Open AccessDIFFRACTION DIAGRAMS FOR DIRECTIONAL RANDOM WAVES
Author(s) -
Yoshimi Goda,
T. Takayama,
Tasumasa Suzuki
Publication year - 1978
Publication title -
proceedings of conference on coastal engineering/proceedings of ... conference on coastal engineering
Language(s) - English
Resource type - Journals
eISSN - 2156-1028
pISSN - 0589-087X
DOI - 10.9753/icce.v16.35
Subject(s) - diffraction , reflection (computer programming) , monochromatic color , optics , basis (linear algebra) , monochromatic electromagnetic plane wave , physics , mathematics , computer science , geometry , programming language
Conventional wave diffraction diagrams often yield erroneous estimation of wave heights behind breakwaters in the sea, because they are prepared for monochromatic waves while actual waves in the sea are random with directional spectral characteristics. A proposal is made for the standard form of directional wave spectrum on the basis of Mitsuyasu's formula for directional spreading function. A new set of diffraction diagrams have been constructed for random waves with the proposed directional spectrum. Problems of multi-diffraction and multi-reflection within a harbour can also be solved with serial applications of random wave diffraction.