Design of trawl otter boards using computational fluid dynamics
Design of trawl otter boards using computational fluid dynamics
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DOI：
10.1016/j.fishres.2014.08.011
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发表时间：
2015
影响因子：
2.4
通讯作者：
Yuki Takahashi;Y. Fujimori;F. Hu;X. Shen;N. Kimura
中科院分区：
文献类型：
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作者：
Yuki Takahashi;Y. Fujimori;F. Hu;X. Shen;N. Kimura
为验证计算流体动力学分析在网板设计中的应用，对一个双平面型网板模型进行了计算流体动力学（CFD）分析。在基本模态（展弦比3.0、外倾比15%、间隙弦比0.91、安装角30°）下，计算流体动力学分析结果表明，攻角为17.5°时，升力系数最大值为1.65，这与相同条件下水槽试验结果（α= 20°时，CLmax= 1.64）一致。此外，流线和分离区周围的水獭板进行了可视化，并从过去的坦克实验研究的结果进行了比较。CFD分析结果显示了与实验结果相似的模式，并且确认了具有尾涡的流动的细节。我们的结论是，CFD分析是有用的设计和开发的水獭板。
Computational fluid dynamics (CFD) analysis was conducted for a biplane-type otter board model to validate the use of CFD analysis in designing otter boards. In the base mode (aspect ratio 3.0, camber ratio 15%, gap-chord ratio 0.91, and stagger angle 30°), CFD analysis results show a maximum lift coefficient value of 1.65 for angle of attack 17.5°, which is in agreement with results of the flume tank experiment (CLmax= 1.64 whenα= 20°) under the same conditions. In addition, the streamline and separation zones around the otter board were visualized and compared to the results from past tank experiment studies. CFD analysis results showed patterns similar to the experimental results, and the details of flow with a trailing vortex were confirmed. We concluded that CFD analysis is useful in the designing and development of otter boards.