二维楔形体入水砰击仿真研究  

The Simulation Study on Water Entry of 2D Wedge Bodies

作　　者：陈震[1] 肖熙[1] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200030

出　　处：《上海交通大学学报》2007年第9期1425-1428,共4页Journal of Shanghai Jiaotong University

摘　　要：基于数值仿真的方法对二维刚性楔形体的入水砰击问题进行了研究.建立了包含气水流场的二维有限元模型,考虑空气、重力等因素在砰击过程中的影响,研究了流场的自由液面、压力和速度等物理量的变化情况.对不同入水角的楔形体入水的砰击压力峰值系数进行了计算,分析压力峰值的变化规律.结果表明,楔形体入水砰击压力峰值系数不仅与入水角度有关,而且与入水速度也有很大的关系.Based on the method of numerical simulation, two-dimensional finite element models including wedge bodies, gas and water were established and the water entry problem of wedge bodies was studied. Considering the effect of air and gravity, the variety of the free surface, pressure and velocity of the fluid field was studied. The coefficient of impact pressure peak of the wedge body with different angles was calculated and the rule of the coefficient was analyzed. The results show that the coefficient lies on not only the water entry angle of the wedge body but also the velocity of impact.

关 键 词：楔形体 入水砰击 自由液面 压力预报 

分 类 号：U663.2[交通运输工程—船舶及航道工程]