摘要
用仿真方法对平底结构的入水砰击问题进行了研究,建立了二维气水流场的有限元模型.考虑空气、重力等因素在砰击过程中的影响,描述了空气层与水面的混合情况以及平底结构入水瞬间空气层内各物理参数(密度、内能、压力等)的变化情况.讨论了自由液面的变化和飞溅效应对砰击压力的影响,并对砰击压力峰值产生的机理进行了探讨.
Study on the water entry of a flat-bottom structure was carried out by means of a simulation method. Two dimensional finite element models were established and the factor of air cushion and gravity was considered. In the calculation the mixture status of air layer and water was observed and the variation of physical parameters such as density, specific internal energy (SIE) and pressure were recorded. And also the effect of free water surface and splash was analyzed and the production mechanism of the peak value of impact pressure was discussed.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2005年第5期670-673,共4页
Journal of Shanghai Jiaotong University
关键词
平底结构
入水
空气垫
飞溅
仿真
Computer simulation
Finite element method
Pressure measurement
Simulation
Slamming (ships)
Structural analysis
