In this paper, the water-exit phenomenon has been studied experimentally and numerically. Based on the volume-of-fluid model and the Schnerr–Sauer cavitation model, the water-exit supercavitation around different shapes of cavitator projectiles is investigated using a dynamic mesh technology and three-dimensional six-degree-of-freedom method. The numerical results are compared with the experimental results obtained in our laboratory. Next, the effects of the cavitator shape on the characteristics of the projectile motion, breaking of the free surface, supercavitation size, and hydrodynamics of the water-exit supercavitation are analyzed. It was found that the hemispherical-nose projectile holds the best storage capacity and the longest displacement. The blunt disk-shaped nose projectile generates the maximum diameter of supercavity. The cavitation diameters of the conical-nose projectile and the hemispherical-nose projectile are relatively small.

在本文中，对出水现象进行了实验和数值研究。基于流体体积模型和Schnerr-Sauer空化模型，利用动态网格技术和三维六自由度方法研究了不同形状空化弹周围的出水超空化现象。数值结果与我们实验室获得的实验结果进行了比较。接下来，分析了空化器形状对弹丸运动特性、自由表面破裂、超空泡大小和出水超空泡流体动力学的影响。结果表明，半球形弹头具有最好的存储容量和最长的位移。钝圆盘形机头弹丸产生超腔的最大直径。