BOUSSINESQ MODELLING OF NEARSHORE WAVES UNDER BODY FITTED COORDINATE

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...

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Bibliographic Details
Published inJournal of hydrodynamics. Series B Vol. 24; no. 2; pp. 235 - 243
Main Authors FANG, Ke-zhao, ZOU, Zhi-li, LIU, Zhong-bo, YIN, Ji-wei
Format Journal Article
LanguageEnglish
Published Singapore Elsevier Ltd 01.04.2012
Springer Singapore
Key Laboratory of Coastal Disaster and Defence, Ministry of Education, Hohai University, Nanjing 210098,China%State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024,China
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024,China
Subjects
body fitted coordinate
Boundaries
Boussinesq equation
Boussinesq equations
Computer simulation
Coordinates
Engineering
Engineering Fluid Dynamics
Hydrology/Water Resources
Mathematical analysis
Mathematical models
Nonlinearity
Numerical and Computational Physics
Simulation
Wave propagation
waves
下装
交错网格
广义坐标
建模
数值求解
有限差分格式
近岸地区
非线性Boussinesq方程
waves
Boussinesq equation
body fitted coordinate
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Summary: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.
Bibliography:31-1563/T
FANG Ke-zhao State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China Key Laboratory of Coastal Disaster and Defence,Ministry of Education,Hohai University,Nanjing 210098,China ZOU Zhi-li,LIU Zhong-bo,YIN Ji-wei State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China
Boussinesq equation; waves; body fitted coordinate
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.
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SourceType-Scholarly Journals-1
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content type line 23
ISSN:1001-6058
1878-0342
DOI:10.1016/S1001-6058(11)60239-4