为了研究空化槽对弹丸波浪条件下入水稳定性以及减阻特性的影响,对弹丸头部分别为矩形空化槽、三角形空化槽以及无空化槽的3种弹丸入水过程进行数值模拟研究。结果表明:无空化槽弹丸形成的空泡相对较早闭合,使弹丸受到不均匀扰动,对弹道稳定以及减阻特性造成一定影响,其余两种有空化槽弹丸入水稳定性与减阻特性区别不大,矩形空化槽弹丸由于在空化槽处形成涡流对于弹丸的减阻特性比三角形空化槽弹丸的效果更好。

Inorder to study the effect of cavitation grooves on the water-entry stability and drag reduction characteristics of projectiles under wave conditions, numerical simulations were carried out on the entry of three different shapes of projectiles with rectangular grooves, triangular grooves and no grooves on the projectile head. Study their ballistic stability, drag reduction characteristics and underwater cavitation shape and flow field distribution during their entry into water under wave conditions. The results show that the cavitation formed by the projectiles without cavitation grooves forms a closure relatively early, causing the projectiles to be unevenly disturbed, which has a certain impact on the ballistic stability and drag reduction characteristics. There is little difference in the ballistic stability and drag reduction characteristics from the other two types of projectiles with cavitation grooves,the rectangular cavitation groove has a better effect on the drag reduction characteristics of the projectile due to the eddy current formed at the groove than the triangular groove.