Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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Estimation of vertical and horizontal spreading force of the towing cage for transporting the live fish by model test and simulation

모형실험과 시뮬레이션을 통한 활어 이송용 예인 가두리의 수직 및 수평 전개력 추정

  • Park, Subong (Department of Fisheries Physics, Pukyong National University) ;
  • Lee, Chun Woo (Division of Marine Production System Management, Pukyong National University)
  • 박수봉 (부경대학교 수산물리학과) ;
  • 이춘우 (부경대학교 해양생산시스템관리학부)
  • Received : 2014.04.07
  • Accepted : 2014.05.22
  • Published : 2014.05.31
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Abstract

Nowadays, consumption of fisheries products is increasing. There are several factors, one of which is a quantitative development through aquaculture. Another factor is an increase qualitative consumption of fish which require that fish be supplied alive. This requires a lot of technical effort to transport the live fish that have low survival rate (c.f. tuna and mackerel) in coastal waters and in the open sea. To develop a towing cage for transporting the live fish, model test in a circulate water channel and simulation by computer tool were carried out. In order to spread vertically, floats were attached at the upper part of the cage, and iron chains attached at the lower part of the cage. For horizontal spreading, kites were attached on the cage. The tension and spreading performance of the cage were measured. The result shows that the tension and reduction ratio of inside volume of the cage were tended to increase with increased towing speeds. The suitable operation condition in towing cage was 1.0 m/s towing speeds with vertical spreading force 8.7 kN, horizontal spreading force 5.6 kN; in this case the reduction ratio of inside volume of the cage was estimated as 25%.

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References

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