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

  • 제38권2호
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  • Pages.172-178
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  • 2002
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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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유체역학적 해석을 위한 선망 어구 운동의 동적 시뮬레이션

Dynamic simulation of a Purse seine net behavior for hydrodynamic analysis

  • 발행 : 2002.05.01
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초록

본 연구는 유체역학적 해석을 이용하여 선망 어구 운동을 동적으로 시뮬레이션하였다. 선망 어구는 조업 과정 중에 어구의 형상이 크게 바뀌는 특성이 있고, 모든 조업단계에서 어구요소가 3차 시스템이며 대부분 망지라는 유연한 물체에 의해 구성되어 있어 외력에 대해 그 형상이 비선형적으로 변하므로 모델링이 어렵다. 본 연구에서는 질량-스프링 모델을 이용하여 수학적으로 기술하였다. 선망의 조업 과정중 그물의 투망, 침강, 죔줄을 죄는 과정의 어구운동을 시뮬레이션하였다.

This study presents a dynamic simulation of a purse seine net behavior Mathematical model suitable for purse seining, which is based on data from a series of previous simulations, various field experiments, is modelized as a set of mass-spring system. In this model, a number of meshes are approximated as one mass point, each of which connected to its neighbors by massless springs, the equations of motion are derived from considering internal force from the springs and external forces such as resistance and gravitation. This simulation shows the quantitative state on every mass point of the net and purse line during the shooting and pursing phases. So it is possible that performance of a purse seine net be analyzed using various and evolving parameters such as the shooting speed, the hauling speed, the size or type of the sinker, float and twine, also the hanging ratio etc.

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참고문헌

  1. Misund, O. A. Dickson, W. and Beltestad, A. K.(1992): Optimization of purse seines by large-meshed sections and low lead weight. Theoretical considerations, sinking speed measuremetns and fishing trials, Fisheries Research, 14, 305-317. https://doi.org/10.1016/0165-7836(92)90039-V
  2. 김석종.今井健彦.박정식 (1995) : 건착망의 운동특성(I), 한국어업기술학회지, 31(4), 372-378.
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  4. 김석종.박정식(1998) : 선망의 침강 저항 해석 - d/l 이 다른 모형망의 경우, 한국어업기술학회지, 34(3), 274-282.
  5. Kim, Y. H.(2000): Geometry of the Model Purse Seine in Relation to Enclosed Volume during Hauling Operation, J. Fish. Sci. 3(2), 156-162.
  6. Provot, X.(1995) : Deformation Constraints in a Mass-Spring Model to Describe Rigid Cloth Behavior, Graphics Interface '95, 147-154.
  7. Konagaya, T.(197l) : Studies on the Design of the Purse seine, Journal of Faculty of Fisheries, Prefectural University of Mie, 8(3), 209-293.
  8. 金碩鍾.今井健彦.菊用浩行 (1991) : 重みづけの異なる網地の沈降特性の解析, 日本水産學會誌, 58(6), 1037-1042.
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피인용 문헌

  1. Maneuvering character of hull form renovated tuna purse seiner vol.51, pp.1, 2015, https://doi.org/10.3796/KSFT.2015.51.1.061
  2. Dynamic simulation of tuna longline gear using numerical methods vol.71, pp.6, 2005, https://doi.org/10.1111/j.1444-2906.2005.01095.x
  3. The simulation of the geometry of a tuna purse seine under current and drift of purse seiner vol.36, pp.14, 2009, https://doi.org/10.1016/j.oceaneng.2009.06.011
  4. A method for improving the dynamic simulation efficiency of underwater flexible structures by implementing non-active points in modelling vol.65, pp.9, 2008, https://doi.org/10.1093/icesjms/fsn126
  5. Fishing performance of hull form renovated tuna purse seiner vol.51, pp.3, 2015, https://doi.org/10.3796/KSFT.2015.51.3.321