하구에서 파랑-흐름 상호작용이 3차원 흐름특성에 미치는 영향
Effects of Wave-Current Interactions on 3-D Flow Fields in a River Mouth
0
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
Most of the studies on the hydraulic characteristics of wave-current interaction have used 2-D hydraulic experiments or 2-D numerical simulations. However, it is difficult to understand the wave-current interaction found in actual estuaries using these. Therefore, a numerical water tank was constructed in this study to perform simulations involving a 3-D river mouth. The result showed a change in the water surface at the river mouth from the wave-current interaction. With an increase in the ratio (Vc/Ci) between the river current and wave celerity, the wave height and mean water level of the river increased at the wave and current meeting point. A higher Vc/Ci caused a stronger wave-current interaction and increased the turbulence kinetic energy. Thus, the wave height attenuation became larger by the wave-current interaction with a higher Vc/Ci. In addition, it was possible to understand the flow characteristics in the vicinity of the river mouth as a result of the wave-current interaction using the mean flow and mean time-averaged velocity at the mid-cross section of river.
Abstract
Most of the studies on the hydraulic characteristics of wave-current interaction have used 2-D hydraulic experiments or 2-D numerical simulations. However, it is difficult to understand the wave-current interaction found in actual estuaries using these. Therefore, a numerical water tank was constructed in this study to perform simulations involving a 3-D river mouth. The result showed a change in the water surface at the river mouth from the wave-current interaction. With an increase in the ratio (Vc/Ci) between the river current and wave celerity, the wave height and mean water level of the river increased at the wave and current meeting point. A higher Vc/Ci caused a stronger wave-current interaction and increased the turbulence kinetic energy. Thus, the wave height attenuation became larger by the wave-current interaction with a higher Vc/Ci. In addition, it was possible to understand the flow characteristics in the vicinity of the river mouth as a result of the wave-current interaction using the mean flow and mean time-averaged velocity at the mid-cross section of river.
참고문헌 (30)
- Baddour, R. E., "On the Interaction between Waves and Currents", Ocean Engineering, 17, pp.1~21 (1990)
- Brackbill, J. U., "A Continuum Model for Modeling Surface Tension", Journal of Computational Physics, 100, pp.335~354 (1992)
- Christensen, E. D., "Large Eddy Simulation of Spilling and Plunging Breakers", Coastal Engingeering, 53, pp.463~485 (2006)
- de Brye, B., "A Finite-Element, Multi-Scale Model of the Scheldt Tributaries, River, Estuary and ROFI", Coastal Engineering, 57, pp.850~863 (2010)
- Germano, M., "A Dynamic Subgrid-Scale Eddy Viscosity Model", Physics of Fluids, 3, pp.1760~1765 (1991)
- 허동수, "사각격자체계 수치모델에서의 경사면 처리기법에 관하여", 대한토목학회 논문집B, 28(5), pp.591~594 (2008), 대한토목학회
- Isaasson, M., "Time-Domain Solution for Wave-Current Interactions with a Two-Dimensional Body", Applied Ocean Research, 15, pp.39~52 (1993)
- Iwasaki, T., "Energy Damping of Wave Propagating Against Currents (2)", Proceedings of Coastal Engineering Conference, 18, pp.55~59 (1971), JSCE
- 김경호, "파랑과 정상흐름의 공존역에서의 해저관로 주변의 국부세굴", 한국해안·해양공학회논문집, 20(5), pp.510~521 (2008), 한국해안,해양공학회
- Komatsu, K., "Fundamental Study on Wave-Current Interaction", Master, pp.2005
- Lee, W. D., "Three-Dimensional Hydrodynamic Characteristics on Wave-Current Interaction with Density Difference in the Vicinity of a River Mouth", Ph.D., pp.2012
- 이우동, "파랑-흐름의 상호작용 하에서 지형변동에 관한 3차원 연성 수치모델의 개발", 대한토목학회논문집(국문), 34(5), pp.1463~1476 (2014), 대한토목학회[DOI]
- 이우동, "파랑-흐름의 상호작용에 의한 파랑변형 메커니즘 분석", 대한토목학회논문집(국문), 36(4), pp.645~650 (2016), 대한토목학회[DOI]
- Lee, W.D., "Effect of Crossing Angle on Interaction between Wave and Current in the River Mouth", Journal of Japan Society of Civil Engineers, Ser. B3, 67, pp.256~261 (2011)
- Lee, W. D., "Charactertictis of Wave Ppropagation under Wave-Current Interaction with Density Difference between Wavne and Current", Journal of Japan Society of Civil Engineers, Ser. B3, 68, pp.774~779 (2012)
- Lee, W. D., "An Experimental Study on Spatial Distribution of Wave Heights and Velocities under Wave-Current Interaction in an Estuary", Journal of Japan Society of Civil Engineers, Ser. B2, 68, pp.431~435 (2012)
- Lesser, G. R., "Development and Validation of a Three-Dimensional Morphological Model", Coastal Engineering, 51, pp.883~915 (2004)
- Lilly, D. K., "A Proposed Modification of the Germano Subgrid-Scale Closure Method", Physics of Fluids A, 4, pp.633~635 (1992)
- Lin, M. C., "Boundary Element Analysis of Wave-Current Interaction around a Large Structure", Engineering Analysis with Boundary Elements, 14, pp.325~334 (1994)
- Mizutani, N., "Numerical Analysis of Nonlinear Wave-Current Interaction in Side Harbor", Proceedings of Coastal Engineering Conference, 49, pp.51~55 (2002), JSCE
- Olabarrieta, M., "Effects of Wave-Current Interaction on the Current Profile", Coastal Engineering, 57, pp.643~655 (2010)
- Sakai, S., "Effects of Opposing Current on Wave Transformation on Sloping Sea bed", Proceedings of the 19th International Conference on Coastal Engineering, pp.1219~1232 (1984), ICCE, ASEC
- Shi, F., "A Fully Nonlinear Boussinesq Model in Generalized Curvilinear Coordinates", Coastal Engineering, 42, pp.337~358 (2001)
- Smagorinsky, J., "General Circulation Experiments with the Primitive Rquations. I. The Basic Experiment", Monthly Weather Review, 91(3), pp.99~164 (1963)
- Wave Breaking on a Current at an Idealized Inlet, "Smith, J. M.", US Army Corps of Engineers, ~, pp.Technical report, CHL-98-31 (1998)
- Sutherlanda, J., "Evaluation of Coastal Area Modelling Systems at an Estuary Mouth", Coastal Engineering, 51, pp.119~142 (2004)
- Son, S., "Interaction of Dispersive Water Waves with Weakly Sheared Currents of Arbitrary Profile", Coastal Engineering, 90, pp.64~84 (2014)
- Teles, M. J., "Numerical Modelling of Wave Current Interactions at a Local Scale", Ocean Modelling, 68, pp.72~87 (2013)
- Umeyama, M., "Reynolds Stresses and Velocity Distributions in a Wave-Current Coexisting Environment", Journal of Waterway, Port, Coastal, and Ocean Engineering, 131, pp.203~212 (2005), ASCE
- Zhao, R., "Interaction between Waves and Current on a Two-Dimensional Body in the Free Surface", Applied Ocean Research, 2, pp.87~99 (1988)