Experimental measurement of water wave band gaps

Abstract

We experimentally demonstrate the existence of water wave band gaps in finite two-dimensional periodic graphitic and triangular structures composed of vertical cylinders which stand on the bottom of the water tank and project out of the water surface. The experimental data agree fairly well with the numerical simulations obtained from the multiple scattering method. The experimental evidence of water wave band gaps suggests that two-dimensional periodic structures of vertically oriented solid cylinders constitute a much better solution for the problem of coastal erosion.