On diffraction and radiation problem for two cylinders in water of finite depth

被引：28
|
作者：
Wu, BJ [1 ]
Zheng, YH
You, YG
Jie, DS
Chen, Y
机构：
[1] Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510070, Peoples R China
[2] Univ Sci & Technol China, Hefei 230026, Peoples R China
来源：
OCEAN ENGINEERING | 2006年 / 33卷 / 5-6期
关键词：
analytical approach; velocity potential; hydrodynamic coefficients; exciting forces/moments;
D O I：
10.1016/j.oceaneng.2005.05.011
中图分类号：
U6 [水路运输]; P75 [海洋工程];
学科分类号：
0814 ; 081505 ; 0824 ; 082401 ;
摘要：
The hydrodynamic problem arising form the interaction of linear water waves with a wave energy device consisting of two coaxial vertical cylinders of different radii is investigated. One cylinder is riding in waves, while another is submerged in fluid. By use of the method of separation of variables and the method of matched eigenfunction expansion, analytical expressions for the potentials are obtained. Using the expressions for the potentials, analytical expressions for the hydrodynamic coefficients and exciting forces/moments on the device are obtained. Numerical results of the hydrodynamic coefficients and exciting forces/moments are presented for some ratios of the radius of the submerged cylinder to that of the riding one. It is found that the radius of the submerged cylinder has a significant influence on the hydrodynamic coefficients and exciting forces/moments for relatively bigger radius of the submerged cylinder at low frequencies. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：679 / 704
页数：26
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