摘要
Reflection and transmission of small amplitude surface waves were studied. Two vertical porous plates with the spacing L are fixed in the middle of an infinitely long channel of constant depth. An incident wave propagates in the negative x direction toward the porous plates. Analytical solutions were obtained for surface wave profiles. The results indicate that when the spacing L is a quarter-wavelength plus a multiple of the half-wavelength of incident wave, the amplitude of reflected wave and transmitted wave are reduced to the minimum. On the other hand, when the spacing L is a multiple of the half-wavelength of incident wave, the amplitude of reflected wave and transmitted wave have maximum values. For the two cases, energy dissipation caused by the two porous plates and water between them were discussed.
Reflection and transmission of small amplitude surface waves were studied. Two vertical porous plates with the spacing L are fixed in the middle of an infinitely long channel of constant depth. An incident wave propagates in the negative x direction toward the porous plates. Analytical solutions were obtained for surface wave profiles. The results indicate that when the spacing L is a quarter-wavelength plus a multiple of the half-wavelength of incident wave, the amplitude of reflected wave and transmitted wave are reduced to the minimum. On the other hand, when the spacing L is a multiple of the half-wavelength of incident wave, the amplitude of reflected wave and transmitted wave have maximum values. For the two cases, energy dissipation caused by the two porous plates and water between them were discussed.
