배후수위 저감효과를 가진 신기능 잠제의 개발
Development of New Type of Submerged Breakwater for Reducing Mean Water Level behind Structure
2
조회
0
다운로드
6
인용
0
참고문헌
키워드
초록
Typically, a submerged breakwater is one of the good scene-friendly coastal structures used to reduce wave energy and coastal erosion. However, sometimes, a submerged breakwater also has a negative aspect in that a strong rip current occurring around an open inlet due to a difference in mean water levels on the front and rear sides of the structure leads to scouring. Such scouring has a bad effect on its stability. In order to eliminate this kind of demerit, this study investigated four new types of submerged breakwaters with drainage channels. First, hydraulic experiments were performed the typical and new structures. Then, the wave height and mean water level distributions around the structures were examined using the experimental results. Finally, it was revealed that the new type of submerged breakwater could efficiently reduce the mean water level on its rear side. In particular, in the case of new-type submerged breakwater 2, an average reduction efficiency of 71.2% for the difference between the mean water levels at the front and rear sides was shown in comparison with the typical one.
Abstract
Typically, a submerged breakwater is one of the good scene-friendly coastal structures used to reduce wave energy and coastal erosion. However, sometimes, a submerged breakwater also has a negative aspect in that a strong rip current occurring around an open inlet due to a difference in mean water levels on the front and rear sides of the structure leads to scouring. Such scouring has a bad effect on its stability. In order to eliminate this kind of demerit, this study investigated four new types of submerged breakwaters with drainage channels. First, hydraulic experiments were performed the typical and new structures. Then, the wave height and mean water level distributions around the structures were examined using the experimental results. Finally, it was revealed that the new type of submerged breakwater could efficiently reduce the mean water level on its rear side. In particular, in the case of new-type submerged breakwater 2, an average reduction efficiency of 71.2% for the difference between the mean water levels at the front and rear sides was shown in comparison with the typical one.
참고문헌 (23)
- Caceres, I., "Quantification of Changes in Current Intensities Induced by Wave Overtopping around Low Crested Structures", Coastal Engineering, 55, pp.113~124 (2008)
- Calabrese, M., "Large Scale Experiments on the Behaviour of Low Crested and Submerged Breakwaters in Presence of Broken waves", Proceedings of the 28th International Conference on Coastal Engineering, pp.1900~1912 (2002), ASCE
- Chen, J., "Numerical Study on the Characteristics of Flow Field and Wave Propagation near Submerged Breakwater on Slope", Acta Oceanologica Sinica, 29(1), pp.88~99 (2010)
- d'Angremond, K., "Wave Transmission at Low-Crested Structures", Proceedings of the 25th International Conference on Coastal Engineering, pp.3305~3318 (1996), ASCE
- Garcia, N., "2-D Numerical Analysis of Near-Field Flow at Low-Crested Permeable Breakwaters", Costal Engineering, 51(10), pp.991~1020 (2004)
- Goda, Y., "New Formulation of Wave Transmission over and through Low-Crested Structures", Proceedings of the 31st International Conference on Coastal Engineering, pp.3530~3541 (2008), ASCE
- Hur, D. S., "Deformation of Multi-Direction Random Waves Passing over an Impermeable Submerged Breakwaters Installed on a Sloping Bed", Ocean Engineering, 31(10), pp.1295~1311 (2004)
- 허동수, "경사수역에 설치된 잠제 주변의 유속장과 와의 발생에 대한 수치모의", 한국해안·해양공학회논문집, 15(3), pp.151~158 (2003), 한국해안,해양공학회
- Hur, D. S., "Effect of the Slope Gradient of Submerged Breakwaters on Wave Energy Dissipation", Engineering Applications of Computational Fluid Mechanics, 5(1), pp.83~98 (2011)
- Hur, D. S., "Three-Dimensional Flow Characteristics around Permeable Submerged Breakwaters with Open Inlet", Ocean Engineering, 44, pp.100~116 (2012)
- Hur, D. S., "Characteristics of Wave Run-up Height on a Sandy Beach behind Dual-Submerged Breakwaters", Ocean Engineering, 45, pp.38~55 (2012)
- 허동수, "신기능 잠제의 흐름 제어 기능에 관한 수치적 연구", 한국해안·해양공학회논문집, 22(3), pp.181~190 (2010), 한국해안,해양공학회
- 허동수, "잠제가 설치 된 부산 송도해수욕장의 해빈류 예측에 관한 3차원 수치해석기법(LES-WASS-3D)의 적용", 한국해양공학회지, 27(4), pp.14~21 (2013), 한국해양공학회
- Hsu, T. W., "Using RANS to Simulate Vortex Generation and Dissipation around Impermeable Submerged Double Breakwaters", Costal Engineering, 51(7), pp.557~579 (2004)
- Johnson, H. K., "Modelling of Waves and Currents around Submerged Breakwaters", Costal Engineering, 52, pp.949~969 (2005)
- Johnson, H. K., "Wave Modelling in the Vicinity of Submerged Breakwaters", Costal Engineering, 53, pp.39~48 (2006)
- Kramer, M., "Laboratory Experiments on Low-Crested Breakwaters", Costal Engineering, 52(10), pp.867~885 (2005)
- Seabrook, S. R., "Wave Transmission at Submerged Rubble Mound Breakwaters", Proceedings of the 26th International Conference on Coastal Engineering, pp.2000~2013 (1998), ASCE
- Sharifahmadian, A., "A 3D Numerical Model of Nearshore Wave Field behind Submerged Breakwaters", Coastal Engineering, 83, pp.190~204 (2014)
- van der Meer, J. W., "Wave Transmission and Reflection at Low-Crested Structures:Design Formulae, Oblique Wave Attack and Spectral Change", Coastal Engineering, 52(10), pp.915~929 (2005)
- Zanuttigh, B., "Numerical Modelling of the Morphological Response Induced by Low-Crested Structures in Lido di Dante, Italy", Costal Engineering, 54(1), pp.31~47 (2007)
- Zhang, Z. Q., "Flow Field Analysis of Submerged Horizontal Plate Type Breakwater", China Ocean Engineering, 27, pp.821~828 (2013)
- Zysermana, J. A., "Analysis of Far-Field Erosion Induced by Low-Crested Rubble-Mound Structure", Costal Engineering, 52(10), pp.977~994 (2005)