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http://dx.doi.org/10.26748/KSOE.2017.08.31.4.281

Parametric Study on Scouring around Suction Bucket Foundation  

Park, Sunho (Department of Ocean Engineering)
Song, Seongjin (Department of Ocean Engineering)
Wang, Haiqing (Department of Ocean Engineering)
Joung, Taehwan (Department of Ocean Engineering, Korea Maritime and Ocean University(KRISO))
Shin, Yunsup (Norwegian Geotechnical Institute, NGI)
Publication Information
Journal of Ocean Engineering and Technology / v.31, no.4, 2017 , pp. 281-287 More about this Journal
Abstract
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.
Keywords
Computational fluid dynamics(CFD); Scour; OpenFOAM; Stick-up; Suction bucket; Monopile;
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