鱼雷斜入水忽扑现象数值仿真

张岳青; 蔡卫军; 李建辰; 王志杰; 庞多

doi:10.11993/j.issn.2096-3920.2018.02.008

鱼雷斜入水忽扑现象数值仿真

doi: 10.11993/j.issn.2096-3920.2018.02.008

中国船舶重工集团公司第705研究所, 陕西西安, 710077

详细信息

作者简介:
张岳青(1984-), 男, 博士, 高工，主要研究方向为冲击动力学及流固耦合.

中图分类号: TJ630.1; TB71.2
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- 文章访问数: 848
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- 被引次数: 0
出版历程
- 收稿日期: 2017-09-04
- 修回日期: 2017-11-06
- 刊出日期: 2018-05-08

Simulation on Whip Phenomenon of Torpedo during Oblique Water Entry

The 705 Research Institute, China Shipbuilding Industry Corporation, Xi’an 710077, China

摘要

摘要: 针对目前鱼雷入水初始弹道计算不准确的问题, 对鱼雷入水过程中涉及的机理性问题进行了分析。基于无网格的优势, 采用有限元法(FEM)/光滑质点动力学(SPH)耦合方法, 对鱼雷斜入水大姿态运动过程进行了仿真。通过试验数据验证了仿真模型的正确性, 并分析了鱼雷斜入水过程的忽扑现象。计算了不同工况下低压力的数值, 并通过理论公式进行了验证。研究结果表明, 鱼雷斜入水后雷头下部易产生低压效应, 造成大姿态的低头运动。造成忽扑现象的低压力受入水攻角的影响较大, 负攻角工况低压力数值比正攻角大, 且持续作用时间长。所以需要充分考虑低压力的影响, 才能更准确的对鱼雷入水弹道问题进行分析和设计。
- 鱼雷 /
- 入水 /
- 忽扑现象 /
- 有限元法 /
- 光滑质点动力学(SPH) /
- 耦合方法
Abstract: To solve the problem of inaccurate calculation of torpedo’s initial trajectory, the water entry mechanism of a torpedo is analyzed. Based on the advantage of meshless method, finite element method(FEM)/smoothed particle hydrodynamics(SPH) coupling method is used to simulate torpedo’s large attitude motion process during oblique water entry. The correctness of the simulation model is verified by the experimental data. The whip phenomenon of torpedo during oblique water entry is analyzed, and the values of low pressure under different conditions are calculated and verified by theoretical formula. Results show that when a torpedo is entering into water, the area part under the torpedo head is trend to produce low-pressure effect, resulting in large-attitude downward motion and the whip. The low pressure causing the whip phenomenon is significantly affected by the angle of attack. The low-pressure value is larger and the duration of action is longer in the negative attack angle condition, compared with those in the positive attack angle condition. Therefore, in order to more accurately analyze and design the torpedo trajectory during water entry, the effect of the low pressure is necessary to be considered.
- torpedo /
- water entry /
- whip phenomenon /
- finite element method(FEM) /
- smoothed particle hydrodynamics(SPH) /
- coupling method

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参考文献(13)

[1]	徐宣志. 鱼雷力学[M]. 北京: 国防工业出版社, 1992.
[2]	王永虎, 石秀华. 空投雷弹斜入水初始弹道数值分析[J]. 弹道学报, 2012, 24(2): 92-95. Wang Yong-hu, Shi Xiu-hua. Numerical Analysis for Initial Hydro Ballistics of Airborne Missile During Oblique Water Entry Impact[J]. Journal of Ballistics, 2012, 24(2): 92-95.
[3]	严忠汉. 鱼雷入水初期水弹道稳定技术分析[J]. 水动力学研究与进展, 1990, 5(3): 117-126. Yan Zhong-han. The Technology of Stabilization of Initial Trajectory of Water Entry Torpedoes[J]. Journal of Hydrodynamics, 1990, 5(3): 117-126.
[4]	颜开, 史淦君, 薛晓中, 等. 用Mackey方法计算鱼雷带空泡航行时的入水弹道[J]. 弹道学报, 1998, 10(2): 93- 96. Yan Kai, Shi Gan-jun, Xue Xiao-zhong, et al. The Water Entry Trajectory Calculation of a Torpedo with Cavity by Use of Mackey Method[J]. Journal of Ballistics, 1998, 10 (2): 93-96.
[5]	陈九锡. 三维空间入水弹道测量的新方法[J]. 船舶力学, 2001, 5(2): 5-22. Chen jiu-xi. New Method for Measuring Ballistic Parameters Just Using Accelerometers[J]. Journal of Ship Mechanics, 2001, 5(2): 5-22.
[6]	徐杏钦. 鱼雷入水段弹道研究[J]. 鱼雷技术, 2004, 12 (4): 29-31. Xu Xing-qin. Investigation of Water Entry Trajectory Torpedo[J]. Torpedo Technology, 2004, 12(4): 29-31.
[7]	潘光, 吴文辉, 毛昭勇, 等. 高空远程滑翔鱼雷全弹道仿真关键技术[J]. 鱼雷技术, 2009, 17(4): 10-15. Pan Guang, Wu Wen-hui, Mao Shao-yong, et al. Key Tec- hnologies about Complete Trajectory Simulation for High Altitude Long Range Gliding Torpedo[J]. Torpedo Technology, 2009, 17(4): 10-15.
[8]	程文鑫, 蔡卫军, 杨春武. 鱼雷小角度入水过程仿真[J]. 鱼雷技术, 2014, 22(3): 161-164. Cheng Wen-xin, Cai Wei-jun, Yang Chun-wu. Simulation on Small Angle Water Entry Process of Torpedo[J]. Torpedo Technology, 2014, 22(3): 161-164.
[9]	朱珠, 袁绪龙, 刘维. 柱体大攻角入水弹道建模与仿真[J]. 火力与指挥控制, 2015, 40(2): 13-23. Zhu Zhu, Yuan Xu-long, Liu Wei. On Modeling and Simul- ation of Cylinder Dropping in Water with High Angle of Attack[J]. Fire Control & Command Control, 2015, 40(2): 13- 23.
[10]	李永利, 刘安, 冯金富, 等. 航行器小角度入水跳弹过程研究[J]. 兵工学报, 2016, 37(10): 1860-1872. Li Yong-li, Liu An, Feng Jin-fu, et al. Research on Ricochet Process of Small Angle Water Entry Vehicle[J]. Acta Armamentarii, 2016, 37(10): 1860-1872.
[11]	李佳川, 魏英杰, 王聪, 等. 不同扰动角速度高速射弹入水弹道特性[J]. 哈尔滨工业大学学报, 2017, 49(4): 131-136. Li Jia-chuan, Wei Ying-jie, Wang Cong, et al. Water Entry Trajectory Characteristics of High Speed Projectiles with Various Turbulent Angular Velocity[J]. Journal of Harbin Institute of Technology, 2017, 49(4): 131-136.
[12]	张岳青, 蔡卫军, 李建辰, 等. FEM/SPH耦合方法在鱼雷入水研究中的应用[J]. 鱼雷技术, 2017, 25(1): 1-6. Zhang Yue-qing, Cai Wei-jun, Li Jian-chen, et al. Application of a FEM/SPH Coupling Method to Torpedo Water Entry[J]. Torpedo Technology, 2017, 25(1): 1-6.
[13]	严卫生. 鱼雷航行力学[M]. 西安: 西北工业大学出版社, 2005.