. The results show that the effective range can be improved by decreasing the cavitation size and increasing the projectile weight for the simplified projectile with cone cavitator. Compared with the simplified projectile, the cavitation formation of the tail skirt projectile is faster, the cavitation pulsation is weaker, and the speed attenuation is smaller in the process of underwater navigation; and the conical-nosed projectile has higher leaving velocity, smaller lateral deviation and better ballistic stability during the cross-medium water-entry navigation. © 2020, Editorial Board of Acta Armamentarii. All right reserved.

引用

页码：97 / 103

页数：6

共 15 条

[1] LOGVINOVICH G V, BUYVOL V N., Hydrodynamics of cavitating flows with perturbations, Journal de Physique Ⅳ, 110, 9, pp. 559-564, (2003)
[2] NEAVES M, EDWARDS J., Time-accurate calculations of axisymmetric water entry for a supercavitating projectile, Proceedings of the 34th AIAA Fluid Dynamics Conference and Exhibit, (2015)
[3] SUN K, DANG J J, HAO W M, Et al., Numerical simulation on vertical water entry impact of axisymmetric body at supersonic speed, Torpedo Technology, 23, 1, pp. 2-6, (2015)
[4] LI J C, WEI Y J, WANG C, Et al., Water entry trajectory characteristics of high-speed projectiles with various turbulent angular velocity, Journal of Harbin Institute of Technology, 49, 4, pp. 131-136, (2017)
[5] ZHU B B, SHI H H, HOU J, Et al., Numerical simulation of air entrainment amount during high-speed projectile into water, Journal of Zhejiang Institute of Science and Technology, 37, 3, pp. 402-408, (2017)
[6] LAUNDER B E, SPALDING D B., The numerical computation of turbulent flows, Computer Methods in Applied Mechanics & Engineering, 3, 2, pp. 269-289, (1974)
[7] TONG L, YU G, PENG Z, Et al., Coupled simulation of two-phase flow based on VOF model and dynamic mesh technology, Journal of Wuhan University of Technology (Information & Management Engineering), 30, 4, pp. 525-528, (2008)
[8] ZHU J K, CHEN Y, ZHAO D F., Extension of the Schnerr-Sauer model for cryogenic cavitation, European Journal of Mechanics, 52, pp. 1-10, (2015)
[9] GUO Z T., Study on the characteristics of the projectile water entry and the penetration resistance of metal targets in different media, (2012)
[10] ZHANG W, GUO Z T, XIAO X K, Et al., Experimental investigations on behaviors of projectile high-speed water entry, Explosion and Shock Waves, 31, 6, pp. 579-584, (2011)

← 1 2 →