并列超空泡射弹弹道特性研究

刘富强; 罗 凯; 黄 闯; 古鉴霄; 董兴杰; 蒲汉平

doi:10.11993/j.issn.2096-3920.2020.02.013

并列超空泡射弹弹道特性研究

doi: 10.11993/j.issn.2096-3920.2020.02.013

1.
西北工业大学航海学院, 陕西西安, 710072
2.
中国船舶重工集团公司第705研究所, 陕西西安, 710077
3.
中国人民解放军 63759部队, 吉林长春, 130051

基金项目: 国家自然科学基金资助项目(51909218, 51679202); 陕西省自然科学基金资助项目(2019JQ-225); 西北工业大学研究生创意创新种子基金项目资助(ZZ2019066)

详细信息

作者简介:
刘富强(1995-), 男, 在读硕士, 主要研究方向为超空泡射弹及水下航行器总体设计.

中图分类号: TJ630.2; U661.1
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- 被引次数: 0
出版历程
- 收稿日期: 2019-08-22
- 修回日期: 2019-09-24
- 刊出日期: 2020-04-30

Study on Ballistic Characteristics of the Parallel Supercavitating Projectiles

1.
School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China
2.
The 705 Research Institute, China Shipbuilding Industry Corporation, Xi’an 710077, China
3.
63759th Unit, the People’s Liberation Army of China, Changchun 130051, China

摘要

摘要: 为了研究不同间距并列射弹对射弹的流体动力特性和弹道特性的影响, 文中基于流体体积函数(VOF)多相流模型, 采用多重参考系和动网格及移动计算域技术, 建立射弹入水仿真模型, 对单射弹和并列射弹的入水自由减速过程进行数值仿真。结果表明: 并列发射工况下, 射弹受到侧向力, 有攻角航行时空泡形态发生明显偏移, 射弹更容易穿刺空泡, 并且并列间距越小, 穿刺距离越长; 并列射弹的阻力系数明显高于单发射弹, 当并列间距为75 mm时, 阻力系数增加34.92%; 并列射弹的运动稳定性受到并列间距的影响, 在并列间距为50 mm弹径工况中, 并列射弹发生颠覆, 弹道失稳; 随着并列间距的增大该影响逐渐减弱, 当并列间距为100 mm弹径时, 并列射弹弹道稳定。研究结果可为并列超空泡射弹的工程应用提供参考。
- 并列超空泡射弹 /
- 弹道特性 /
- 流体动力 /
- 数值仿真
Abstract: To investigate the effects of the spacing of parallel projectiles on the hydrodynamic properties and ballistic characteristics of the projectiles, a water-entry simulation model of projectiles is established on the bases of the volume of fluid(VOF) multiphase flow model, the multi-reference system, the dynamic grid and the mobile computing domain technology. The water-entry free-deceleration processes of single projectile and parallel projectiles are simulated for different spacing of the projectiles, respectively. The results show that: 1) in parallel launching condition, the projectile is subjected to lateral force, when there is an angle of attack, the cavity has obvious offset and is easier to be punctured by the projectile, and the smaller the parallel spacing, the longer the puncturing distance; 2) the drag coefficient of the parallel projectiles is significantly higher than that of the single projectile, and when the parallel spacing is 75 mm, the drag coef-ficient increases by 34.92%; and 3) the stability of the parallel projectiles is affected by the parallel spacing, and in the case that the parallel spacing is 50 mm, the parallel projectiles overturn with instable trajectories, but this effect gradually weakens as the parallel spacing increases, and the trajectories of the parallel projectiles become stable when the parallel spacing is 100 mm. This research may provide reference for engineering application of parallel supercavitating projectiles.
- parallel supercavitating projectile /
- ballistic characteristics /
- fluid dynamics /
- numerical simulation

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