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该文采用实验方法探索研究了表面波经过多重穿透水面的刚性薄板结构物传播时,透射波的波高变化。将多重穿透水面的刚性薄板竖直固定及等间距布置。基于Bragg共振条件,板间距与波长的一半相当。改变板浸入水面下的深度、板的数目和波陡,进行了实验研究。实验时采用浪高仪测量模型前后波形,整理出入射波幅和透射波幅,绘出透射系数tK随无因次波浪参数kh变化的曲线。结果显示,当水波波长接近板间距两倍左右时,出现透射系数较低的现象。
In this paper, the experimental method is used to explore the change of the wave height of the transmitted wave when the surface wave propagates through the rigid thin plate structure penetrating the water surface. Multi-penetrating rigid rigid sheets fixed vertically and equally spaced. Based on the Bragg resonance conditions, the plate spacing is equivalent to half the wavelength. Changing the depth of submerged board, the number of plates and steep waves, the experimental study was carried out. The experiment uses the wave height meter to measure the waveforms before and after the model, sorts out the incident amplitude and the transmitted amplitude, and draws the curve that the transmission coefficient tK changes with the dimensionless wave parameter kh. The results show that when the wavelength of the water wave is close to twice the plate spacing, the transmission coefficient is low.