三维数值波动水槽波浪变形计算的0—1混合型边界元方法  

0-1 Hybrid Type BEM Method for the Calculation of Wave Transformation in 3D Numerical Wave Basin

作　　者：孙大鹏[1] 李玉成[1] 

机构地区：[1]大连理工大学土木系,大连116024

出　　处：《水动力学研究与进展（A辑）》1999年第4期429-437,共9页Chinese Journal of Hydrodynamics

基　　金：教育部留学回国基金资助!(教外司留 1998- 679)

摘　　要：为了改善常数元方法和线性元方法在求解三维波场波浪变形问题时的计算精度,考察上述两种单元剖分方式下,波势函数及波势函数法向导数对单元节点设定的适应性,本文构造了一种0—1混合型边界元。计算表明:这种0—1混合型边界元的剖分方式,在控制和减缓波浪“横向振动”幅度及水面单元水质点波动速度的计算方面,显示出了其独到的优越和灵活之处。To improve the accuracy of calculation in solving 3D wave transformation problem by using constant and linear element method, to consider the suitability of wave potential function and its derivative to the choice of element node, a 0 1 hybrid type BEM method is recommended in this paper. The results of computation show that this method is very effective for reducing and controlling the transverse oscillation of wave motion and for the calculation of wave particle velocity of wave motion on free surface, which is so important during the nonlinear wave transformation analysis in time domain.

关 键 词：非线性波 三维波场 0-1混合型边界元 波浪变形 

分 类 号：O353.2[理学—流体力学]