摘要
文章基于势流理论下均匀透空薄板内部流体连续方程和忽略对流项的欧拉方程,得到薄板内流体水平速度与压力差间的关系,进而建立了波浪与直墙前单层和多层透空薄板作用模型,通过匹配薄板两侧的边界条件,可求得直墙前透空薄板对波浪的反射系数、透射系数以及波能的吸收率。算例针对水深2.5 m,入射波浪周期3.5 s的工况,研究了直墙前12 m范围内设置不同层数透空薄板时,反射系数、透射系数及波能吸收率随组合参数G的变化,结果表明当布置四层透空薄板且0.8<Gr<4.6、0<Gi<1.6时,本算例波浪的吸收率可达90%以上。
Based on potential flow theory, an analytical study on wave action with one grid plate or mulh-gnd plates was carried out. Continuity equation and Euler equation without convective term were used to get the relation- ship between horizontal velocity and pressure difference of the fluid in the thin plate. By matching the boundary con- ditions at two sides of the plate, reflection coefficient, transmission coefficient and absorption rate wer- developed. Examples with water depth 2.5 m, incident wave period 3.5 s and wave absorbing distance 12 m were carried out to study the effects of different plates numbers with an assembly parameter G, and the results show that the absorption rate of four-layer perforated plates is bigger than 90% when 0.8 〈 Gr 〈 4.6 and 0 〈 G, 〈 1.6.
出处
《水道港口》
2017年第1期8-15,共8页
Journal of Waterway and Harbor
基金
交通运输部应用基础研究计划项目(2014329224380)
国家自然科学基金(51409135)
天津市应用基础与前沿技术研究计划(15JCQNJC07300)
中央级科研院所基本科研业务费专项(TKS150203)
关键词
波浪
多层透空薄板
吸收率
反射系数
透射系数
wave
multi-grid plates
absorption rate
reilection coeiiicient
transmission coettlclent
作者简介
耿宝磊（1980-），男，河北省衡水人，副研究员，主要从事波浪理论及波浪与结构物作用研究。
