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Development of A Fully Nonlinear Numerical Wave Tank
作者姓名:陈永平  李志伟  张长宽
作者单位:[1]DepartmentofCivilandStructuralEngineering,TheHongkongPolytechnicUniversity,HongKong,China//CollegeofTrafficandOceanEngineering,HohaiUniversity,Nanjing210098,China [2]DepartmentofCivilandStructuralEngineering,TheHongkongPolytechnicUniversity,HongKong,China [3]CollegeofTrafficandOceanEngineering,HohaiUniversity,Nanjing210098,China
基金项目:ThisworkwaspartlysupportedbyagrantfromtheResearchGrantCounciloftheHongKongSpecialAdministrativeRegion (ProjectNo .5 0 4 8/ 0 1E)
摘    要:A fully nonlinear numerical wave tank (NWT) based on the solution of the σ-transformed Navier-Stokes equation is developed in this study. The numerical wave is generated from the inflow boundary, where the surface elevation and/or velocity are specified by use of the analytical solution or the laboratory data. The Sommerfeld/Orlanski radiation condition in eonjunetion with an artificial damping zone is applied to reduce wave reflection from the outflow boundary. The whole numerical solution procedures are split into three steps, i.e., advection, diffusion and propagation, and a new method, the Lagrange-Euler Method, instead of the MAC or VOF method, is introduced to solve the free surface elevation at the new time step. Several typical wave cases, including solitary waves, regular waves and irregular waves, are simulated in the wave tank. The robustness and accuracy of the NWF are verified by the good agreement between the numerical results and the linear or nonlinear analytical solutions. This research will be further developed by study of wave-wave, wave-current, wave-structure or wave-jet interaction in the future.

关 键 词:非线性  数字化造波水池  拉格朗日-欧拉法  自由螺纹波  波动衰退

Development of A Fully Nonlinear Numerical Wave Tank
CHEN Yong-ping a,b,LI Chi-wai a,and ZHANG Chang-kuan b a.Development of A Fully Nonlinear Numerical Wave Tank[J].China Ocean Engineering,2004,18(4):501-514.
Authors:CHEN Yong-ping a  b    LI Chi-wai a  and ZHANG Chang-kuan b a
Institution:CHEN Yong-ping a,b,1,LI Chi-wai a,and ZHANG Chang-kuan b a Department of Civil and Structural Engineering,The Hongkong Polytechnic University,Hong Kong,China b College of Traffic and Ocean Engineering,Hohai University,Nanjing 210098,China
Abstract:
Keywords:nonlinear numerical wave tank  Lagrange-Euler method  free sloshing wave  solitary wave  regular wave  irregular wave
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