圆形曲面网板水动力学性能研究
Study on the Hydrodynamic Performance of Circular Cambered Otter Board
DOI: 10.12677/OJFR.2021.83015, PDF,  被引量    国家科技经费支持
作者: 冯春雷, 王永进, 王 磊：中国水产科学研究院东海水产研究所，农业农村部远洋与极地渔业创新重点实验室，上海；许庆昌*, 李显森：中国水产科学研究院黄海水产研究所，山东 青岛；黄六一, 徐基强：中国海洋大学水产学院，山东 青岛
关键词: 圆形曲面网板；水槽模型试验；数值模拟；水动力性能；Circular Cambered Otter Board； Flume Tank Experiment； Numerical Simulation； Hydrodynamic Performance
摘要: 拖网是现代渔业主要作业方式之一，其中单船拖网是拖网渔业中最常见的作业方式。网板是单船拖网系统的重要属具，主要为拖网作业提供水平扩张力。本文通过水槽模型试验和数值模拟研究圆形曲面网板的水动力性能。通过数据处理，获得该网板的升阻力系数、升阻比以及压力中心系数等水动力参数，并根据数值模拟结果分析网板周围的流场流态。结果显示，该网板既有较大的升力系数，又有较高的升阻比，且该网板的曲面外形及导流板结构可有效延缓流的分离，从而增大网板的临界冲角；数值模拟结果与模型试验结果比较近似，对网板最大升力系数及最大升阻比的模拟误差均低于10%，且数值模拟可以有效预测网板的临界冲角。本文建议在条件允许的情况下，利用水槽试验与数值模拟方法开展网板水动力学性能研究。
Abstract: Trawling is one of the main methods of modern fisheries, of which the single trawling is the common operation types. Otter board is the vital components of a single trawler system; it can provide the desired horizontal opening of a trawl net. In the present study, the hydrodynamic of a circular cambered otter board was studied using flume tank experiment and numerical simulation. The lift/drag coefficient, lift-to-drag ratio and center-of-pressure coefficient were obtained during the data processing, and the flow distribution around the otter board was analyzed according to the numerical results. It showed that the otter board had a good hydrodynamic performance for its high lift coefficient and lift-to-drag ratio, and the camber/deflector structure can delay the flow separation. Numerical simulation results showed a good agreement with experiment ones and could predict the critical angle of attack. Simulation errors the maximum lift coefficient and lift-to-drag ratio were under 10%. Given the otter boards are operated in water, it was suggested to apply both flume tank experiment and numerical simulation to study the hydrodynamic performance of otter board.
文章引用：冯春雷, 许庆昌, 黄六一, 徐基强, 李显森, 王永进, 王磊. 圆形曲面网板水动力学性能研究[J]. 水产研究, 2021, 8(3): 127-135. https://doi.org/10.12677/OJFR.2021.83015

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