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http://dx.doi.org/10.9765/KSCOE.2020.32.6.420

Characteristics of Wave on Circular Breakwater of Double Array by Various Porous Coefficients among Circular Caissons  

Park, Min Su (Department of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.32, no.6, 2020 , pp. 420-433 More about this Journal
Abstract
In order to increase the stability of existing breakwater, new caissons are installed on the back or the front of existing caissons. It is very important to evaluate wave force and wave run-up according to the change of porosity among caissons and the energy loss due to separation effects. In this study, we use the eigenfunction expansion method with Darcy's law, which describes the flow of a fluid through a porous plate, to analyze the characteristics of wave on circular breakwater of double array for various porous coefficients. To verify the numerical method, the comparison between present results and Sankarbabu et al. (2008) is made. The wave force and the wave run-up acting on each dual cylindrical caisson are calculated for various parameters by considering the energy loss and the change of porosity.
Keywords
eigenfunction expansion method; porous coefficient; dual cylindrical caisson; wave force; wave run-up;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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1 Cho, I.H. (2002). Wave absorbing characteristics of a horizontal submerged punching plate. Journal of Korean Society of Coastal and Ocean Engineers, 14(4), 265-273 (in Korean).
2 Cho, I.H. (2003). Wave control by an array of n bottom mounted porous cylinders. Journal of Korean Society of Coastal and Ocean Engineers, 15(4), 232-241 (in Korean).
3 Cho, I.H. (2004). Wave control by an array of porous dual cylindrical structures. Journal of Ocean Engineering and Technology, 18(5), 7-14 (in Korean).
4 Isaacson, M., Premasiri, S. and Yang, G. (1998). Wave interactions with vertical slotted barrier. Journal of Waterway, Port, Coastal and Ocean Engineering, 124, 118-126.   DOI
5 Kim, M.H. (1993). Interaction of waves with N vertical circular cylinders. Journal of Waterway Port Coastal and Ocean Engineering, 119, 671-689.   DOI
6 Linton, C.M. and Evans, D.V. (1990). The interaction of waves with arrays of vertical circular cylinder. Journal of Fluid Mechanics, 215, 549-569.   DOI
7 Maniar, H.D. and Newman, J.N. (1997). Wave diffraction by a long array of cylinders. Journal of Fluid Mechanics, 339, 309-330.   DOI
8 Park, M.S. (2020). Wave structure interaction by installation of new circular caissons on old circular caisson breakwater. Journal of Korean Society of Coastal and Ocean Engineers, 32(5), 307-321 (in Korean).   DOI
9 Sankarbabu, K., Sannasiraj, S.A. and Sundar, V. (2007). Interaction of regular waves with a group of dual porous circular cylinders. Applied Ocean Research, 29, 180-190.   DOI
10 Park, M.S., Koo, W.C. and Choi, Y.R. (2010). Hydrodynamic interaction with an array of porous circular cylinders. International Journal of Naval Architecture and Ocean Engineering, 2, 146-154.   DOI
11 Sankarbabu, K., Sannasiraj, S.A. and Sundar, V. (2008). Hydrodynamic performance of a dual cylindrical caisson breakwater. Coastal Engineering, 55, 431-446.   DOI
12 Vijayalakshmi, K. (2005). Hydrodynamics of a Perforated Circular Caisson Encircling a Vertical Cylinder. Ph.D Thesis, Indian Institute of Technology Madras, India.
13 Wang, K.H. and Ren, X. (1994). Wave interaction with a concentric porous cylinder system. Ocean Engineering, 21(4), 343-360.   DOI
14 Williams, A.N. and Li, W. (2000). Water wave interaction with an array of bottom-mounted surface-piercing porous cylinders. Ocean Engineering, 27, 840-866.
15 Yu, X. (1995). Diffraction of water waves by porous breakwaters. Journal of Waterway, Port, Coastal and Ocean Engineering, 121, 275-282.   DOI