BRAGG SCATTERING OF WAVES OVER POROUS RIPPLED BED

Hajime Mase; Ken Takeba

doi:10.9753/icce.v24.%p

No. 24 (1994), Conference Proceedings

No. 24 (1994)

BRAGG SCATTERING OF WAVES OVER POROUS RIPPLED BED

Conference Proceedings

https://doi.org/10.9753/icce.v24.%25p

Published 1994-01-29

Hajime Mase⁺⁻
Ken Takeba⁺⁻

Hajime Mase

Dept. of Civil Eng., Kyoto Univ.

Ken Takeba

Dept. of Civil Eng., Kyoto Univ.

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Keywords

rippled bed
porous bed
bed
Bragg scattering
wave scattering

How to Cite

Mase, H., & Takeba, K. (1994). BRAGG SCATTERING OF WAVES OVER POROUS RIPPLED BED. Coastal Engineering Proceedings, 1(24). https://doi.org/10.9753/icce.v24.%p

Abstract

A time-dependent and a time-independent wave equations are developed for waves propagating over porous rippled beds taking account of the effects of porous medium. The mean water depth and the thickness of porous layer are assumed to be slowly varying compared to the wavelength of surface gravity waves, and the spatial scale of ripples is assumed to be the same as the wavelength of surface waves. By using the time-independent equation, the Bragg scattering is examined in onedimensional case. The results show that the reflected and transmitted waves become smaller than those in the case of impermeable rigid rippled bed due to energy dissipation in porous medium.

https://doi.org/10.9753/icce.v24.%25p

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BRAGG SCATTERING OF WAVES OVER POROUS RIPPLED BED

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