한국해양공학회지 (Journal of Ocean Engineering and Technology)

  • 제23권6호
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  • Pages.23-31
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  • 2009
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  • 1225-0767(pISSN)
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  • 2287-6715(eISSN)
한국해양공학회 (Korean Society of Ocean Engineers)
권호 표지

비 균일한 공극율을 갖는 투과성 원기둥과 파의 상호작용

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

  • 조일형 (제주대학교 해양시스템공학과)
  • Cho, Il-Hyoung (Department of Ocean System Engineering, Jeju National University)
  • 발행 : 2009.12.31
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초록

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.

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참고문헌

  1. 조일형 (2003). "N개의 투과성 원기둥 배열에 의한 파랑제어" 한국해안.해양공학회지, 제15권, 제4호, pp 232-241
  2. 조일형 (2004). "투과성 이중 원통구조물 배열에 의한 파랑제어", 한국해양공학회지, 제18권, 제5호, pp 7-14
  3. Cho, I.H. and Kim, M.H. (2008). "Wave Absorbing System Using Inclined Perforated Plates", J. Fluid Mech., Vol 608, pp 1-20 https://doi.org/10.1017/S0022112008001845
  4. 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 https://doi.org/10.1017/S0022112091001908
  5. 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 https://doi.org/10.1061/(ASCE)0733-950X(1998)124:3(118)
  6. Jarlan, G.E. (1961). "A Perforated Vertical Wall Breakwater", Dock Harbour Auth. XII, Vol 486, pp 394-398
  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 https://doi.org/10.1016/j.coastaleng.2007.12.007
  8. 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
  9. 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 https://doi.org/10.1061/(ASCE)0733-950X(1994)120:2(125)
  10. 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 https://doi.org/10.1016/S0029-8018(99)00004-9