基于去奇异边界元法的双箱型防波堤消波特性研究  

Study on Wave Attenuation Characteristics of Double Box Water Surface Breakwater Based on Desingularized Boundary Integral Equation Method

作　　者：杨烜赫 吴静萍[1] YANG Xuanhe;WU Jingping(School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]武汉理工大学船海与能源动力工程学院,武汉430063

出　　处：《武汉理工大学学报（交通科学与工程版）》2024年第3期502-507,514,共7页Journal of Wuhan University of Technology（Transportation Science & Engineering）

摘　　要：基于Bragg反射共振采用双箱型水面防波堤加强波浪反射,提高消波性能.应用势流理论的去奇异边界元法,数值计算规则波浪与水面的箱型结构物的相互作用,计算了透射系数和反射系数,讨论了箱型结构物在两种间距下改变模型尺度对消波性能的影响.通过与解析解和试验结果的比较验证了构建的二维数值波浪水槽的有效性.设计了相同吃水3种不同宽度和相同湿表面积3种不同宽度的双箱模型,在两种间距下,数值计算了这6种模型与系列规则波的相互作用,分析了透射系数和反射系数随相对间距的变化规律.结果表明:在吃水和湿表面积相同两种情况下,均呈现出箱宽越大,一阶Bragg共振的反射系数越大,透射系数越小,且共振点发生了偏移.当间距小、波长大时,双箱消波特性与单体接近.Based on Bragg reflection resonance,double-box surface breakwater was used to strengthen wave reflection and improve wave absorption performance.The interaction between regular waves and box-shaped structures on the water surface was analyzed by using the desingularized boundary integral equation method of potential flow theory,and the transmission coefficient and reflection coefficient were calculated.The influence of changing the model scale of box-shaped structures under two kinds of spacing on wave-absorbing performance was discussed.Compared with the analytical solution and experimental results,the validity of the two-dimensional numerical wave flume was verified.Three different widths of the same draft and three different widths of the same wet surface area were designed.The interaction between these six models and a series of regular waves under two kinds of spacing was numerically calculated,and the variation law of transmission coefficient and reflection coefficient with relative spacing was analyzed.The results show that when the draft and wet surface area are the same,the larger the box width,the larger the reflection coefficient of the first-order Bragg resonance,and the smaller the transmission coefficient,and the resonance point shifts.When the distance is small and the wavelength is large,the wave attenuation characteristics of the double box are close to those of the single box.

关 键 词：Bragg共振 双箱型防波堤 消波特性 去奇异边界元法 势流理论 

分 类 号：U656.2[交通运输工程—港口、海岸及近海工程]