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수치해석을 이용한 근해안강망 어구 모델링과 거동분석 KCI 등재

Offshore stow net modeling and analysis of behavior using numerical methods

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수산해양기술연구 (Journal of the Korean Society of Fisheries and Ocean Technology)
한국수산해양기술학회(구 한국어업기술학회) (The Korean Society of Fisheriers and Ocean Technology)
초록

The Korean stow net is a fishing method that utilizes the changing direction of the net entrance with the tidal current. This study attempted to obtain basic data from the recent offshore stow net fisheries to improve the gear by analyzing the dynamic behavior of the nets affected by current speed and direction using computer simulations. A numerical calculation was performed at a current speed of 0.5 knot between 2.5 knot at each 0.5 knot. The time taken for the gear opening was the longest from 0.5 knot at 1,500 seconds and the shortest from 2.5 knot at 450 seconds in the simulations. In all cases, the net width and tension at net deployment gradually decreased as the current speed decreased. However, the net height tended to increase inversely proportional to the current speed. During the net rotation, the net height was maintained at all cases. The net width and tension fluctuated, but the regularity was very low. In this study, the calculated simulation data showed that the opening efficiency decreased proportional to the current speed. The opening efficiency is related to the catching efficiency; therefore, it is necessary to improve the gear to enhance its opening efficiency.

목차
서 론
재료 및 방법
    근해안강망 어구의 구성
    근해안강망 어구 수치 모델링
    근해안강망 어구 시뮬레이션
결과 및 고찰
    근해안강망 어구의 수중 전개
    근해안강망 어구의 수중 회전
    수치계산과 조업에 대한 고려
결 론
References
저자
  • 장용석(국립수산과학원 수산공학과) | Yong-Suk JANG (Fisheries Engineering Research Division, National Institute of Fisheries Science)
  • 이춘우(부경대학교 해양생산시스템관리학부) | Chun-Woo LEE (Department of Marine Production System Management, Pukyong National University) Corresponding author
  • 최규석(부경대학교 수산물리학과) | Kyu-Suk CHOI (Department of Fisheries Physics & system, Pukyong National University)