Study on Wave Attenuation Characteristics of Double Box Water Surface Breakwater Based on Desingularized Boundary Integral Equation Method
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 de-signed.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 co-efficient 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 dis-tance is small and the wavelength is large,the wave attenuation characteristics of the double box are close to those of the single box.
Bragg resonancedouble box breakwaterwave attenuation characteristicsdesingularized boundary integral equation methodpotential flow theory
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