关键词: 绕射理论, 分块式生波机, 蛇形生波理论, 点源, 相位滞后, 透射系数

Abstract: The present paper describes a numerical method for predicting the wave field produced by a segmented wave generator undergoing specified motions in a wave basin which may contain partially reflecting sides. The approach used is based on linear diffraction theory and utilizes a point source representation of the generator segments and any reflecting walls that are present. The method involves the application of a partial reflection boundary condition which is discussed. Numerical results are presented for the wave field due to specified wave generator motions in a rectangular basin. Cases which are considered include both perfectlys aborbiag and partially reflecting beaches along the basin sides, as well as the presence of perfectly reflecting short side-walls near the generator. The method can be used to account adequately for the effects of wave diffraction and partial reflections, and to predict the generated wave field realistically.

Key words: diffraction theory, segmented wave generator, snake principle, point source, phase shift, transmission coefficient