Simulating regular wave propagation over a submerged bar by boundary element method model and Boussinesq equation model  

作　　者：李爽 何海伦 

机构地区：[1]Department of Ocean Science and Engineering,Zhejiang University [2]Key Laboratory of Ocean Circulation and Waves,Chinese Academy of Sciences [3]State Key Laboratory of Satellite Ocean Environment Dynamics,Second Institute of Oceanography,SOA

出　　处：《Chinese Physics B》2013年第2期308-313,共6页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos. 41106019 and 41176016);the Knowledge Innovation Programs of the Chinese Academy of Sciences (Grant No. kzcx2-yw-201);the Public Science and Technology Research Funds Projects of Ocean (Grant No. 201105018);the Natural Science Foundation of Jiangsu Province,China (Grant No. BK2012315)

摘　　要：Numerical models based on the boundary element method and Boussinesq equation are used to simulate the wave transform over a submerged bar for regular waves.In the boundary-element-method model the linear element is used,and the integrals are computed by analytical formulas.The Boussinesq-equation model is the well-known FUNWAVE from the University of Delaware.We compare the numerical free surface displacements with the laboratory data on both gentle slope and steep slope,and find that both the models simulate the wave transform well.We further compute the agreement indexes between the numerical result and laboratory data,and the results support that the boundary-element-method model has a stable good performance,which is due to the fact that its governing equation has no restriction on nonlinearity and dispersion as compared with Boussinesq equation.Numerical models based on the boundary element method and Boussinesq equation are used to simulate the wave transform over a submerged bar for regular waves.In the boundary-element-method model the linear element is used,and the integrals are computed by analytical formulas.The Boussinesq-equation model is the well-known FUNWAVE from the University of Delaware.We compare the numerical free surface displacements with the laboratory data on both gentle slope and steep slope,and find that both the models simulate the wave transform well.We further compute the agreement indexes between the numerical result and laboratory data,and the results support that the boundary-element-method model has a stable good performance,which is due to the fact that its governing equation has no restriction on nonlinearity and dispersion as compared with Boussinesq equation.

关 键 词：numerical wave tank boundary element method Boussinesq equation 

分 类 号：O241.82[理学—计算数学] O353[理学—数学]