سال انتشار: ۱۳۸۵
محل انتشار: هفتمین همایش بین المللی سواحل، بنادر و سازه های دریایی
تعداد صفحات: ۸
B. Ataie-Ashtiani – Associate Professor of Civil Engineering, Sharif University of Technology, Tehran, Iran
A. Najafi Jilani – Ph.D. Candidate of Civil Engineering, Sharif University of Technology, Tehran, Iran
Extended Boussinesq-type water wave equations are derived in two horizontal dimensions to capture the nonlinearity effects and frequency dispersion of wave in a high accuracy order. A multi-parameter perturbation analysis is applied in several steps to extend the previous second order Boussinesq-type equations in to 6th order for frequency dispersion and consequential order for nonlinearity terms. The presented high-order Boussinesq-type equation is applied in a numerical model to simulate the wave field transformation due to physical processes such as shoaling, refraction and diffraction. The models results are compared with available experimental data which obtained in a laboratory wave flume with varying bottom in Delft Hydraulic Institute and an excellent agreement is obtained.