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평면 분산된 인공어초 집합의 어초협곡 간격에 따른 후류체적 특성
정소미(Somi Jung),김동하(Dongha Kim),나원배(Won-Bae Na) 한국해양공학회 2016 韓國海洋工學會誌 Vol.30 No.3
Considering the artificial reef (AR) canyon intervals facilitated by flatly distributed placement models, the wake volumes of 25 AR sets were characterized through the following works. First, twenty-five different canyon intervals were established to investigate how the intervals affect the wake volumes of the AR placement models, each with nine cube-type ARs. Second, the element-based finite-volume method was used to facilitate flow analyses. Third, the so-called wake volume concept was adopted, and finally a reasonable placement interval was found based on the size of the wake volumes and the associated unit propagation indices. From the analysis results, it was found that a maximum wake volume of 25.18 m³ was generated when the longitudinal and transverse intervals were fixed at 6 m and 0 m, respectively. Thus, to magnify the wake volume, it is recommended that artificial reefs be placed at intervals of 6 m (3 times the reef length) in the flow direction, with no intervals in the normal direction, implicitly indicating that an intensively stacked placement model is a better option to efficiently secure a larger wake volume for the cube-type ARs.
정소미(Somi Jung),나원배(Won-Bae Na) 한국해양환경·에너지학회 2021 한국해양환경·에너지학회 학술대회논문집 Vol.2021 No.5
해양 서식지 복잡성을 정량화 하기 위한 다양한 연구가 시도되었다. 해양 저서 생태계의 자연초를 흉내 내는 인공어초의 설계와 설치 기준은 대상 저서생물의 생활사와 밀접한 관련이 있다. 서식지 복잡성 또는 이를 구성하는 자연초의 구조적 복잡성은 인공어초에 적용되어야 하며, 이를 적용하고, 규명하는 체계적인 연구는 중요하다. 따라서 본 연구에서는 인공어초의 구조적 복잡성과 후류역 특성의 상관성을 분석하였다. 이를 위해 일반어초 6종을 분류하였으며, 이들 인공어초의 구조적 복잡성을 정량적인 지수로 정의하여 전산 유체해석을 수행하였다. 해석 결과는 6종의 인공어초의 표면 불규칙성 지수와 후류체적 간의 양의 상관관계를 나타내었다. Various studies have been carried out to quantify marine habitat complexity. The design and installation criteria for artificial reefs (ARs) that mimic the natural reefs of the marine benthic ecosystem are closely related to the life history of the benthic organisms. The complexity of the habitat or the structural complexity of the natural reefs that constitutes it should be applied to artificial reefs, and systematic research that applies and identifies those is important. Therefore, in this study, the correlation between the structural complexity of artificial reefs and the characteristics of the wake region was analyzed. For this purpose, 6 general artificial reefs were classified, and computational fluid analysis was performed by defining the structural complexity of these artificial reefs as a quantitative index. The analysis results showed a positive correlation between the surface irregularity index and the wake volume of 6 types of artificial reefs.