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상하가 원형 파이프로 구성된 부침식 가두리의 동적 거동 해석

Dynamic behavior of a submersible fish cage rigged with a circular floating and a sinking collar

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참고문헌

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초록

In this research, the submersible fish cage was designed to avoid structural and biological damage during harsh sea conditions. The submersible cage system consists of netting, mooring ropes, a floating collar, floats, sinkers and anchors. Whole elements of the cage were modeled on the mass-spring model. The computer simulations were carried out to investigate the dynamic behavior of the cage and to calculate mooring line tension subjected to tidal currents and waves. As expected, the tension values in the mooring line of the submerne oposition are 36% less compared to that of the surface cage under the same loading conditions. As the wave was used in combination f thethe current velocity of 1m/s, the average tensile load for the submerne ocage showe o85% of the value for the floating cage. The simulation results provide an improved understanding of the behaviors of the structure and valuable information on the optimized design of the cage system exposed to open ocean environmental factors.

Abstract

In this research, the submersible fish cage was designed to avoid structural and biological damage during harsh sea conditions. The submersible cage system consists of netting, mooring ropes, a floating collar, floats, sinkers and anchors. Whole elements of the cage were modeled on the mass-spring model. The computer simulations were carried out to investigate the dynamic behavior of the cage and to calculate mooring line tension subjected to tidal currents and waves. As expected, the tension values in the mooring line of the submerne oposition are 36% less compared to that of the surface cage under the same loading conditions. As the wave was used in combination f thethe current velocity of 1m/s, the average tensile load for the submerne ocage showe o85% of the value for the floating cage. The simulation results provide an improved understanding of the behaviors of the structure and valuable information on the optimized design of the cage system exposed to open ocean environmental factors.

참고문헌 (19)

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  8. 김태호, "유한 요소법을 이용한 어업용 프레임 구조물의 변형 및 강도 해석", 한국어업기술학회지, 38(4), pp.307~316 (2002), 한국어업기술학회
  9. 김태호, "압축공기를 이용한 부침식 가두리 시설의 부침 특성에 대한 수치해석", 한국어업기술학회지, 43(1), pp.38~48 (2007), 한국어업기술학회
  10. Kim, T.H., "Design of fish cage structures", pp.40~183 (2009), Chonnam Univ. Press
  11. Lader, P.F., "Dynamic properties of a flexible net sheet in waves and current-a numerical approach", Aquacultural Engineering, 35, pp.228~238 (2006)
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  13. Lee, C.W., "Physical modeling for underwater flexible systems dynamic simulation", Ocean Engineering, 32, pp.331~347 (2005)
  14. Lee, C.W., "Dynamic simulation of a fish cage system subjected to currents and waves", Ocean Engineering, 35, pp.1521~1532 (2008)
  15. Li, Y.C., "Numerical simulation of the hydrodynamic behaviour of submerged plane nets in current", Ocean Engineering, 33, pp.2352~2368 (2006)
  16. Thomassen, P., "Methods for Dynamic Response Analysis and Fatigue Life Estimation of Floating Fish Cages", 박사, pp.2008
  17. Tsukrov, I., "Finite element modeling of net panels using a consistent net element", Ocean Engineering, 30, pp.251~270 (2003)
  18. Tsukrov, I., "Numerical modeling of nonlinear elastic components of mooring system", IEEE Journal of Oceanic Eng, 30(1), pp.37~46 (2005)
  19. Zhao, Y.P., "Numerical simulation of the effects of structure size ratio and mesh type on threedimensional deformation of the fishing-net gravity cage in current", Aquacultural Engineering, 36, pp.285~301 (2007)

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