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http://dx.doi.org/10.5322/JES.2006.15.9.881

Numerical Analysis on the Beach Erosion Prevention Capability of Submerged Breakwaters  

Kim, In-Chul (Department of Civil Engineering Dongseo University)
Yoon, Jong-Sung (Department of Civil Engineering Inje University)
Publication Information
Journal of Environmental Science International / v.15, no.9, 2006 , pp. 881-886 More about this Journal
Abstract
The purpose of this research is to examine the beach erosion prevention capability of submerged breakwaters under wave energy condition. To accomplish this objective, the computational domain was divided into two do-mains : the large and the detailed domain for the Song-Do beach. For each computational domain, numerical models for calculating transformation, wave induced current and beach erosion were used and also these numerical models were carefully applied to three experimental cases such as 1) the present beach condition, 2) the condition for which submerged breakwaters are installed about 240m from the shoreline of beach enlarged by artificial nourishments. The results of this research show that if storm waves attack the present beach, the erosion occurs widely all over the beach. However, when the submerged breakwaters are installed in addition to the artificial nourishments, storm waves can be adequately controlled and strong wave induced currents occur only around the submerged breakwaters resulting in the beach evolution appearing locally only at the western end of the beach.
Keywords
Beach erosion; Song-Do beach; Submeraed breakwaters; Wave transformation; Wave induced current; Artificial nourishments;
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  • Reference
1 Sawaragi, T., J. S. Lee and I. Deguchi, 1984, A Study on the wave induced current and the change of topography around estuary, Japanese Conf. on Coastal Eng., JSCE, 411-415
2 度邊晃, 1984, 丸山康樹, 淸水隆夫, 神山勉, 構造物設置に伴う三次元海濱變形の數値豫測, 第31會 海岸工學講演論文集, 406-410
3 부산광역시 서구, 2000, 송도해수욕장 일원 종합개발기본계획 및 사업타당성조사(부록), 부산광역시 서구청
4 Maruyama, K. and R. Kajima., 1985, Two dimensional wave calculation method based on unsteady mild slope equation, Rep. Electric Central Res. Inst. No.384041
5 Deguchi, I., 1984, A Basic study on the sediment transport and beach topography change, Ph.D. Thesis, Dniv. of Osaka
6 부산광역시 서구, 2002, 송도일원 침식방지공사 기본 및 실시설계용역 보고서, 부산광역시 서구청
7 Karlsson, T., 1969, Refraction of continuous ocean wave spectra, Proc. ASCE, 95, No.WW4, 437-448
8 Tanimoto, K. and K. Kobune, 1975, Computation of waves in a habor basin by a numerical wave analysis method, Proc. 22nd Japanese Conf. on Coastal Eng., JSCE, 249-253
9 Watanabe, A. and K. Maruyama, 1986, Numerical modeling of nearshore wave field under combined referaction, diffraction and breaking, Coastal Eng., 29, 19-39   DOI