A study on the wave control function of ecosystem control structures

J. Ocean Eng. Technol. 1996;10(4):149-159.

생태계제어 구조물의 파랑제어 효과에 관한 연구

김현주,류청로,손원식

한국기계연구원 선박해양공학연구센터,부경대학교 해양과학대학 해양공학부,한국기계연구원 선박해양공학연구센터

Keywords: Ecosystem Control Structure, Wave Control, Dimensional Analysis, Hybrid Model

핵심용어: 생태계제어 구조물, 파랑 제어, 차원해석, 복합모델

Abstract

Multipurpose development of the coast and ocean can be considered as multifunction construction combining the functions of coastal protection, waterfront amenity and creation or rehabilitation of habitats. Multfunction development of coastal and ocean spaces can be accomplished by applying the ecosystem control structure of artificial habitats which will cultivate fishing ground with ecological harmony to the coastal protection system. To evaluate the applicability of ecosystem control structures as as fundamental coastal protection structure, wave control function of the structure is studied by numerical and physical analyses. Dimensional analysis and hydraulic experiment point out the importance of width and crest depth of ecosystem control structure, construction water depth and wave steepness. Wave control efficiency is estimated by the attenuation coefficient $(K_H)$ according to wave steepness $(H_0/L_0)$, relative constructed water depth $(h_i/H_0)$, relative berm width $(B/L_0)$ and relative crest depth $(h_B/H_0)$ of eosystem control structure. Empirical fomulas are suggested based on the results of model test by applying the multiple model based on this experimental results and numerical wave shoaling-dissipation-breaking model appears to be valid for the analysis of wave transformation around ecosystem control structure in the coastal waters.