梁景奇，王 瑞，徐保成，祁晓斌，李瑞杰
（西北机电工程研究所，陕西 咸阳，712099）
摘 要：采用CFD 软件FLUENT18.2 动网格移动计算域技术，结合空化流场计算模型及刚体运动方程，建立了超空泡射弹入水过程求解的数值模型，实现了射弹与外流场的双向耦合。在验证模型准确性的基础上，研究了射弹不同攻角入水的阻力特性、空泡形态及运动特性。结果表明，不同攻角入水弹体沾湿部位不同，姿态变化不同，空泡具有不对称性；攻角越大，空化器阻力系数峰值越小，自由面受到砰击产生的飞溅更明显，弹体偏转角速度越大。
关键词：超空泡射弹；入水；耦合运动；数值仿真
作者简介：梁景奇（1992—），男，工程师，E-mail：ljq＿1024＠mail.nwpu.edu.cn。(www.xing528.com)
Research on influence of angle of attack on dynamic process of high-speed water-entry projectile
LIANG Jingqi，WANG Rui，XU Baocheng，QI Xiaobin，LI Ruijie
（Northwest Institute of Mechanical and Electrical Engineering，Xian Yang 712099，China）
Abstract：Using CFD software FLUENT18.2 moving grid mobile computing domain technology，combined with cavitation flow field calculation model and rigid body motion equation，the numerical model for solving the water entry process of supercavitating projectile is established，and the two-way projectile and external flow field are realized.On the basis of verifying the accuracy of the model，the resistance characteristics，cavitation mor⁃phology and motion characteristics of the projectile with different angles of attack are studied.It is found that the different parts of the angle of attack into the water body are different，the attitude changes are different，the cavi⁃tation has asymmetry；the larger the angle of attack，the smaller the peak of the cavitation resistance coefficient，the more the splash of the free surface is slammed，the body the greater the deflection angular velocity.
Key words：supercavitating projectiles；entering water；coupled motion；numerical simulation
免责声明：以上内容源自网络，版权归原作者所有，如有侵犯您的原创版权请告知，我们将尽快删除相关内容。
