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Wave Interaction with a Porous Circular Cylinder of Non-Uniform Porosity  

Cho, Il-Hyoung (Department of Ocean System Engineering, Jeju National University)
Publication Information
Journal of Ocean Engineering and Technology / v.23, no.6, 2009 , pp. 23-31 More about this Journal
Abstract
The interaction of incident monochromatic waves with a bottom-mounted vertical porous circular cylinder is investigated using the framework of the three-dimensional linear potential theory. The porosity of the circular cylinder is uniform vertically but varies in the circumferential direction. By adjusting the porosities of the circular cylinder, both the wave blocking performance of a porous semi-circular breakwater and the wave responses inside a circular harbor with an entrance are applied as calculation examples. It is found that the reflected waves, wave run-up, and wave forces are significantly reduced due to wall porosity, which are positive factors for a breakwater, and the amplification factor of a circular harbor at resonant frequencies is greatly reduced by a porous sidewall.
Keywords
Porous circular cylinder; Wave deformation; Breakwater; Eigenfunction expansion method; Wave force;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 Isaacson, M., Premasiri, S. and Yang, G. (1998). "Wave Interactions with Vertical Slotted Barrier", J. Waterway, Port, Coastal and Ocean Engrg., Vol 124, pp 118-126   DOI   ScienceOn
2 Jarlan, G.E. (1961). "A Perforated Vertical Wall Breakwater", Dock Harbour Auth. XII, Vol 486, pp 394-398
3 Yu, X. and Chwang, A.T. (1994). "Wave-induced Oscillation in Harbor with Porous Breakwaters", J. Waterway, Port, Coastal and Ocean Engrg., Vol 120, pp 125-144   DOI   ScienceOn
4 MacCamy, R.C. and Fuchs, R.A. (1954). "Wave Forces on Piles: A Diffraction Theory", Tech. Memo No.69, U.S. Army Corps of Engineers, Beach Erosion Board
5 조일형 (2004). "투과성 이중 원통구조물 배열에 의한 파랑제어", 한국해양공학회지, 제18권, 제5호, pp 7-14
6 Dalymple, R.A., Losada, M.A. and Martin P.A. (1991). "Reflection and Transmission from Porous Structure Inder Oblique Wave Attack", J. Fluid Mech., Vol 224, pp 625-644   DOI
7 Sankarbaru, K., Sannasiraj, S.A. and Sundar, V.(2008). "Hydrodynamic Performance of a Dual Cylindrical Caisson Breakwater", Ocean Engineering, Vol 55, pp 431-446   DOI   ScienceOn
8 Williams, A.N. and Li, W. (2000). "Water Wave Interaction with an Array of Bottom-mounted Surface-piercing Porous Cylinders", Ocean Engineering, Vol 27, pp 841-866   DOI   ScienceOn
9 조일형 (2003). "N개의 투과성 원기둥 배열에 의한 파랑제어" 한국해안.해양공학회지, 제15권, 제4호, pp 232-241
10 Cho, I.H. and Kim, M.H. (2008). "Wave Absorbing System Using Inclined Perforated Plates", J. Fluid Mech., Vol 608, pp 1-20   DOI   ScienceOn