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- 주제어 : Riser support structure 라이져 지지 구조 (검색결과 1 건)
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FPSO Riser 지지 구조의 강도설계에 대한 위상최적화 응용
송창용(Chang-Yong Song),정준모(Joonmo Choung),심천식(Chun-Sik Shim) 한국해양공학회 2010 韓國海洋工學會誌 Vol.24 No.1
Recently, there has been an increase in the construction of various types of coastal structures for efficient wave dissipation, seawater exchange, and so on. Among these, a perforated slit caisson has been widely used to reduce the reflected wave energy and the wave pressure on the structure. Therefore, many studies on the wave force on a caisson, as well as the wave reflection from it, have been carried out with laboratory experiments and numerical analyses, considering it as a 2-D problem. However, because a structure like a perforated slit caisson has a variable 3-D shape, waves forces should be considered as a 3-D problem. Therefore, in this paper, a fully-nonlinear 3-D numerical model. (LES-WASS-3D) is proposed to examine the reflection characteristics of a perforated slit caisson with two chambers, The numerical model, LES-WASS-3D, was verified in a 3-D wave field by a comparison with existing experimental data for wave reflection coefficients. Then, using the numerical results, the reflection from a perforated slit caisson with two chambers was examined in relation to wave steepness, chamber width, and the shape/porosity of perforated slit.
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