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论文类型： 会议论文

发表时间： 2000-01-01

收录刊物： SCIE、CPCI-S

页面范围： 68-73

关键字： composite model; nonlinear waves; Boussinesq equations; VOF method

摘要： The composite model, which is the combination of Boussinesq equations and the general description for three-dimensional (3-D) flow with the Volume of Fluid (VOF) method, has been developed for numerical simulation of nonlinear waves in a large domain. That is, the whole computational domain Omega is divided into two subdomains. In the near-field surrounding a structure, Omega(1), the flow is governed by the 3-D Navier-Stokes equations and numerically solved with the VOF method. Whereas in the sub-domain Omega(2) (Omega(2)=Omega-Omega(1)), the flow is governed by 2-D Boussinesq-type equations and numerically solved with the predictor-corrector algorithm. The velocity and the wave surface elevation are matched on the common boundaries of the two sub-domains. Numerical verification has been conducted for the case of wave propagation and interaction with a square caisson, It is shown that the composite model is effective to the computation of nonlinear waves in a large domain taking into account the complicated flow in the near-field.