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固定于水面的多个半圆形结构物的水波Bragg反射
Bragg Reflection of Water Waves by Multiple Semicircular Structures Fixed on the Water Surface
【摘要】 基于线性波浪理论,应用边界元法(BEM)研究固定于静水面的多个半圆形结构物的水波Bragg反射现象.计算固定于海底的多个半圆形结构物的反射系数,并将计算结果与文献中的理论解进行比较,以验证BEM的正确性.计算并对比水面单个半圆形结构和多个半圆形结构的反射系数,以证明基于Bragg反射原理的多个结构物衰减波浪的有效性.进而分析多个半圆形结构物的个数、半径、间距等参数对Bragg反射特性的影响,研究结果可为基于Bragg反射原理的防波堤设计提供参考依据.
【Abstract】 Bragg reflection of water waves by multiple semicircular structures fixed on the water surface is investigated by using the boundary element method(BEM). It is based on the linear wave theory. In order to verify the correctness of BEM, the reflection coefficient of multiple semicircular structures fixed on the seabed is calculated. And the numerical results are compared with the theoretical results in literature. The effectiveness of the multiple semicircular structures fixed on the water surface in attenuating waves based on the principle of Bragg reflection is also proved. The effects of the number, the radius and the spacing of semicircular structures on the characteristics of Bragg reflection are investigated. The results of this study can provide a certain reference for the design of breakwater based on the principle of Bragg reflection.
【Key words】 multiple semicircular structures; water waves; Bragg reflection; boundary element method;
- 【文献出处】 上海交通大学学报 ,Journal of Shanghai Jiaotong University , 编辑部邮箱 ,2019年09期
- 【分类号】U656.2
- 【下载频次】72