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| 三种叠放形式的圆管型人工鱼礁流场效应数值模拟与PIV试验研究 |
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郑延璇,梁振林,关长涛,宋协法,李强
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中国海洋大学,山东大学威海分校,中国水产科学研究院黄海水产研究所,中国海洋大学,乳山市海洋与渔业局
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| 摘要: |
| 人工鱼礁单体按不同的数量和排列方式组合投放会产生不同的流场效应。圆管型礁为目前黄渤海区增殖礁的重要礁体型式，为优化该礁体的投放数量与排列方式，选择了3种不同叠放个数（1个、3个和6个）的圆管礁，设定了5个流速梯度（4.5cm/s、9.0cm/s、13.5cm/s、18.0cm/s和22.5cm/s），利用PIV粒子图像测速技术和Fluent数值模拟软件对圆管型人工鱼礁的流场进行水槽模型试验和数值模拟。结果表明，数值模拟结果与水槽试验结果基本吻合，误差在20%以下，表明数值模拟能够反映人工鱼礁的流场效应；当礁体叠放个数一定时，最大上升流流速、上升流高度和上升流面积均随来流速度的增加而增大，背涡流面积呈现不规则的变化；当来流速度一定时，最大上升流流速、上升流面积、上升流高度和背涡流面积均随礁体叠放个数的增加而增大。 |
| 关键词: 人工鱼礁 流场效应 数值模拟 PIV试验 |
| DOI：10.11693/hyhz20121108001 |
| 分类号: |
| 基金项目:公益性行业(农业)科研专项（201003068）；中央级公益性科研院所基本科研业务费专项资金项目（2010-chb-01，20603022011006） |
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| Numerical simulation and PIV experimental study of the effect of flow field around tube artificial reefs with three stacked layouts |
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zhengyanxuan,liangzhenlin,guanchangtao,songxiefa and liqiang
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Ocean University of China,Shan Dong University at Weihai,Yellow Sea Fisheries Research Institute,Ocean University of China,Rushan City Ocean and Fishery Administration
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| Abstract: |
| The artificial reefs placed on the seabed with different number and layouts, would produce different flow field. Tube artificial reefs are widely used in Yellow sea and Bohai sea. In order to optimize the layout number and arrangement, the PIV technology and Fluent numerical simulation were used to analysis the flow fields around reef models with different number(one, three, six) at five velocities(4.5cm/s, 9.0cm/s, 13.5cm/s, 18.0cm/s and 22.5cm/s). The numerical simulation results are consist with the experimental result and the? corresponding errors are less than 20%, the method of simulation can reflect the effect of flow field. The max upwelling velocity, the height of upwelling and the area of upwelling increase with the increment of the velocities while the area of vortices vary irregularly. The max upwelling velocity, the height of upwelling and the area of upwelling and the area of vortices are increase with the increment of the number of reefs piled up together. |
| Key words: artificial reefs effect of flow field numerical simulation PIV experiment |