利用网格划分软件和缓坡方程计算港内波浪场  

Wave field computation in harbors using the mesh generation software and the mild-slope equation

作　　者：谭丽[1] 滕斌[1] 赵明[1] 

机构地区：[1]大连理工大学海岸及近海工程国家重点实验室,辽宁大连116024

出　　处：《海洋工程》2004年第4期107-114,共8页The Ocean Engineering

基　　金：国家自然科学基金资助项目(50025924)

摘　　要：提出了一套可方便应用于波浪场计算的方法。该方法包含了准确的边界输入输出技术,简便的地形输入技术,高质量的计算网格生成以及加速查寻、排序的数据结构。应用双曲型缓坡方程计算了港湾内的波浪场,数值计算时提出了处理建筑物表面部分反射边界条件的方法。将计算结果与边界元方法的结果和实验值进行了比较,证明该方法应用于波浪场可得到较理想的结果。对大连港区内的波浪折射绕射进行了计算,表明本方法可以应用于实际港口的波浪场计算中。　 A method that can be widely used for computing wave field in harbors is proposed in this paper. The method includes inputting and outputting boundary information accurately, inputting topography easily, generating computational mesh with high quality and data structure that can be sorted and searched quickly. The hyperbolic mild-slope equations are solved for computing the wave field in harbors. A method for dealing with the partial reflection boundary condition at the wall boundary is proposed in the numerical model. The results from this paper are compared to those from a boundary element method and experimental results, and the comparison justifies that good results can be obtained by using the present method. Finally, the computation of wave reflection and diffraction in the Dalian Harbor indicates that the present method can be widely used for computing the wave field in harbors.

关 键 词：计算网格 有限元法 缓坡方程 

分 类 号：O353.2[理学—流体力学] U658.9[理学—力学]