Browse > Article
http://dx.doi.org/10.26748/KSOE.2020.066

Analysis of Wave Transmission Characteristics on the TTP Submerged Breakwater Using a Parabolic-Type Linear Wave Deformation Model  

Jeong, Jin-Hwan (School of Civil, Architecture and Environmental System Engineering, Sungkyunkwan University)
Kim, Jin-Hoon (Department of Earth and Environmental Engineering, Kangwon National University)
Lee, Jung-Lyul (Graduate School of Water Resource, Sungkyunkwan University)
Publication Information
Journal of Ocean Engineering and Technology / v.35, no.1, 2021 , pp. 82-90 More about this Journal
Abstract
Owing to the advantages of assuring the best views and seawater exchange, submerged breakwaters have been widely installed along the eastern coast of Korea in recent years. It significantly contributes to promoting the advancement of shorelines by partially inhibiting incident wave energy. Observations were carried out by a pressure-type wave gauge in the Bongpo Beach to evaluate the coefficients of wave transmission via a submerged breakwater, and the results obtained were compared with those of existing conventional equations on the transmission coefficient derived from hydraulic experiments. After reviewing the existing equations, we proposed a transmission coefficient equation in terms of an error function. Although it exhibited robust relationships with the crest height and breaking coefficient, deviations from the observed data were evident and considered to be triggered by the difference in the incident wave climate. Therefore, in this study, we conducted a numerical experiment to verify the influence of wave period on the coefficients of wave transmission, in which we adopted a parabolic-type mild-slope equation model. Consequently, the deviation from calculated results appears to practically cover all deviation range in the observed data. The wave period and direction of the incident wave increased, the transmission coefficient decreased, and the wave direction was determined to demonstrate a relatively significant influence on the transmission coefficient. It was inferred that this numerical study is expected to be used practically in evaluating the design achievement of the submerged breakwater, which is adopted as a countermeasure to coastal beach erosion.
Keywords
Submerged breakwater; Wave transmission coefficient; Error function; Field observation; Wave deformation model;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Ahrens, J.P. (1987). Characteristics of Reef Breakwaters (CERC-87-17). US Army Corps of Engineers.
2 Battjes, J.A. (1974). Surf Similarity. Coastal Engineering Proceedings, 1(14), 466-480. http://doi/org/10.9753/icce.v14.26   DOI
3 d'Angremond, K., Van der Meer, J.W., & De Jong, R.J. (1996). Wave Transmission at Low-Crested Structures. Proceedings of 25th International Conference on Coastal Engineering, ASCE, 3305-3318. https://doi.org/10.1061/9780784402429.187   DOI
4 Lee, J.L. (1994). Quasi-3D Wave-induced Circulation Model. Journal of The Korean Society of Coastal and Ocean Engineers, 6(4), 459-471.
5 Lee, J.L. (1998). A High-accuracy Approach for Modeling Flow-dominated Transport. Transactions on Ecology and the Environment, 18, 277-286.
6 Lee, J.L., & Lee, D.H. (2006). Introduction of WADEM (WAve DEformation Model) Operated with GUI. Proceedings of Fall Conference of Korean Society for Marine Environment & Energy, 155-162.
7 Madsen, P.A. & Larsen, J. (1987). An Efficient Finite-difference Approach to the Mild-slope Equation. Coastal Engineering, 11(4), 329-351. https://doi.org/10.1016/0378-3839(87)90032-9   DOI
8 Radder, A.C. (1979). On the Parabolic Equation Method for Water-wave Propagation. Journal of Fluid Mechanics, 95(1), 159-176.   DOI
9 Ranasinghe, R., & Turner, I.L. (2006). Shoreline Response to Submerged Structures. Coastal Engineering, 53(1), 63-79. https://doi.org/10.1016/j.coastaleng.2005.08.003   DOI
10 Seabrook, S.R., & Hall, K.R. (1998). Wave Transmission at Submerged Rubble Mound Breakwaters. Proceeding of 26th International Conference on Coastal Engineering, Copenhagen, Denmark, 2000-2013. https://doi.org/10.1061/9780784404119.150   DOI
11 Seelig, W.N. (1980). Estimation of Wave Transmission Coefficients for Overtopping of Impermeable Breakwaters. CERC Coastal Engineering Technical Aid, 80(7).
12 Shin, M.S., Lee, H.J., & Park, K.Y. (2008). An Experimental Study on Wave Decrease Effect by Porosity in Submerged Breakwater. Proceeding of Conference of Korean Society of Civil Engineers, 1136-1145.
13 Takayama, T., Nagai, K., & Sekiguchi, T. (1985). Irregular Wave Experiments on Wave Dissipation Function of Submerged Breakwater with Wide Crown. Proceedings of 32th Japanese Conference on Coastal Engineering, JSCE, 32, 545-549.
14 US Army Corps of Engineers. (1984). Shore Protection Manual (4th Ed.). Washington D.C, 1-337.
15 Van der Meer, J.W., Briganti, R., Zanuttigh, B., & Wang, B. (2005). Wave Transmission and Reflection at Low-crested Structures: Design Formulae, Oblique Wave Attack and Spectral Change. Coastal Engineering, 52(10-11), 915-929. https://doi.org/10.1016/j.coastaleng.2005.09.005   DOI
16 Van der Meer, J.W., & Daemen, I.F.R. (1994). Stability and Wave Transmission at Low Crested Rubble Mound Structures. Jorunal of Waterway, Port Coastal and Ocean Engineering, 120(1), 1-19. https://doi.org/10.1061/(ASCE)0733-950X(1994)120:1(1)   DOI