Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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The Reflection Characteristics of a Perforated Slit Caisson with Two Chambers

이중 유공슬릿 케이슨에 의한 반사특성

  • Hur, Dong-Soo (Department of Ocean Civil Engineering (Institute of Marine Industry), Gyeongsang National University) ;
  • Lee, Woo-Dong (Department of Civil Engineering, Nagoya University) ;
  • Lee, Hyeon-Woo (Handong Engineering & Construction Co., Ltd.) ;
  • Kim, In-Chul (Division of Architecture and Civil Engineering, Dongseo University)
  • 허동수 (국립경상대학교 해양과학대학 해양토목공학과(해양산업연구소)) ;
  • 이우동 (나고야대학 공학연구과 사회기반공학) ;
  • 이현우 ((주)한동E&C 항만부) ;
  • 김인철 (동서대학교 건축토목시스템공학부)
  • Published : 2010.02.28
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Abstract

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.

Keywords

References

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