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파라미터 변화에 따른 석션버켓기초에 발생하는 세굴현상에 대한 수치해석 연구
박선호(Sunho Park),송성진(Seongjin Song),왕해청(Haiqing Wang),정태환(Taehwan Joung),신윤섭(Yunsup Shin) 한국해양공학회 2017 韓國海洋工學會誌 Vol.31 No.4
In the case of fixed offshore wind turbines, scouring phenomena have been reported around sub-structures as a result of currents, which seriously damage the structural stability. A parametric study of the various sub-structures of a fixed offshore wind turbine was performed to investigate their effects on the scouring phenomena. For a suction bucket foundation and monopile, the effects of the stick-up heights and water depth were studied, respectively. The open source libraries, called OpenFOAM, were used to simulate a violent flow around a foundation. The numerical methods were selected based on a two-dimensional analysis of a suction bucket. Based on the results for various stick-up heights, a larger scouring region was observed with an increase in the stick-up height because of the down-wash flow around a foundation. Based on the results for various monopile water depths, the water depth had an insignificant effect on the scouring.