A Study of Diffraction Effect on Wind Wave Model
| Autor: | Ching-Wen Liang, 梁瀞文 |
|---|---|
| Rok vydání: | 2006 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 94 Presently phase-averaged model wind wave numerical model cannot simulate combined effect of refraction-diffraction. In order to make up the shortcomings of the model, this paper used the Wind Wave Model (WWM) developed by Hsu et al. (2005), and consulted phase-decoupled refraction-diffraction effects proposed by Holthuijsen et al. (2003) to add refraction and diffraction in the WWM model. This study also applied Evolution Equation of Mild Slope Equation (EEMSE). The model includes the effects of the bottom slope, seabed curvature and wave-current interaction. For the rationality of using this model to computer wave diffraction, in this research we test three bathymetric landforms with constant depth and three slopes, and at the same time, this model is compared with SWAN model, EEMSE model and WWM model which matches up Mild Slope Equation. From the numerical result, no matter wave propagates in normal angle or oblique angle to produces diffraction effect in bathymetric landforms with constant depth and slopes, the skill using in this research obtained better reliable and accuracy solution. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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