锥和球形头部物体的垂直入水计算  

Calculation of Vertical Water Entry of Bodies with Cone and Sphere Heads

作　　者：宣建明[1] 陈九锡[1] 

机构地区：[1]中国船舶科学研究中心

出　　处：《水动力学研究与进展（A辑）》1991年第1期26-33,共8页Chinese Journal of Hydrodynamics

摘　　要：本文用MAC方法对圆锥的垂直不等速入水进行了数值计算,计算结果揭示了入水空泡从出现到闭合的全过程,得到了锥面上的压力、阻力系数、锥的运动速度等的变化规律。同时还对圆球的分离流动作了计算,得到了流动的分离点。计算结果与实验结果的符合程度是令人满意的。The numerical simulation is carried out using MAC method for the vertical water entry of a cone with unsteady velocity. It is shown in the simulation the whole process of the cavity development from its appearence to closure. The pressure on the cone surface, the drag coefficient and the speed of the cone are obtained. The separation flow around a sphere is calculated and the position of the separation point is determined. The agreement between the numerical results and experimental data is satisfactory.

关 键 词：入水 空泡 MAC方法 

分 类 号：TJ630.1[兵器科学与技术—武器系统与运用工程]