| 源造波法在三维完全非线性数值波浪水槽中的应用 |
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| 引用本文： | 宁德志,滕斌,周斌珍,刘珍. 源造波法在三维完全非线性数值波浪水槽中的应用[J]. 大连海事大学学报(自然科学版), 2008, 34(2): 1-6 |
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| 作者姓名： | 宁德志 滕斌 周斌珍 刘珍 |
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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 辽宁大连116024 |
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| 基金项目： | 国家自然科学基金 , 国家高技术研究发展计划(863计划) , 大连理工大学校科研和教改项目 |
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| 摘 要： | 为消除波浪在水槽出流边界的反射及波浪遇到结构物后在入射边界形成的二次反射,基于时域高阶边界元方法建立三维完全非线性数值波浪水槽模型:利用源造波法产生入射波浪,采用人工阻尼层技术消除波浪反射及二次反射;建立水槽的格林函数并应用于整个计算域,消除水槽两侧壁和底面的积分,减少了计算量.利用所建模型分别对规则波和不规则波的数值实验表明,数值结果与理论解吻合良好,且在出流边界和入射边界均无反射现象.
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| 关 键 词： | 源造波法 完全非线性 数值波浪水槽 高阶边界元法 |
| 文章编号： | 1006-7736(2008)02-0001-05 |
| 修稿时间： | 2007-11-26 |
Application of source generation of waves in 3D fully nonlinear numerical wave tank |
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| NING De-zhi,TENG Bin,ZHOU Bin-zhen,LIU Zhen. Application of source generation of waves in 3D fully nonlinear numerical wave tank[J]. Journal of Dalian Maritime University, 2008, 34(2): 1-6 |
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| Authors: | NING De-zhi TENG Bin ZHOU Bin-zhen LIU Zhen |
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| Abstract: | A three-dimensional fully nonlinear numerical wave tank(NWT) model was founded based on a time-domain higher-order boundary element method(HOBEM) to eliminate wave reflection at outflow boundary and secondary reflection at the incident boundary from a structure.The source generation of waves was used to generate input waves and the artificial damping layers were adopted to eliminate wave reflection and secondary reflection.A channel Green function was founded and applied in entire computational domain,and thus the integral on the two lateral sides and bottom were excluded,and the calculation complexity was reduced.Numerical experiments on regular and irregular waves using the model in a wave tank show that the numerical results match well with analytical solutions,and it has no reflection on both outflow boundary and incident boundary. |
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| Keywords: | source generation of waves fully nonlinearity numerical wave tank higher-order boundary element method |
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