研究了两层流体中矩形箱浮体的辐射问题。基于特征函数匹配理论,针对矩形箱浮体的三种振荡运动模式(横荡、垂荡和横摇),建立两层流体中矩形箱浮体辐射势的求解方法,导出矩形箱浮体附加质量和阻尼系数的计算公式。对所建立的求解模型进行了数值计算分析,结果表明在矩形箱浮体的某个振荡频率范围内,流体的分层效应对其附加质量和阻尼系数有显著影响的。
The analytic solutions for the radiation problem of a floating rectangular box in a two-layer fluid are obtained by matching eigen functions of the interior and exterior problems. A comprehensive set of computational formulations for the added mass and wave damping is presented for three types of radiation problems (sway, heave, and roll). Some examples are given, showing that density stratifieation can have a large effect on the added mass and damping of the floating rectangular box in a two - layer fluid over a range of frequencies.