파랑변형 해석을 위한 복합 유한요소 모형

Title
파랑변형 해석을 위한 복합 유한요소 모형
Alternative Title
Hybrid finite element model for wave transformation analysis
Author(s)
정태화; 박우선; 서경덕
KIOST Author(s)
Park, Woo Sun(박우선)
Publication Year
2002-08-22
Abstract
Since Berkhoff proposed the mild-slope equation in 1972, it has widely been used for calculation of shallow water wave transformation. Recently, it was extended to give an extended mild-slope equation, which includes the bottom slope squared term and bottom curvature term so as to be 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 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 was discretized with proper finite elements, while the radiation condition at infinity was 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 was verified through example analyses of two-dimensional wave reflection and transmission.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/32523
Bibliographic Citation
제2회 한국유체공학회, pp.209 - 212, 2002
Publisher
한국해안해양공학회 등(해양관련 학회 공동)
Type
Conference
Language
Korean
Publisher
한국해안해양공학회 등(해양관련 학회 공동)
Related Researcher
Research Interests

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

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