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http://dx.doi.org/10.5574/KSOE.2016.30.6.484

Numerical Simulation of Local Scour in Front of Impermeable Submerged Breakwater Using 2-D Coupled Hydro-morphodynamic Model  

Lee, Woo-Dong (Institute of Marine Industry, Gyeongsang National University)
Lee, Jae-Cheol (Harbor Design Division, Hyein Engineering & Construction)
Jin, Dong-Hwan (Department of Coastal Management, GeoSystem Research Corporation)
Hur, Dong-Soo (Department of Ocean Civil Engineering, Gyeongsang National University)
Publication Information
Journal of Ocean Engineering and Technology / v.30, no.6, 2016 , pp. 484-497 More about this Journal
Abstract
In order to understand the characteristics of the topography change in front of an impermeable breakwater, a coupled model for a two-way analysis of the existing LES-WASS-2D and newly developed morphodynamic model was suggested. A comparison to existing experimental results revealed that the results computed using the 2-D hydro-morphodynamic model were in good agreement with the experimental results for the wave form, pore water pressure in the seabed, and topographical change in front of a submerged breakwater. It was shown that the two-way model suggested in this study is applicable to a morphological change in the seabed around a submerged breakwater. Then, using the numerical results, the topographical changes in front of an impermeable submerged breakwater were examined in relation to partial standing waves. Moreover, the characteristics of the local scour depths in front of them are also discussed in relation to incident wave conditions, sediment qualities, and submerged breakwater shapes.
Keywords
Bed-load sediment; Suspended sediment; Hydro-morphodynamic model; Local scour; Submerged breakwater;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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1 Silvester, R., 1990. Scour around Breakwaters and Submerged Structures. Handbook of Coastal and Ocean Engineering, 2, 959-996.
2 Silvester, R., Hsu, J.R.C., 1989. Sines Revisited. Journal of Waterway, Port, Coastal and Ocean Engineering, 115, 327-344.   DOI
3 Smagorinsky, J., 1963. General Circulation Experiments with the Primitive Equation. Monthly Weather Review, 91(3), 99-164.   DOI
4 Soulsby, R.L., 1997. Dynamics of Marine Sands. Thomas Relford Publications, 249.
5 Soulsby, R.L., Whitehouse, R.J.S.W., 1997. Threshold of Sediment Motion in Coastal Environments. Pacific Coasts and Ports '97: Proceedings of the 13th Australasian Coastal and Ocean Engineering Conference and the 6th Australasian Port and Harbour Conference, 1, 149-154.
6 Sutherland, J., O'Donoghue, T., 1998. Wave Phase Shift at Coastal Structures. Journal of Waterway, Port, Coastal, and Ocean Engineering, 124, 90-98.   DOI
7 Sumer, B.M., Fredsoe, J., 1997. Scour at the Head of a Vertical-Wall Breakwater. Coastal Engineering, 29, 201-230.   DOI
8 Sumer, B.M., Fredsoe, J., 2000. Experimental Study of 2D Scour and Its Protection at a Rubble-Mound Breakwater. Coastal Engineering, 40, 59-87.   DOI
9 Sumer, B.M, Fredsoe, J., 2002. The Mechanics of Scour in the Marine Environment. World Scientific, Advaned Series on Ocean Eingineering, 17, 519.
10 van Rijn, L.C., 1984a. Sediment Transport, Part I: Bed Load Transport. Journal of Hydraulic Engineering, 110, 1431-1456.   DOI
11 van Rijn, L.C., 1984b. Sediment Transport, Part II: Suspended Load Transport. Journal of Hydraulic Engineering, 110, 1613-1641.   DOI
12 van Rijn, L.C., Walstra, D.J.R., 2003. Modelling of Sand Transport in DELFT3D. WL|Delft Delft Hydraulics Report Z3624, Delft University of Technology, The Netherlands.
13 Xie, S.L., 1981. Scouring Patterns in Front of Vertical Breakwaters and Their Influences on the Stability of the Foundation of the Breakwaters. Report, Department of Civil Engingeering, Delft University of Technology, The Netherlands, 61.
14 Xiong, Y., 2010. Coupling Sediment Transport and Water Quality Models. Ph.D. Thesis, Mississippi State University, USA, 275.
