이어도 종합해양과학기지에 대한 설계파력의 검토 II: 쇄파역에서의 유체력 KCI OTHER

Title
이어도 종합해양과학기지에 대한 설계파력의 검토 II: 쇄파역에서의 유체력
Alternative Title
Investigation on the Design Wave Forces for Ear-do Ocean Research Station II: Fluid Force in the Breaking Wave Field
Author(s)
전인식; 심재설; 최성진
Publication Year
2000-12
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%.
ISSN
1976-8192
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/6016
Bibliographic Citation
한국해안·해양공학회논문집, v.12, no.4, pp.168 - 180, 2000
Publisher
한국해안,해양공학회
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
Type
Article
Publisher
한국해안,해양공학회
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