BOUSSINESQ MODELLING OF NEARSHORE WAVES UNDER BODY FITTED COORDINATE  

作　　者：FANG Ke-zhao ZOU Zhi-li LIU Zhong-bo YIN Ji-wei 

机构地区：[1]State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024,China [2]Key Laboratory of Coastal Disaster and Defence, Ministry of Eduoation, Hohai University, Nanjing 210098,China, E-mail： [e-mail]

出　　处：《Journal of Hydrodynamics》2012年第2期235-243,共9页水动力学研究与进展B辑（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos.51009018,51079024);the Founds for Creative Research Groups of China (Grant No.50921001);the Key Laboratory of Coastal Disaster and Defence,Ministry of Education,Hohai University (Grant No.200803);the State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology (Grant No.LP1105)

摘　　要：A set of nonlinear Boussinesq equations with fully nonlinearity property is solved numerically in generalized coordinates,to develop a Boussinesq-type wave model in dealing with irregular computation boundaries in complex nearshore regions and to facilitate the grid refinements in simulations.The governing equations expressed in contravariant components of velocity vectors under curvilinear coordinates are derived and a high order finite difference scheme on a staggered grid is employed for the numerical implementation.The developed model is used to simulate nearshore wave propagations under curvilinear coordinates,the numerical results are compared against analytical or experimental data with a good agreement.A set of nonlinear Boussinesq equations with fully nonlinearity property is solved numerically in generalized coordinates,to develop a Boussinesq-type wave model in dealing with irregular computation boundaries in complex nearshore regions and to facilitate the grid refinements in simulations.The governing equations expressed in contravariant components of velocity vectors under curvilinear coordinates are derived and a high order finite difference scheme on a staggered grid is employed for the numerical implementation.The developed model is used to simulate nearshore wave propagations under curvilinear coordinates,the numerical results are compared against analytical or experimental data with a good agreement.

关 键 词：Boussinesq equation WAVES body fitted coordinate 

分 类 号：O316[理学—一般力学与力学基础] O175.29[理学—力学]