| 淹没垂直圆柱横摇问题的解析研究 |
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| 引用本文： | 姜胜超,滕斌,宁德志,丛培文,郭士勇.淹没垂直圆柱横摇问题的解析研究[J].水道港口,2011,32(1):69-76. |
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| 作者姓名： | 姜胜超 滕斌 宁德志 丛培文 郭士勇 |
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| 作者单位： | 大连理工大学海岸和近海工程国家重点实验室,大连,116024 |
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| 基金项目： | 国家自然科学基金，国家重大专项 |
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| 摘 要： | 应用匹配特征函数展开法建立了有限水深淹没垂直圆柱横摇问题的解析解,通过与边界元方法的对比验证了该方法的正确性.基于上述模型,对淹没圆柱水动力系数进行了研究,结果表明,在大多数频率下,淹没圆柱的附加质量总是大于同样大小的漂浮圆柱,且在高频段近似为漂浮圆柱附加质量的两倍.当淹没深度较大时,圆柱附加质量趋向干常数,辐射阻尼趋...
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| 关 键 词： | 淹没圆柱 淹没圆盘 附加质量 辐射阻尼 解析解 匹配特征函数展开法 |
Analytical solutions of radiation problem by a submerged cylinder |
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| JIANG Sheng-chao,TENG Bin,NING De-zhi,CONG Pei-wen,GUO Shi-yong.Analytical solutions of radiation problem by a submerged cylinder[J].Journal of Waterway and Harbour,2011,32(1):69-76. |
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| Authors: | JIANG Sheng-chao TENG Bin NING De-zhi CONG Pei-wen GUO Shi-yong |
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| Institution: | (State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024 China) |
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| Abstract: | By means of the eigen-function expansion-matching method,an analytical solution was developed for pitch problem by a submerged vertical cylinder in finite water depth.It was validated by comparison with the result from a boundary method.Numerical examinations show that added mass of submerged cylinder is larger than that of the floating cylinder.It seems to have a twice relationship at high frequency range.If submerged deeply,added mass tends to a constant,and radiation damping approaches to zero.Added mass decreases with the increase of water depth,but radiation damping has no evident effect by water depth. |
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| Keywords: | submerged cylinder submerged plate added mass radiation damping analytical solution eigen-function expansion-matching method |
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