이어도 종합해양과학기지에 대한 설계파력의 검토 II: 쇄파역에서의 유체력
KCI
OTHER
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Title
- 이어도 종합해양과학기지에 대한 설계파력의 검토 II: 쇄파역에서의 유체력
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Alternative Title
- Investigation on the Design Wave Forces for Ear-do Ocean Research Station II: Fluid Force in the Breaking Wave Field
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Author(s)
- 전인식; 심재설; 최성진
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Alternative Author(s)
- 심재설
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Publication Year
- 2000-12
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Abstract
- In the Part I, the three dimensional model testing with NNW deep water wave direction gave the results such that the occurrence of breaking waves over the peak of Ear-Do caused very small wave height at the structure position. But the measured wave forces were rather greater than the calculated forces based on deep water wave height. Furthermore, It was also perceived that the time series of the forces looked like corresponding to the case that waves were superimposed by an unidirectional current. In the present Part II, the current is presumed to be a flow secondly induced by breaking waves, and an extensive study to clarify the current in a quantitative sense is performed through numerical analysis and hydraulic experiment. The results showed that a strong circulation can surely occur in the vicinity of the structure due to radiation stress differentials given by the breaking waves. It was also recognized that the velocity of the induced current varied with the magnitude of energy dissipation rate introduced in the numerical analysis. The numerical analysis was tuned adjusting the dissipation rate so that the calculated wave field could closely match with the experimental results of Part I. The fluid force (in prototype) for the optimal match showed approximately 2.2% increased over the calculated value based on the deep water wave height (24.6m) whereas the force corresponding to the average of the experimental values showed the increase of about 13.0%.
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ISSN
- 1976-8192
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/6016
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Bibliographic Citation
- 한국해안·해양공학회논문집, v.12, no.4, pp.168 - 180, 2000
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Publisher
- 한국해안,해양공학회
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Keywords
- 이어도; 방사응력; 파랑류; 쇄파; 완경사 방정식; 에너지 감쇠율; 자켓 구조물; 삭스 프로그램; Ear-Do; radiation stress; wave induced current; breaking waves; mild slope equation; energy dissipation factor; offshore jacket structure
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Type
- Article
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