| 直接法与间接法求解固角系数的比较 |
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| 引用本文： | 宁德志,滕斌,赵海涛,郝春玲.直接法与间接法求解固角系数的比较[J].大连海事大学学报(自然科学版),2009,35(2). |
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| 作者姓名： | 宁德志 滕斌 赵海涛 郝春玲 |
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| 作者单位： | 宁德志,滕斌(大连理工大学,海岸和近海工程国家重点实验室,辽宁,大连,116023);赵海涛,郝春玲(国家海洋局第二海洋研究所,杭州,310000) |
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| 基金项目： | 国家自然科学基金资助项目，国家高技术研究发展计划 |
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| 摘 要： | 为提高边界元方法在工程计算中的效率,研究直接法与间接法求解固角系数的优缺点.以边界积分方程方法模拟非线性数值波浪水槽为例,分别用直接法和间接法求解固角系数.经与五阶深水斯托克斯波波面结果相比,两种方法获得的结果均与解析解吻合很好.但采用间接法求解固角系数时,计算域必须是封闭的,即便在计算域末端布置阻尼层消波,出流边界也不能省略.同时,随着计算域的增大,间接法求解固角系数的计算量较直接法大.总之,直接法比间接法更加方便经济.
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| 关 键 词： | 固角系数 直接法 间接法 数值波浪水槽 |
Comparison of direct and indirect methods for solving solid angle coefficients |
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| NING De-zhi,TENG Bin,ZHAO Hai-tao,HAO Chun-ling.Comparison of direct and indirect methods for solving solid angle coefficients[J].Journal of Dalian Maritime University,2009,35(2). |
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| Authors: | NING De-zhi TENG Bin ZHAO Hai-tao HAO Chun-ling |
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| Institution: | NING De-zhi1,TENG Bin1,ZHAO Hai-tao2,HAO Chun-ling2(1.State Key Laboratory of Coastal , Offshore Engineering,Dalian University of Technology,Dalian 116023,China,2.The Second Research Institute of Oceanography,Hangzhou 310000,China) |
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| Abstract: | The pros and cons of direct and indirect methods for solving solid angle coefficients were proposed to enhance the efficiency of boundary element method(BEM) in engineering calculations.By taking the simulation of nonlinear numerical wave tank model using boundary integral equation method as an example,direct and indirect methods were used to compute solid angle coefficients respectively.Comparing with the fifth-order deep-water Stokes wave elevation,good agreements are obtained among analytical solution an... |
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| Keywords: | solid angle coefficient direct method indirect method numerical wave tank |
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