基于多块结构重叠网格的电磁轨道发射器动态发射过程流场分析

doi:10.3969/j.issn.1000-1093.2018.02.004

兵工学报 ›› 2018, Vol. 39 ›› Issue (2): 234-244.doi: 10.3969/j.issn.1000-1093.2018.02.004

基于多块结构重叠网格的电磁轨道发射器动态发射过程流场分析

杜佩佩，鲁军勇，冯军红，李湘平

(海军工程大学舰船综合电力技术国防科技重点实验室, 湖北武汉 430033)

收稿日期:2017-07-20 修回日期:2017-07-20 上线日期:2018-04-04
通讯作者: 鲁军勇（1978—），男，研究员，博士生导师 E-mail:jylu@xinhuanet.com
作者简介:杜佩佩（1991—），男，博士研究生。E-mail：dpp19911212@163.com
基金资助:
国家“973”计划项目（6132620102）；国家自然科学基金项目（51607187、51522706、51407191、51307176）

Numerical Simulation and Analysis of Flow Field during Dynamic Launching of Electromagnetic Rail Launcher Based onOverlapping Multi-block Structured Mesh

DU Pei-pei， LU Jun-yong， FENG Jun-hong， LI Xiang-ping

(National Key Laboratory of Science and Technology on Vessel Integrated Power System, Naval University of Engineering, Wuhan 430033, Hubei, China)

Received:2017-07-20 Revised:2017-07-20 Online:2018-04-04

摘要/Abstract

摘要： 为了研究电磁轨道发射器动态发射过程流场，采用多块结构重叠网格方法、六自由度运动模型和Java程序，建立了高超声速弹丸二维运动瞬态模型。以双椭球模型为研究对象，验证了所提出非定常计算方法和重叠网格数据交互可靠性。对电磁轨道发射器4种不同运动工况下弹丸动态发射过程流场进行了数值模拟。研究结果表明：电磁轨道发射器动态发射过程是含复杂激波系流场，涉及弹前激波、移动球心球形激波、冠状激波共同作用；弹前激波出膛口到弹体尾部出膛口过程中，弹体头部中点压力分布呈现“对称性”，阻力系数分布和弹体头部中点压力分布具有相关性，弹前激波出膛口后呈现先减小、后增大“弱对称性”，弹体尾部出膛口时达到峰值；弹丸在空气域运动时，近壁面压力监测点反射后峰值会超过初始监测点压力峰值，距离弹轴距离越远，反射周期越小，监测点峰值压力衰减越慢。

关键词: 电磁轨道发射器, 动态发射, 计算流体动力学, 重叠网格, 膛口流场, 数值模拟

Abstract: The airflow distribution and law of muzzle flow field during the dynamic launching of electromagnetic rail launcher are studied. A two-dimensional transient model of projectile under high Mach number is established based on overlapping multi-block structured mesh, DFBI and Java program. The unsteady numerical method and the reliability of data interaction are validated by taking double ellipsoid model as the object of study. The flow fields in the dynamic launching processes of four cases are simulated. The numerical results show that the complex flow fields due to the interaction of projectile nose shock wave, spherical shock wave with moving center and coronal shock wave are generated in the dynamic launching process of electromagnetic rail launcher.The shock wave is out of the muzzle from the front projectile to the tail of projectile, and the pressure distribution at the midpoint of projectile nose presents symmetry. The resistance coefficient is related to the pressure distribution which presents a weak symmetry after the shock wave being out of the muzzle, which reachs a peak at the tail of projectile. When the projectile moves in the air, and the second peak pressure is greater than the first because of the superposition of the shock wave and its reflection. The farther the distance is, the smaller the reflection period is, the slower the pressure decays. Key

Key words: electromagneticraillauncher, dynamiclaunching, computationalfluiddynamics, chimeragrid, muzzleflowfield, numericalsimulation

中图分类号:

杜佩佩，鲁军勇，冯军红，李湘平. 基于多块结构重叠网格的电磁轨道发射器动态发射过程流场分析[J]. 兵工学报, 2018, 39(2): 234-244.

DU Pei-pei， LU Jun-yong， FENG Jun-hong， LI Xiang-ping. Numerical Simulation and Analysis of Flow Field during Dynamic Launching of Electromagnetic Rail Launcher Based onOverlapping Multi-block Structured Mesh[J]. Acta Armamentarii, 2018, 39(2): 234-244.

