非线性波浪变形计算的三维边界元方法  

3-D boundary element method applied to non-linear wave transformation

作　　者：孙大鹏[1] 李玉成[1] 

机构地区：[1]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

出　　处：《水科学进展》2002年第4期397-402,共6页Advances in Water Science

基　　金：国家自然科学基金委员会与香港研究资助局联合资助 (4 991 0 1 61 985 ) ;国家自然科学基金项目(5 0 1 790 0 4)资助;TheprojectissupportedbyNationalNaturalScienceFundofChina(No .498760 2 6) .

摘　　要：采用 0 -1混合型边界元剖分计算域边界面 ,以提高边界元方法模拟三维波场波浪变形问题的数值计算精度。采用Spongelayer阻尼消波和Sommerfeld放射条件相匹配的边界处理方式 ,以消除计算域内的反射波。借助时域内的波面位置追踪 ,实现了三阶Stokes波在数值波动水槽中的波浪变形计算 。For higher accuracy in simulating the transformation of three dimensional wave, applying the advantages of the constant panels and linear elements, a combined boundary element is applied in this research The method can be used to get rid of the transverse vibration due to the accumulation of computing errors A combined boundary condition between the Sponge layer and the Sommerfeld radiation condition is used to remove the reflected waves from the computing domain By following the water particle on the water surface, the third order Stokes wave transform is simulated by the numerical wave flume technique The computed results have good agreement with theoretical one.

关 键 词：变形计算 LAPLACE方程 非线性波浪 三维边界元 0-1混合元 

分 类 号：TV139.2[水利工程—水力学及河流动力学]