Wave Transformation using Modified FUNWAVE-TVD Numerical Model

摘要

The present modified FUNWAVE-TVD model,which is a modification to its previous version 2.1,is applied to solitary wave propagation and is tested against the experiments of Vincent and Briggs(1989) and Luth et al.(1994).The eddy viscosity breaking scheme is used for comparison with the existing study in the case of breaking experiment.The symmetry of wave-induced current is maintained when the modified model is employed to Vincent and Briggs(1989) breaking experiment,but the symmetry of wave-induced current in previous model is not maintained.A better agreement with the breaking experimental data is obtained in the modified model using eddy viscosity breaking scheme than the shock capturing breaking scheme using nonlinear shallow water equation.For comparison with the schemes in the model,the fourth order MUSCL-TVD scheme by Erduran et al.(2005) and the third order MUSCL-TVD scheme using minmod limiter is applied,and the numerical solutions of solitary wave are compared.