| 一种新的波浪变形三维数值模式──0-1混合型边界元 |
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| 引用本文： | 孙大鹏,李玉成.一种新的波浪变形三维数值模式──0-1混合型边界元[J].海洋学报,2000,22(3):44-48. |
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| 作者姓名： | 孙大鹏 李玉成 |
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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： | 国家教育部留学回国人员基金资助项目(教外司留1998第679号)． |
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| 摘 要： | 为提高边界元法模拟三维波场波浪变形的数值计算精度,借鉴常数元和线性元剖分方式、波势函数及波势函数法向导数对单元节点设定的各自适应性,提出了一种新的单元剖分模式──0-1混合型边界元,以控制和减缓由于计算误差累计而造成的波浪数值计算上的“横向振动”,借此结合边界元法的分区模式可实现较大范围的波场线性波浪变形计算,并为时域内的波浪非线性变形计算提供时间步长的数值保证.
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| 关 键 词： | 拉普拉斯方程 三维边界元 0-1混合型边界元 |
| 收稿时间： | 1998/7/29 0:00:00 |
| 修稿时间： | 1998-07-29 |
A new 3-D numerical model for the simulation of wave transformation -0-1 combined type boundary element method |
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| Sun Dapeng and Li Yucheng.A new 3-D numerical model for the simulation of wave transformation -0-1 combined type boundary element method[J].Acta Oceanologica Sinica (in Chinese),2000,22(3):44-48. |
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| Authors: | Sun Dapeng and Li Yucheng |
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| Institution: | State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024 |
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| Abstract: | To improve the accuracy of numerical modeling of 3-dimensional (3-D) wave transformation by bound-ary element method (BEM), based on the formation of constant and linear element, a new model (0 - 1 combined type BEM) is developed. By means of this model, the "transverse oscillation" caused by the accumulation of errors during the calculation can be suppressed. Using this and combining with sub-domain of BEM, the calculation of lin-ear wave transformation in a large area can be done. This method can also be used for the nonlinear wave transfor-mation in time domain. |
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| Keywords: | Laplace 3-dimensional BEM 0-1 combined type BEM |
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