Browse > Article
http://dx.doi.org/10.9765/KSCOE.2018.30.4.166

Numerical Simulation of Three-Dimensional Wave-Current Interactions Due to Permeable Submerged Breakwaters by Using olaFLOW  

Lee, Kwang-Ho (Dept. of Energy and Plant Eng., Catholic Kwandong University)
Bae, Ju-Hyun (Dept. of Civil and Environmental Eng., Graduate School, Korea Maritime and Ocean University)
An, Sung-Wook (Dept. of Civil and Environmental Eng., Graduate School, Korea Maritime and Ocean University)
Kim, Do-Sam (Dept. of Civil Eng., Korea Maritime and Ocean Univ.)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.30, no.4, 2018 , pp. 166-179 More about this Journal
Abstract
This study aims at numerically investigating the water-surface characteristics such as wave height distribution depending on the current direction around the three-dimensional permeable submerged breakwaters in wave-current coexisting field which has not been considered in detail so far. In addition, the characteristics of the velocity field including the average flow velocity, longshore current and turbulent kinetic energy, which act as the main external forces of formation of salient, are also examined. For numerical analysis, olaFlow which is open source code of CFD was used and the numerical tests included different types of target waves, both regular waves and irregular waves. Numerical results indicated that wave height variation with wave following or opposing a current behind the submerged breakwater is closely related to turbulent kinetic energy. Furthermore, it was found that weaker longshore currents are formed under wave-current coexisting field compared to the non-current conditions, and transport flow is attenuated. As a result, it was possible to understand the influence of current existence and direction (following and opposing) on the formation of the salient formed behind the submerged breakwaters.
Keywords
olaFLOW; 3-dimensional permeable submerged breakwater; wave-current interaction; wave height; longshore current; turbulent kinetic energy;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 Goda, Y. (2000). Random seas and design of maritime structures, World Scientific Publishing, Singapore.
2 Goda, Y. (1988). Statistical variability of sea state parameters as a function of wave spectrum. Coastal Engineering in Japan, JSCE, 31(1), 39-52.   DOI
3 Higuera, P., Losada, I.J. and Lara, J.L. (2015). Three-dimensional numerical wave generation with moving boundaries. Coastal Engineering, 101, 35-47.   DOI
4 Jensen, B., Jacobsen, N.G. and Christensen, E.D. (2014). Investigations on the porous media equations and resistance coefficients for coastal structures. Coastal Engineering, 84, 56-72.   DOI
5 Johnson, H.K., Karamabs, T.V., Avgeris, I., Zanuttigh, B., Gonzalez-Marco, D. and Caceres, I. (2005). Modeling of waves and currents around submerged breakwaters. Coastal Engineering, 52(10), 949-969.   DOI
6 Lee, K.H., Bae, J.H., An, S.W. and Kim, D.S. (2017a). Characteristics of velocity fields variations around 3-dimensional permeable submerged breakwaters under the conditions of salient formation. Journal of Korean Society of Coastal and Ocean Engineers, 29(6), 399-409 (in Korean).   DOI
7 Lee, K.H., Bae, J.H., An, S.W. and Kim, D.S. (2017b). Characteristics of water surface variations around 3-dimensional permeable submerged breakwaters under the conditions of salient formation. Journal of Korean Society of Coastal and Ocean Engineers, 29(6), 335-349 (in Korean).   DOI
8 Lee, K.H., Bae, J.H., An, S.W. and Kim, D.S. (2018). 3D Numerical simulation of water surface variations and velocity fields around permeable submerged breakwaters under irregular waves. Journal of Korean Society of Coastal and Ocean Engineers, 30(4), 153-165 (in Korean).   DOI
9 Lee, K.H., Bae, J.H., An, S.W., Kim, D.S. and Bae, K.S. (2016). Numerical analysis on wave characteristics around submerged breakwater in wave and current coexisting field by OLAFOAM. Journal of Korean Society of Coastal and Ocean Engineers, 28(6), 332-349 (in Korean).   DOI
10 Ranasinghe, R., Larson, M. and Savioli, J. (2010). Shoreline response to a single shore-parallel submerged breakwater. Coastal Engineering, 57(11), 1006-1017.   DOI
11 Ranasinghe, R. and Turner, I.L. (2006). Shoreline response to submerged structures: a review. Coastal Engineering, 53(1), 65-79.   DOI
12 Sharifahmadian, A. and Simons, R.R. (2014). A 3D numerical model of nearshore wave field behind submerged breakwaters. Coastal Engineering, 83, 190-204.   DOI
13 Caceres, I., Stive, M.J. and Sanchez-Arcilla, A. (2008). Quantification of changes in current intensities induced by wave overtopping around low-crested stuctures. Coastal Engineering, 55(2), 113-124.   DOI
14 Bellotti, G. (2004). A simplified model of rip currents systems around discontinuous submerged barriers. Coastal Engineering, 51(4), 323-335.   DOI
15 Billstein, M., Svensson, U. and Johansson, N. (1999). Development and validation of a numerical model of flow through embankment dams-comparisons with experimental data and analytical solutions. Transport in Porous Media, 35(3), 395-406.   DOI
16 Black, K.P. and Andrews, C.J. (2001). Sandy shoreline response to offshore obstacles Part 1: Salient and tombolo geometry and shape. J. Coastal Research, 82-93.