Hybrid finite element method for wave transformation analysis

Title
Hybrid finite element method for wave transformation analysis
Author(s)
정태화; 박우선; 서경덕
KIOST Author(s)
Park, Woo Sun(박우선)
Publication Year
2003-08-24
Abstract
The mild-slope equation has widely been used for calculation of shallow water wave transformation. Recently, its extended version was introduced, which is capable of modeling wave transformation on rapidly varying topography. These equations were derived by integrating the Laplace equation vertically. In the present study, we develop a finite element model to solve the Laplace equation directly while keeping the same computational efficiency as the mild-slope equation. This model assumes the vertical variation of the wave potential as a cosine hyperbolic function as done in the derivation of the mild-slope equation, and the Galerkin method is used to discretize it. The computational domain is discretized with proper finite elements, while the radiation condition at infinity is treated by introducing the concept of an infinite element. The upper boundary condition can be either free surface or a solid structure. The applicability of the developed model is verified through example analyses of two-dimensional wave reflection and transmission. Analysis is also made for the case where a solid structure is floated near the still water level.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/32208
Bibliographic Citation
IAHR Congress, pp.339 - 345, 2003
Publisher
IAHR
Type
Conference
Language
English
Publisher
IAHR
Related Researcher
Research Interests

Development of harbor structures,Analysis of harbor structures,Design of harbor structures,항만구조물개발,항만구조물해석,항만구조물설계

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