| 两层流体中矩形箱浮体的附加质量和阻尼系数 |
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| 引用本文： | 石强,尤云祥,缪国平.两层流体中矩形箱浮体的附加质量和阻尼系数[J].海洋工程,2007,25(2):33-42. |
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| 作者姓名： | 石强 尤云祥 缪国平 |
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| 作者单位： | 上海交通大学,船舶海洋与建筑工程学院,上海,200030 |
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| 基金项目： | 国家自然科学基金资助项目(10572092,50323004)，高等学校博士点基金资助项目 |
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| 摘 要： | 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。
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| 关 键 词： | 两层流体 矩形箱浮体 表面波 内波 附加质量 阻尼系数 |
| 文章编号： | 1005-9865（2007）02-0033-10 |
| 收稿时间： | 2006-06-26 |
| 修稿时间： | 2006-06-26 |
Added mass and damping of a floating rectangular box in a two-layer fluid |
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| SHI Qiang,YOU Yun-xiang,MIAO Guo-ping.Added mass and damping of a floating rectangular box in a two-layer fluid[J].Ocean Engineering,2007,25(2):33-42. |
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| Authors: | SHI Qiang YOU Yun-xiang MIAO Guo-ping |
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| Abstract: | 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 stratification 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. |
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| Keywords: | two-layer fluid floating rectangular box surface waves internal waves added mass damping coefficient |
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