Numerical simulation for high speed water entry of supercavitation projectile

摘要：

　　To explore the impact of water entry angle on the cavitation flow field of high-speed projectile,numerical simulation for modeling the water entry problem of projectile at high speed is performed,based on the finite volume method, VOF multiphase model, Schnerr-Sauer cavity model, SST k-ωturbulence model and dynamic mesh method.The results show that, the larger the entry angle is, the greater the peak pressure of the projectile is, and the faster rate of pressure decline when it enters the water.Meanwhile, the greater the water entry velocity of the projectile, the greater the pressure at the moment of impacting the water, the greater the acceleration and the attenuation rate of the velocity.The projectile is subjected to higher impact load at the moment of impacting the water, and the peak pressure is as many as thousands of times of atmospheric pressure.

关键词： Supercavitation Numerical simulation Multiphase flow Unsteady

作者: Qing MU Tian-hong XIONG Kang-jian WANG Wen-jun YI Jun GUAN

作者单位: National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing, Jiangsu, China

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: 618-623

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）