【摘要】 当结构与流体发生冲击作用时,不但流体会对结构产生较大的砰击压力,结构响应也会反过来对流场产生显著影响,两者之间存在强烈的流固耦合现象.物理直观表明,结构弹性效应的存在会减缓冲击的作用.针对楔形结构,首先在Wagner入水冲击理论的基础上,建立计及耦合效应对砰击压力的计算方法,经与试验结果进行比较,表明计算方法的可行性;然后在此基础上讨论了入水速度、底倾角及结构刚度对砰击压力的影响.更多还原

【Abstract】 There is a strong interaction between fluid fields and solid structures when impact occurs.Not only can the fluid generate big slamming pressures on the structure,but the structure’s response has significant effects on the fluid’s flow fields,as strong fluid-solid coupling exists between them.Structural elasticity can reduce the effect of impact.This paper analyzes wedged structures,first comparing experimental results with our proposed computations of fluid-solid coupling based on Wagner theory.With this,we verify the correctness of the proposed computational method.On the basis of that,we discuss the effects of water entry velocity,deadrise angle and structural stiffness on slamming pressures.更多还原