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

상하가 원형 파이프로 구성된 부침식 가두리의 동적 거동 해석

  • Lee, Chun-Woo (Division of Marine Production System Management, Pukyong National University) ;
  • Lee, Ji-Hoon (Institute of Low-Carbon Marine Production Technology, Pukyong National University) ;
  • Choe, Moo-Youl (Department of Fisheries Physics, Pukyong National University) ;
  • Lee, Gun-Ho (Fisheries Engineering Division, National Fisheries Research and Development Institute)
  • 이춘우 (부경대학교 해양생산시스템관리학부) ;
  • 이지훈 (부경대학교 저탄소해양생산기술연구소) ;
  • 최무열 (부경대학교 수산물리학과) ;
  • 이건호 (국립수산과학원 수산공학과)
  • Published : 2010.02.28

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 submerged position are 36% less compared to that of the surface cage under the same loading conditions. As the wave was used in combination with the current velocity of 1m/s, the average tensile load for the submerged cage showed 85% 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.

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  1. Analysis on underwater stability of the octagonal pillar type fish cage and mooring system vol.50, pp.2, 2014, https://doi.org/10.3796/KSFT.2014.50.2.193