Browse > Article

The Reflection Characteristics of a Perforated Slit Caisson with Two Chambers  

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)
Publication Information
Journal of Ocean Engineering and Technology / v.24, no.1, 2010 , pp. 60-67 More about this Journal
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
Perforated caisson; Two chamber; LES-WASS-3D; Reflection characteristic; Chamber width;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Smagorinsky, J. (1963). "General Circulation Experiments with the Primitive Equation. Mon. Weath", Rev., Vol 91, No 3, pp 99-164.
2 Marks, M. and Jarlan, G.E. (1968). "Experimental Study on a Fixed Perforated Breakwater", Proc. of 11th Int. Conf. Coastal Eng., ASCE, Vol 3, pp 1121-1140.
3 박우선, 전인식, 이달수 (1993). "유공방파제의 반사특성에 관한 수리실험", 한국해안.해양공학회지, 제4권, 제3호, pp 198-203.
4 서경덕, 지창환 (2006). "다열 커튼월-파일 방파제에 의한 규칙파의 반사 및 투과", 한국해안.해양공학회지, 제18권, 제2호, pp 97-111.
5 허동수, 이우동 (2007). "잠제 주변의 파고분포 및 흐름의 3차원 특성; PART I-해빈이 없을 경우", 대한토목학회논문집, 제27권, 제6B호, pp 689-701.
6 van Gent, M.R.A. (1995). Wave Interaction with Permeable Coastal Structures, Ph.D. Thesis, Delft University The Netherlands.
7 Ergun, S. (1952). "Fluid Flow Through Packed Columns", Chem Eng., Vol 48, No 2, pp 89-94.
8 Tanimoto, K., Haranaka, S., Takahashi, S., Komatsu, K., Todoroki, M. and Osato, M. (1976). "An Experimental Investigation of Wave Reflection, Overtopping and Wave Forces for Several Types of Breakwaters and Sea Walls", Tech. Note of Port and Harbour Res. Inst., Ministry of Transport, Japan, No 246, p 38 (in Japanese).
9 Jarlan, G.E. (1961). "A Perforated Vertical Wall Breakwater", The Dok and Harbor Authority, Vol 41, No 486, pp 394-398.
10 Christensen, E.D. and Deigaard, R. (2001). "Large Eddy Simulation of Breaking Waves", Coastal Eng., Vol 42, pp 53-86.   DOI   ScienceOn
11 Goda, Y. and Suzuki, Y. (1976). "Estimation of Incident and Reflected Waves in Random Wave Experiments", Proc. of 15th Int. Conf. Coastal Eng., ASCE, pp 828-845.
12 이종인, 조지훈 (2001). "종 SLIT형 케이슨 방파제의 반사특성", 한국해안.해양공학회지, 제13권, 제4호, pp 263-272.
13 Schumann, U. (1987). Direct and Large Eddy Simulation of Turbulence-Summary of the State of the Art 1987, Lecture Series 1987-2006, Introduction to the Modeling of Turbulence, Von Karman Institute for Fluid Dynamics CRhode Saint Genese, Belgium, pp 1-36.
14 Okayasu, A., Suzuki, T. and Matsubayashi, Y. (2005). "Laboratory Experiment and Three-Dimensional Large Eddy Simulation of Wave Overtopping on Gentle Slope Seawalls", Coastal Eng., Journal, Vol 47, No 2-3, pp 71-89.   DOI
15 서경덕, 오영민, 전인식, 이달수 (1992). "혼성방파제의 무공 및 유공 케이슨의 수리특성에 관한 실험", 한국해안.해양공학회지, 제18권, 제4호, pp 243-249.
16 허동수, 이우동, 배기성 (2008). "사각격자체계 수치모델에서의 경사면 처리기법에 관하여", 대한토목학회논문집, 제28권, 제5B호, pp 591-594.
17 Fugazza, M. and Natale, L. (1992). "Hydraulic Design of Perforated Breakwaters", Journal of Waterway, Port, Coastal, and Ocean Eng., ASCE, Vol 118, No 1, pp 1-14.   DOI
18 Sakakiyama, T. and Kajima, R. (1992). "Numerical Simulation of Nonlinear Wave Interacting with Permeable Breakwater", Proc. 23rd Int. Conf. Coastal Eng., ASCE, pp 1517-1530.
19 Terret, F.L., Osorio, J.D.C. and Lean, G.H. (1968). "Model Studies of a Perforated Breakwater", Proc. of 11th Int. Conf. Coastal Eng., ASCE, Vol 3, pp 1104-1120.
20 Liu, S. and Masliyah, J.H. (1999). "Non-linear Flows in Porous Media", J. Non-Newtonian Fluid Mech., Vol 86, pp 229-252.   DOI   ScienceOn