Numerical simulation of the railgun muzzle arc based on FLUENT

摘要：

　　Railgun has the capacity to accelerate the projectile to ultra-high speed.While thehigh temperature electric arc is exist after the projectile left the railgun.Meanwhile, the high speed movement and the radiation of the plasma at the muzzle area may produce a complex flow field.In this paper, a three-dimension arc model is built to simulate the plasma flow field at the muzzle area.Corresponding to the current of residual plasma reignited at 300V in a launch experiment of railgun, three currents of 200A, 250A and 300A are adopted.A secondary development of FLUENT with UDF codes is applied to solve the magneto-hydrodynamic equations.The distribution of current density, velocity, temperature and pressure is obtained from the simulation.The results show that the plasma is mainly exist between the arc root and the projectile whatever the current, the velocity of plasma directs to the projectile.The highest temperature is exceed to 29000K under the current of 300A.

关键词： Railgun Muzzle area Simulation Arc plasma FLUENT

作者: Yuan GAO Hong-cheng XIAO Xiao-ya GAO Ying-tao XU Gang WAN Bao-ming LI

作者单位: National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing Information Central of China North Industries Group Corp, Beijing, 100089, China National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing

会议类型: 国际会议

会议名称: 2018 International Conference on Defence Technology (2018国际防务技术会议)

会议地点: 北京

会议语种:英文

页码: 65-68

在线出版日期: 2018-10-21（万方平台首次上网日期，不代表论文的发表时间）