- Volume 24 Issue 3
Numerical Simulation of Water-Exchange due to Overtopped Breakwaters
월파허용방파제에 의한 해수교환 수치모의
- Kim, In-Ho (Department of Constructional Disaster Prevention Engineering, Kangwon National Univ.) ;
- Lee, Jung-Lyul (School of Civil and Environmental Engineering, Sungkyunkwan Univ.)
- Received : 2010.05.06
- Accepted : 2010.06.18
- Published : 2010.06.30
This study presents a numerical simulation of sea water-exchange as a preliminary accessing tool of water quality in the protected shore behind a overtopped breakwater. The overtopped breakwater is taken into account for a safe swimming and beach protection. The overtopping rate is calculated by empirical models and the consequent currents, known as wave-induced currents, are calculated under the conditions of H.W.O.S.T and L.W.O.S.T. The rate of sea water exchange is used to evaluate the characteristics of sea water exchange and calculated through the simulation processes such as advective discharging through the outlets and random-walking diffusion of particles released within a basin. The numerical results show that the overtopped waves sufficiently improve the water exchange without healthless stagnation of contaminated mass and the consequent currents are not too strong for swimming.
Wave overtopping;Water-exchange;Overtopped breakwater;Random-walking method;Wave-induced current;H.W.O.S.T;L.W.O.S.T
Supported by : 강원대학교
- 곽문수, 이홍규, 박성윤, 편종근 (2006). "시간의존 완경사 방정식을 이용한 월파량 산정 방법", 한국해안.해양공학회, 제18권, 제4호, pp 372-382.
- 이정렬, 김인호 (2004). "항만의 해수교환 능력의 평가 지표", 한국해양공학회지, 제18권, 제6호, pp 22-28.
- Bradbury, A.P. and Allsop, W. (1988). Hydraulic effects of breakwater crown halls, In Proc. of Conf. on Design of Breakwaters, Institution of Civil Engineers, London, UK, pp 385-396.
- CEM (2003). EM1110 Coastal Engineering Manual, US Army Corps of Engineers.
- Chorin, A.J. (1978). "Vortex Sheet Approx. of Boundary Layers", J. Compt. Phys., Vol 27, pp 428-442. https://doi.org/10.1016/0021-9991(78)90019-0
- Department of Land and Natural Resources (2005). Kuhio Beach Improvements –- Facts on Beach History and Engineering Design.
- Ebersole, B.A. and Dalrymple, R.A. (1980). Numerical modeling of nearshore circulation, Proceedings of the 7th Coastal Engineering, 2710-2725.
- EurOtop (2007). European Manual for the Assessment of Wave Overtopping, Eds. Pullen, T., Allsop, N.W.H., Bruce, T., Kortenhaus, A., Schu''ttrumpf, H. & van der Meer, J.W. www.overtopping-manual.com.
- Geeraerts, De Rouck, Beels, Gysens, De Wolf (2006). Reduction of wave overtopping at seadikes: Stilling Wave Basin. Proc. Int. Conf. Coastal Engineering, 2006. San Diego, USA, pp 4680-4691.
- Kabiling, M.B. and Sato, S. (1993). "Two-Dimensional Nonlinear Dispersive Wave-Current and Three-Dimensional Beach Deformation Model", Coastal Engrg. in Japan, Vol 36, pp 196-212.
- Kikkawa, H., Shi-Igai, H. and Kono, T. (1968). "Fundamental Study of Wave Over-Topping on Levees", Coastal Engineering in Japan, Vol 11.
- Kofoed, J.P. (2002). Wave overtopping of Marine Structures – Utilization of Wave Energy, Aalborg University.
- Lee, J.L. and Lee, D.Y. (2001). An Operational Prediction System for Cohesive Sediment Transport in the West and South Coast of Korea, J. Coastal Research, SI().
- Lee, J.L. and Park, C.S. (2001). "Development of Weakly Nonlinear Wave Model and its Numerical Simulation", J. the Korean Society of Coastal and Ocean Engineers, Vol 12, No 4, pp 181-189.
- Owen, M.W. (1980). Design of seawalls allowing for wave overtopping, HR-Wallingford, UK, Technical Report EX-924.
- Owen, M.W. (1982). "The Hydraulic Design of Seawall Profiles", Proc. Conf. on Shoreline Protection, ICE, London, UK, pp 185-192.
- Shore Protection Manual (SPM) (1984). US Army Coastal Engineering Research Center, Vicksburg, Mississippi, USA.
- TAW (2002). Technical Report Wave Run-up and Wave Overtopping at Dikes, Technical Advisory Committee on Flood Defence, Delft, 2002.