空化器锥角对射弹跨音速入水初期超空化流动影响研究

王 瑞; 党建军; 姚 忠; 祁晓斌

doi:10.11993/j.issn.2096-3920.2019.02.012

空化器锥角对射弹跨音速入水初期超空化流动影响研究

doi: 10.11993/j.issn.2096-3920.2019.02.012

1.
西北工业大学航海学院, 陕西西安, 710072
2.
西北机电工程研究所, 陕西咸阳, 712099

详细信息

作者简介:
王瑞(1984-), 男, 在读博士, 高工, 主要研究方向为超空泡射弹武器技术.

中图分类号: TJ630.1; O35
计量
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- 被引次数: 0
出版历程
- 收稿日期: 2016-11-19
- 修回日期: 2016-12-18
- 刊出日期: 2019-04-30

Influence of Cavitator Cone Angle on Supercavitation Flow of Projectile in Initial Stage of Transonic Water-Entry

1.
College of Marine Engineering, Northwestern Polytechnical University, Xi’an 710072, China
2.
Northwest Institute of Mechanical & Electrical Engineering, Xianyang 712099, China

摘要

摘要: 为进一步研究空化器对射弹航行状态的影响, 以空化器锥角对射弹在跨音速入水时空泡的形成和发展为对象, 采用商业软件Fluent, 考虑水的可压缩性, 结合用户自定义函数(UDF)、多相流模型(VOF隐式)和动网格技术, 研究了空化器锥角分别为90°、120°、150°和180°的射弹在跨音速入水过程中的空化流动, 讨论了空化器锥角对射弹跨音速入水冲击载荷及流场特性的影响规律。研究结果表明, 锥角对射弹阻力特性、流场参数分布规律具有显著影响: 锥角增大, 激波面到空化器滞止点的跨越距离以及激波角度随之减小; 入水初期, 入水冲击载荷系数随锥角的增大而增大, 且冲击峰值的到达时刻提前, 峰值脉宽变窄。研究结论可为超空泡射弹航行器头部外形设计提供参考。
- 超空泡射弹 /
- 空化器锥角 /
- 跨音速 /
- 超空化流动
Abstract: To further understand the influence of cavitator on projectile’s navigation state, taking cavity formation and development of a projectile as the object during transonic water-entry process, the cavitation flows during transonic water-entry process by projectiles with different cavitator cone angles of 90°, 120°, 150° and 180° are simulated by using the commercial software Fluent combining with the user-defined function(UDF), the multiphase flow model (VOF implicit) and dynamic mesh, in which the compressibility of liquid is taken into account. And then the influences of the cone angle on the impact load and flow field characteristics during the projectile’s transonic water-entry process are discussed. The results show that the cone angle has significant influences on the distribution of flow field parameters and drag characteristics of projectiles: with the increase in the cone angle, the distance from the shock surface to the hysteresis point of cavitator and the angle of the shock wave decrease accordingly; in the initial stage of transonic water-entry, the impact load coefficient increases with the increase of the cone angle, and the impact peak arrives earlier with narrower peak pulse width. This study may provide a reference for the design of head shape of the supercavity projectile.
- supercavity projectile /
- cavitator cone angle /
- transonic /
- supercavitation flow

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参考文献(11)

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