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

  • 제48권1호
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  • Pages.1-9
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  • 2012
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  • 2671-9940(pISSN)
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  • 2671-9924(eISSN)
한국수산해양기술학회 (The Korean Society of Fisheries and Ocean Technology)
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자원관리형 반구형 새우통발의 형상 변화에 따른 유체저항 특성과 수중안정성

On the hydrodynamic resistance and stabilization of the coonstripe shrimp pot to reduce catch of a small size shrimp

  • 김성훈 (국립수산과학원 시스템공학과) ;
  • 이경훈 (국립수산과학원 시스템공학과) ;
  • 김형석 (부경대학교 해양생산시스템관리학부)
  • 투고 : 2012.01.14
  • 심사 : 2012.01.20
  • 발행 : 2012.02.28
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초록

For the optimal design of a shrimp pot to control the catch size and to reduce catch the small size shrimp, tank experiments were carried out to study the pot stability under water. Tank experiments were carried out to measure the drag with 4 kinds of model pots that have 50% selection on the individual of 25mm carapace length. The drag of each pot was measured every 10 times with changing the current speeds from 0.1m/s to 0.7m/s in 0.1m/s intervals and the pot attack angle from $0^{\circ}$ to $90^{\circ}$ in $15^{\circ}$ interval in a flume tank. The relation between the current speed and drag was presented. The stability of pot was estimated using the drag data and the friction data of Kim et al. (2008b). The results showed that, the drag was shown lower as small as the projected area of pot depending on the current speeds and angles. The model pots were showed to slide on the seabed in case of rock at the current speeds 0.35-0.38m/s and the possibility of turn over at the current speeds 0.77-0.89m/s. In conclusion, the stability of a shrimp pot showed more stable as the pot of the lower the height and the smaller projected area on current.

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참고문헌

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