DECOMPOSITION AND INTERCEPTION OF LONG WAVES BY A SUBMERGED HORIZONTAL PLATE

Haruyuki Kojima; Takeshi Ijima; Akinori Yoshida

doi:10.9753/icce.v22.%p

No. 22 (1990), Conference Proceedings

No. 22 (1990)

DECOMPOSITION AND INTERCEPTION OF LONG WAVES BY A SUBMERGED HORIZONTAL PLATE

Conference Proceedings

https://doi.org/10.9753/icce.v22.%25p

Published 1990-01-29

Haruyuki Kojima⁺⁻
Takeshi Ijima⁺⁻
Akinori Yoshida⁺⁻

Haruyuki Kojima

Dept. of Civil Eng. Hydraulics, Kyushu Univ.

Takeshi Ijima

Dept. of Civil Eng. Hydraulics, Kyushu Univ.

Akinori Yoshida

Dept. of Civil Eng. Hydraulics, Kyushu Univ.

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Keywords

submerged plate
long waves
wave decomposition
wave interception

How to Cite

Kojima, H., Ijima, T., & Yoshida, A. (1990). DECOMPOSITION AND INTERCEPTION OF LONG WAVES BY A SUBMERGED HORIZONTAL PLATE. Coastal Engineering Proceedings, 1(22). https://doi.org/10.9753/icce.v22.%p

Abstract

The results of two-dimensional hydraulic experiments are presented on the decomposition of regular and irregular surface waves by a fixed, submerged horizontal plate with a finite length. Nonlinear interactions, containing the near-resonant interaction as well as the self- and mutual-interactions, among the waves affected by the submerged plate are found to induce the generation of higher harmonic components which propagate independently in the lee side, and to result in appreciable disintegration of wave form. This wave decomposition may produce considerable modification of the spectrum of a transmitted-wave train through the nonlinear transfer of energy from primary wave components to higher frequency components and consequently reduce its significant wave period. With the above mechanism, thus, the submerged horizontal plate may serve as an effective interception device against waves, especially of long wave length.

https://doi.org/10.9753/icce.v22.%25p

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DECOMPOSITION AND INTERCEPTION OF LONG WAVES BY A SUBMERGED HORIZONTAL PLATE

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