冰孔约束条件下航行体垂直出水空泡演变数值研究  

Nunerical Research on Evolution of Vertical Water-Exit Cavity of Vehicle under'Ice Hole Constraint

作　　者：王浩 黄振贵[1] 陈志华[1] 郭则庆[1] 王一航 刘想炎 那晓冬 WANG Hao;HUANG Zhengui;CHEN Zhihua;GUO Zeqing;WANG Yihang;LIU Xiangyan;NA Xiaodong(National Key Laboratory of Transient Physics,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学瞬态物理国家重点实验室,江苏南京210094

出　　处：《水下无人系统学报》2024年第3期507-515,共9页Journal of Unmanned Undersea Systems

摘　　要：高纬度地区在冬季不可避免地出现结冰期,考虑到低温冰区水下发射过程中面临冰层裂隙的特殊力学环境,扩展低温冰区中的潜射海洋装备具有重要的工程价值。浮冰的存在必然增强潜射航行体高速出水过程中的非线性。文中采用动态流体相互作用模块对航行体建立6自由度运动模型,通过对不同冰孔尺寸、冰孔形状约束条件下潜射航行体的水下运动及穿越水面阶段对比分析,探究冰孔对出水空泡演变的影响。研究发现:在冰孔约束出水过程中,冰孔对空泡具有明显的束缚作用,且束缚作用随着冰孔尺寸的减小而增强;相同冰孔形状下,冰孔尺寸越小,其对航行体俯仰运动特性影响越大;相同冰孔尺寸下,圆形冰孔对航行体俯仰运动特性影响大于正方形和三角形冰孔。In high-latitude areas,the icing period is inevitable during winter.In view of the special mechanical environment of ice cracks faced during underwater launching in low-temperature ice zones,it is of great engineering value to expand the application of submarine-launched marine equipment in a low-temperature ice zone.The presence of floating ice inevitably enhances the nonlinearity of submarine-launched vehicles during high-speed water exit.A 6-degree-of-freedom(DOF)motion model of the vehicle was built by using the dynamic fluid interaction module(DFBI).Through comparative analysis of the underwater and cross-water motion stages of the submarine-launched vehicle under different ice hole sizes and shapes,the influence of ice holes on the evolution of the water-exit cavity was explored.The findings indicate that the ice hole has an obvious binding effect on the cavity during the process of water exit,and the binding effect increases with the decrease in ice hole size.For the same shape of the ice hole,a smaller ice hole size is accompanied by a greater impact on the pitching motion characteristics of the vehicle.For the same ice hole size,the circular ice hole has a greater impact on the pitching motion characteristics of the vehicle than square and triangular ice holes.

关 键 词：冰孔约束 潜射 航行体 出水空泡 

分 类 号：TJ630.1[兵器科学与技术—武器系统与运用工程] U674[交通运输工程—船舶及航道工程]