摘要
本文对无限长常水深平底渠道中一小振幅入射波经由多个间隔相等、透水性能一致的细孔透水板的反射和透射进行了研究,得到了相邻两板间距l为入射波半波长的倍数时的一个特解.结果表明,当无量纲的孔隙影响参数G_0等于透水板个数的一半时消波效果最佳,入射波能量的50％能被消掉.此时反射波与透射波的振幅相等.
The reflection and transmission of water waves caused by a small amplitude incident wave through finite fine porous plates with equal spacing and permeability in an infinitely long open channel of constant water depth and zero slope are studied. A special solution is obtained when the distance between the two neighbouring plates is an integral multiple of the half-wavelength of the incident wave. It is found that when the dimensionless porous-effect parameter G0 is equal to half the total plate number, the wave dissipation reaches a maximum, and only 50% of the incident wave energy remains in the reflected and transmitted waves. Meanwhile, the reflected and transmitted waves have the same amplitude
出处
《应用数学和力学》
EI
CSCD
北大核心
1992年第4期335-339,共5页
Applied Mathematics and Mechanics
关键词
波动
小振幅波
线性波
消波
透水板
wave motion, small-amplitude ware, linear wave, incident wave,wave dissipation, porous plates
