研究了两层流体中垂直圆柱浮体水动作用力的问题。基于特征函数展开理论,建立了作用在垂直圆柱浮体上水动作用力的计算方法。与单层流体不同,对两层流体,除了表面波模态的水动作用力外,还有内波模态的水动作用力。对所建立的求解模型进行了数值计算分析,结果表明了流体的分层效应对垂直圆柱浮体水动作用力的影响是不可忽视的。
This paper discusses the equilibrium and stability of floatingbody, and introduced the definition of metacentre, then gives threedifferent methods of calculating the height of metacentre throughexamples, and finally explains the reason why we can determine thestability of an equilibrium of floating body by height ofmetacetre.