波浪相位对航行体出水过程水动力特性的影响  

Effect of Wave Phase on Hydrodynamic Characteristics of Underwater Vehicle out of Water

作　　者：朱坤[1] 陈焕龙[2] 刘乐华[1] 杨晓光[1] 张纪华[1] 

机构地区：[1]北京机电工程研究所,北京100074 [2]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《兵工学报》2014年第3期355-361,共7页Acta Armamentarii

基　　金：中央高校基本科研业务费专项资金项目(HIT.NSRIF.201173)

摘　　要：为了探索波浪与空泡共同作用对潜射航行体出水过程力学特性的影响规律,采用数值方法对不同波浪相位出水条件下航行体水动力与近水面空泡几何特性发展的物理机制进行了研究,获得了相关的流场数据。研究结果表明:出水波浪相位的差异导致近水面流体质点剪切运动的强弱与方向是导致航行体肩空泡空间不对称结构的一个重要因素;出水过程肩部空泡的不对称分布构筑了航行体迎背水面力学载荷的显著差异,从而导致实际发射过程航行体出水姿态的变化,并影响打击目标的精度。To explore how wave and cavity affect the mechanic property of underwater launched vehicle, the hydrodynamic characteristics of vehicles are researched through numerical simulation, the physical mechanism is analyzed for the development of cavitation-geometrical features near the water level with changeable launching wave phase, and the related flow field data is presented. The results show that the variation of phase leads to the shearing motion of particles close to the free surface, of which intensity and direction are the important factors to cause the asymmetrical structure of cavity on the vehicle shoulder. The asymmetrical feature contributes to an apparent diversity of mechanical load between the upstream and downstream faces, which has an adverse effect on the vehicle attitude during launching, consequently influencing the hit accuracy.

关 键 词：流体力学 水下发射 波浪 空泡 水动力 

分 类 号：TJ762.4[兵器科学与技术—武器系统与运用工程]