高速弹丸穿越不同制退器时的膛口流场波系结构研究

doi:10.3969/j.issn.1000-1093.2012.05.020

兵工学报 ›› 2012, Vol. 33 ›› Issue (5): 623-629.doi: 10.3969/j.issn.1000-1093.2012.05.020

高速弹丸穿越不同制退器时的膛口流场波系结构研究

张焕好¹，陈志华¹，姜孝海¹，韩珺礼^1,2

(1.南京理工大学瞬态物理国家重点实验室，江苏南京 210094；2.北京机电研究所，北京 100012)

收稿日期:2010-06-17 修回日期:2010-06-17 上线日期:2014-03-04
作者简介:张焕好（1985—），女，博士研究生
基金资助:
国防科技重点实验室基金项目（9140C300205110C30）；国家自然科学基金青年科学基金项目（10902052）

Investigation on the Blast Wave Structures of a High-speed Projectile Flying ThroughDifferent Muzzle Brakes

ZHANG Huan-hao¹， CHEN Zhi-hua¹， JIANG Xiao-hai¹， HAN Jun-li^1,2

(1.National Key Laboratory of Transient Physics，Nanjing University of Science and Technology，Nanjing 210094，Jiangsu, China；2.Beijing Institute of Electromechanical Technology，Beijing 100012，China)

Received:2010-06-17 Revised:2010-06-17 Online:2014-03-04

摘要/Abstract

摘要： 基于二维非定常Euler方程，结合高精度Roe格式及结构化动网格技术，对弹丸从膛底飞离不同膛口装置过程中膛口流场的发展过程进行了数值模拟。数值计算结果清晰地揭示了光膛口以及分别加装开腔式和多孔制退器后膛口流场的不同波系结构，同时计算纹影图清楚地显示了其与弹丸相互作用及演变过程。计算结果与本课题组先前相关试验阴影照片相符。另外，根据数值流场结果，详细探讨了制退器降低后坐冲量的机理与膛口周围超压区域的分布，为制退器改进设计提供重要参考。

关键词: 流体力学, 膛口流场, 膛口制退器, 数值模拟, 膛口冲击波

Abstract: The processes of a high-speed projectile flying away from the bores through different muzzle brakes were numerically simulated by using the high resolution Roe scheme and the structured dynamic mesh techniques based on the two-dimensional unsteady Euler equation. The calculated results describe the evolution process of muzzle blast wave structures of different muzzle brakes (without muzzle brake, a three-way muzzle brake and a multi-cavity muzzle brake), and the interaction and evolution processes of them and the projectile are visualized clearly in the computational schlieren images. The numerical results agree well with our previous corresponding experimental shadowgraphs. Moreover, the reducing mechanism of recoil impulse of muzzle brake and the distribution of overpressure areas around the muzzle were discussed in detail, which can praide important guidance for improving the muzzle brake design.

Key words: hydromechanics, muzzle flow field, muzzle brake, numerical simulation, muzzle blast wave

中图分类号:

TJ012.2

张焕好，陈志华，姜孝海，韩珺礼. 高速弹丸穿越不同制退器时的膛口流场波系结构研究[J]. 兵工学报, 2012, 33(5): 623-629.

ZHANG Huan-hao， CHEN Zhi-hua， JIANG Xiao-hai， HAN Jun-li. Investigation on the Blast Wave Structures of a High-speed Projectile Flying ThroughDifferent Muzzle Brakes[J]. Acta Armamentarii, 2012, 33(5): 623-629.

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高速弹丸穿越不同制退器时的膛口流场波系结构研究

Investigation on the Blast Wave Structures of a High-speed Projectile Flying ThroughDifferent Muzzle Brakes

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