15 Cheng, N.S., 2008. Formulas for Friction Factor in Transitional Regimes. Journal of Hydraulic Engineering, 134, 1357-1362.   DOI
16 Bagnold, R.A., 1954. Experiments on a Gravity-Free Dispersion of Large Solid Spheres in a Newtonian Fluid under Shear. Proceedings of the Royal Society of London, 225, 49-63.   DOI
17 Brackbill, J.U., Kothe, D.B., Zemach, C., 1992. A Continuum Model for Modeling Surface Tension. Journal of Computational Physics, 100, 335-354.   DOI
18 Carter, T.G., Liu, P.L-F., Mei, C.C., 1973. Mass Transport by Waves and Offshore Sand Bedforms. Journal of the Waterways Harbors and Coastal Engineering Division, 99, 165-184.
19 Cheng, N.S., Chiew, Y.M., 1998. Modified Logarithmic Law for Velocity Distribution Subjected to Upward Seepage. Journal of Hydraulic Engineering, 124, 1235-1241.   DOI
20 Einstein, H.A., Chien, N., 1955. Effects of Heavy Sediment Concentration near the Bed on Velocity and Sediment Distribution. U.S. Army Engineer Division, Missouri River, MRD Sediment Series, 8, 78.
21 Ford D.E., Johnson L.S., 1986. An Assessment of Reservoir Mixing Process. Technical Report E-86-7, U.S. Army Engineers Waterways Experiment Station, Vicksburg, 147.
22 Germano, M., Piomelli, U., Moin, P., Cabot, W.H., 1991. A Dynamic Subgrid-Scale Eddy Viscosity Model. Physics of Fluids, 3, 1760-1765.   DOI
23 Hsu, J.R.C., Silvester, R., 1989. Model Test Results of Scour along Breakwaters. Journal of Waterway, Port, Coastal and Ocean Engineering, 115, 66-85.   DOI
24 Hughes, S.A., Fowler, J.E., 1991 Wave-Induced Scour Prediction at Vertical Walls. Procceding of Coastal Sediments '91, Seattle, ASCE, 2, 1886-1900.
25 Hur, D.S., Lee, W.D., Bae, K.S., 2008. On Reasonable Boundary Condition for Inclined Seabed/Structure in Case of the Numerical Model with Quadrilateral Mesh System. Journal of The Korean Society of Civil Engineers, 28(5B), 591-594(in Korean).
26 Hur, D.S., Lee, K.H., Choi, D.S., 2011. Effect of the Slope Gradient of Submerged Breakwaters on Wave Energy Dissipation. Engineering Applications of Computational Fluid Mechanics, 5, 83-98.   DOI
27 Hur, D.S., Jeon, H.S., 2011. Development of Numerical Model for Scour Analysis under Wave Loads in Front of an Impermeable Submerged Breakwater. Journal of The Korean Society of Civil Engineers, 31(5B), 483-489(in Korean).
28 Lambe, T.W., Whitman, R.V., 1969. Soil Mechanics. John Wiley & Sons, New York, 553.
29 Lee, W.D., Hur, D.S., Kim, H.S., Jo, H.J., 2016. Numerical Analysis on Self-Burial Mechanism of Submarine Pipeline with Spoiler under Steady Flow. Journal of Korean Society of Coastal and Ocean Engineers, 28(3), 146-159(in Korean).   DOI
30 Lee, W.D., Hur, D.S., 2014. Development of a 3-D Coupled Hydro-Morphodynamic Model between Numerical Wave Tank and Morphodynamic Model under Wave-Current Interaction. Journal of The Korean Society of Civil Engineer, 34(5), 1463-1476(in Korean).   DOI
31 Lee, K.H., Mizutani. N., 2006. Local Scour near a Vertical Submerged Breakwater and Development of Its Time Domain Analysis. Annual Journal of Coastal Engineering, 53, 501-505(in Japanese).   DOI
32 Lee, K.H., Mizutani, N., 2008. Experimental Study on Scour Occurring at a Vertical Impermeable Submerged Breakwater. Applied Ocean Research, 30, 92-99.   DOI
33 Lesser, G.R., Roelvink, J.A., van Kester, J.A.T.M., Stelling, G.S., 2004. Development and Validation of a Three-Dimensional Morphological Model. Coastal Engineering, 51, 883-915.   DOI
34 Lilly, D.K., 1992. A Proposed Modification of the Germano Subgrid-Scale Closure Method. Physics of Fluids, 4, 633-635.   DOI
35 Losada, I.J., Silva, R., Losada, M.A., 1997. Effects of Reflective Vertical Structures Permeability on Random Wave Kinematics. Journal of Waterway, Port, Coastal and Ocean Engineering, 123, 347-353.   DOI
36 Roulund, A., Sumer, B.M., Fredsoe, J., Michelsen, J., 2005. Numerical and Experimental Investigation of Flow and Scour around a Aircular Pile. Journal of Fluid Mechanics, 534, 351-401.   DOI