| 有限水深复合格林函数的数值计算 |
| |
| 引用本文： | 谢永和,李润培,舒志.有限水深复合格林函数的数值计算[J].船舶力学,2005,9(1):23-28. |
| |
| 作者姓名： | 谢永和 李润培 舒志 |
| |
| 作者单位： | 1. 上海交通大学海洋工程国家重点实验室,上海,200030;浙江海洋学院工程学院,浙江,舟山,316004
2. 上海交通大学海洋工程国家重点实验室,上海,200030 |
| |
| 基金项目： | 国家高技术研究发展计划(863计划) |
| |
| 摘 要： | 有限水深格林函数值的正确求解对处于浅水的海洋结构物运动响应和载荷计算起着非常关键的作用.本文根据海洋结构物的物面对称性,在有限水深复合格林函数表达式的基础上推导出了格林函数偏导数的数值计算表达式,并对格林函数的奇异性进行了分析.采用抛物线积分法对其进行了积分,为有限水深海洋结构物的水弹性分析奠定了基础.计算结果表明,利用抛物线积分法所求得的运动响应与挪威DNV船级社SESAM软件的计算结果吻合得很好.
|
| 关 键 词： | 有限水深 对称物面 复合格林函数 数值计算 |
| 文章编号： | 1007-7294(2005)01-0023-06 |
| 修稿时间： | 2004年2月20日 |
Numerical calculation of finite water-depth composite Green function |
| |
| XIE Yong-he,LI Run-pei ,SHU Zhi.Numerical calculation of finite water-depth composite Green function[J].Journal of Ship Mechanics,2005,9(1):23-28. |
| |
| Authors: | XIE Yong-he LI Run-pei SHU Zhi |
| |
| Institution: | XIE Yong-he1,2,LI Run-pei 1,SHU Zhi 1 |
| |
| Abstract: | It plays a very important role in motion responses and hull loads calculation of ocean structures in shallow water to calculate correctly the numerical value of finite water-depth Green function.The numerical expressions of the derivative of finite water-depth composite Green function were deducted based on the symmetrical surface of ocean structures,and the singularities were analyzed.The integration of the numerical expressions of the derivative was carried out by parabola integration method in order to realize the hydroelastic calculation of ocean structures.It shows that the results of the motion responses obtained by the present method corresponds well with those of DNV SESAM. |
| |
| Keywords: | finite water-depth symmetrical surface of body composite Green function numerical calculation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
