| 边永欢,孙双科.竖缝式鱼道的水力特性研究[J].水利学报,2013,44(12): |
| 竖缝式鱼道的水力特性研究 |
| Study on Hydraulic Characteristic of Flow in the Vertical Slot Fishway |
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| DOI： |
| 中文关键词: 竖缝式鱼道 数值模拟 流速 主流区 |
| 英文关键词: vertical slot fishway numerical simulation velocity mainstream zone |
| 基金项目: |
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| 中文摘要: |
| 竖缝式鱼道因其过鱼效率高、对水位变化的适应能力强等技术优势而在国内外得到了广泛的工程应用。采用数值模拟计算方法，对竖缝断面平均流速分别为0.8、1.0、1.2、1.5、1.8、2.0m/s条件下竖缝式鱼道的水流结构进行了计算研究。研究结果表明，在0.8~2.0m/s范围内，竖缝断面平均流速值的大小对于各级水池内主流区分布、主流流速的沿程衰减规律以及竖缝断面流速分布并无显著影响，表明作者早先研究取得的研究成果具有较好的普适性。在此基础上，进一步研究了竖缝断面流速分布与各级水池内主流流速分布的变化规律。 |
| 英文摘要: |
| Vertical slot fishways are widely used over the world because of their high efficiency of fish passing and adapting to the change of water level. In the earlier studies on flow in the vertical slot fishway， the author obtained logical geometric scale of the vertical slot fishway，which included ratio of length to width of pools， central baffle length， vertical slot width， etc. However，the logical geometric scale was obtained at the condition of the average velocity of only 1.0m/s in vertical slot section. For different flow velocities，whether the geometric scale is suitable or not is still a question for further research. In this paper， the flow in vertical slot fishways is studied when the value of velocity in vertical slot section is 0.8， 1.0， 1.2， 1.5， 1.8， 2.0m/s separately by a numerical simulation method. The results show that in the range of 0.8~2.0m/s， the value of velocity in vertical slot section has no significant influence on the distribution of mainstream zone， the attenuation of velocity along mainstream， the velocity distribution of vertical section， etc. So that geometric scale is general to a certain extent. In addition， the velocity distribution of vertical slot section and mainstream in all pools are studied. |
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