| 陈文河1,2 宋利明1,3,4.渔具的沉降性能及数值模拟研究进展[J].广东农业科学,2014,41(1):115-120 |
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渔具的沉降性能及数值模拟研究进展 |
| A review on the sinking performance andnumerical simulation of fishing gear |
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| DOI： |
| 中文关键词: 灯光罩网 沉降性能 渔具 数值模拟 |
| 英文关键词: light falling-net,sinking performance,fishing gear,numerical simulation |
| 基金项目:广东省教育部产学研结合项目（2012B091100373）
广东省海洋渔业科技推广专项科技攻关与研发项目A201108H
01国家高技术研究发展计划项目(2012AA092302)上海市教
育委员会科研创新项目(12ZZ168)高等学校博士学科点专项科
研基金联合(20113104110004) |
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| 摘要点击次数: 1667 |
| 全文下载次数: 902 |
| 中文摘要: |
| 灯光罩网是近年在南海迅速发展的一种新型渔具，沉降性能及网具作业时所具有的形状是影响灯光罩
网渔获效率的重要因素，总结了下纲载荷网衣材料缩结系数及海流各因素对渔具沉降性能的影响，目脚水动力特
性与水动力系数研究和网渔具运动数学模型的建立方法分析了延绳钓网片及围网近年在数值模拟方面的研究方
法与成果针对灯光罩网特点提出利用弗里德曼CN90 公式和松田皎建立的C0公式，以及田内公式中任意冲角平面网
片阻力系数，借助曲面积分的方法建立灯光罩网阻力计算公式。数值模拟中为了获得更大的求解时间步长建议尝试
网格矩阵及分散算法进行各质量点模型求解。 |
| 英文摘要: |
| A new type of fishing gear, the light falling-net, has rapid development in the South China Sea in recent
years. Sinking performances and shape of the nets in working are the important factors influencing fishing efficiency. This
paper summarized factors affecting the sinking performances of fishing gear, including leadline load, net material, hanging
ratio and ocean current, etc. Moreover, the studies on hydrodynamic coefficient and characteristics of mesh bar, and the
methods for establishing dynamic mathematical model of fishing gear have become another focus in this paper. By analyzing
the methods and results of longline, netting and purse seine concerning numerical simulation, a resistance formula featuring
light falling-net could be built, taking advantage of CN90 formula by Friedman and C0 formula by Matuda and plane netting
resistance coefficient of arbitrary attack angle by Tauti. It was suggested that the matrixing network and distributed
computing could be used to solve the formula of different mass points in order to obtain a stable calculation time-step in
numerical simulation. |
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