HAN Guang TAO Jianhua
Ph. D. Candidate,Department of Mechanics,Tianjin University,Tianjin 300072,P. R. China Professor,Department of Mechanics,Tianjin University,Tianjin 300072,P. R. China
Abstract:
This paper presents a refined parabolic approximation model of the mild slope equation to simulate the combination of water wave refraction and diffraction in the large coastal region. The bottom friction and weakly nonlinear term are included in the model. The difference equation is established with the Crank-Nicolson scheme. The numerical test shows that some numerical prediction results will be inaccurate in complicated topography without considering weak nonlinearity; the bottom friction will make wave height damping and it can not be neglected for calculation of wave field in large areas.