参考文献

［1］ Watt T J，Bryant M D. Modeling assumptions for railguns[J]. IEEE Transactions on Magnetics， 2007，43(1):380-383.
[2］林庆华, 栗保明. 电磁轨道炮瞬态磁场测量与数值模拟[J]. 兵工学报，2016，37(10)：1788-1794.
LIN Qing-hua, LI Bao-ming. Measurement and numerical simulation of transient electromagnetic field in railgun[J]. Acta Armamentarii, 2016, 37(10):1788-1794. (in Chinese)
[3］ Rodger D，Leonard P J．Modeling electromagnetic performance of moving rail gun launchers using finite elements[J]．IEEE Transactions on Magnetics，1993，29（1）：496-498．
[4］谭赛, 鲁军勇, 张晓, 等. 电磁轨道发射器动态发射过程的数值模拟[J]. 国防科技大学学报, 2016, 38(6):43-48.
TAN Sai, LU Jun-yong, ZHANG Xiao, et al. Numerical simulation of dynamic launching in electromagnetic rail launcher[J]. Journal of National University of Defense Technology, 2016, 38(6): 43-48.(in Chinese)
[5］ Gennady G A，Stankevich S V．Comparison between 2-D and 3-D electromagnetic modeling of railgun[J]．IEEE Transactions on Magnetics，2009，45（1）：453-457．
[6］时光，陈忠华，郭凤仪. 强电流滑动电接触下最佳法向载荷[J].电工技术学报，2014，29（1）：23-30.
SHI Guang, CHEN Zhong-hua, GUO Feng-yi. Optimal normal load of sliding electrical contacts under high current[J]. Transactions of China Electroechnical Society, 2014, 29(1):23-30. (in Chinese)
[7］田振国，孟晓永，安雪云，等. 电磁轨道发射状态下的复合导轨动态响应研究[J].兵工学报，2017，38（4）：651-657.
TIAN Zhen-guo, MENG Xiao-yong, AN Xue-yun, et al. Dynamic response of composite rail during launch process of electromagnetic railgun [J]. Acta Armamentarii, 2017，38（4）：651-657.(in Chinese)
[8］ Vassberg J C, Brodersen O P，Wahls R A， et al. Summary of the fourth AIAA CFD drag prediction workshop[C]∥The 1st AIAA CFD High-Lift Prediction Workshop. Chicago，IL, US： AIAA, 2010.
[9］徐嘉，刘秋洪，蔡晋生，等. 基于隐式嵌套重叠网格技术的阻力预测[J].航空学报，2013,34（2）：208-217.
XU Jia, LIU Qiu-hong, CAI Jin-sheng, et al. Drag prediction based on overset grids with implicit hole cutting technique[J]. Acta Aeronautica et Astronautica Sinics, 2013, 34(2): 208-217. (in Chinese)

[10］ Blanc F．Patch assembly：an automated overlapping grid assembly strategy [J]. Journal of Aircraft，2010，47（1）：110-119．
[11］ Wang J Z, Parthasarathy V. A fully automated chimera methodology for multiple moving body problems[J]. International Journal for Numerical Methods in Fluids，2000，33（7）：919-938．
[12］王莹，肖峰．电炮原理 [M]．北京：国防工业出版社，1995．
WANG Ying，XIAO Feng. Principle of electric gun[M]. Beijing: National Defense Industry Press, 1995. (in Chinese)
[13］ Blazek J. Computation fluid dynamics：principles and applications[M]. UK:Elsevier Science Ltd，2001.
[14］ Noack R W. Dirtlib：a library to add an overset capability to your flow solver[C]∥Proceedings of the 17th AIAA Computational Fluid Dynamics Conference. Toronto，Ontario, Canada：AIAA, 2005: 2005-5116.
[15］ Shih T H, Liou W W, Shabbir A, et al. A new k-ε eddy viscosity model for high Reynolds number turbulent flows[J]. Computers & Fluids, 1995, 24(3):227-238.
[16］李素循. 典型外形高超声速流动特性[M]. 北京：国防工业出版社，2007.
LI Su-xun. Hypersonic flow characteristics of typical shape[M]. Beijing: National Defense Industry Press, 2007. (in Chinese)

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基于多块结构重叠网格的电磁轨道发射器动态发射过程流场分析

Numerical Simulation and Analysis of Flow Field during Dynamic Launching of Electromagnetic Rail Launcher Based onOverlapping Multi-block Structured Mesh

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