竖缝式鱼道180°转弯段的水力特性与改进研究

边永欢; 孙双科; 郑铁刚; 吕强

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工程科学与技术:2015,47(1):90-96

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竖缝式鱼道180°转弯段的水力特性与改进研究

边永欢, 孙双科, 郑铁刚, 吕强

(中国水利水电科学研究院流域水循环模拟与调控国家重点实验室)

Study on Hydraulic Characteristic and Improvement of Flow in 180° Turning Pools for Vertical Slot Fishways

Bian Yonghuan, Sun Shuangke, Zheng Tiegang, Lyu Qiang

(State Key Lab.of Simulation and Regulation of Water Cycle in River Basin,China Inst. of Water Resources and Hydropower Research)

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投稿时间：2014-07-07 修订日期：2014-09-28

中文摘要: 受布置型式与地形地质条件等因素的限制，大部分鱼道工程需要设计为折返型，而水流方向改变角度为180°的转弯段，是最能充分利用场地条件、节省空间的布置方式。目前，针对180°转弯段水力特性的研究成果鲜见报道，缺乏成熟完整的设计方法可资借鉴。采用数值模拟方法，对180°转弯段的水流流场进行了计算研究。结果表明，主流区水流紧贴边墙流动，并出现尺度过大的回流区。为改善上述不利流态，提出了增设整流导板的改进措施，并对水流流态改善前、后的水力特性进行了对比研究。研究表明:增设整流导板后，主流区基本位于转弯段的中间部分，主流衰减效果显著；弯段上游回流区的尺度大小、流速值与常规水池相当；弯段、弯段下游回流区的尺度减小，流速值明显减小。

中文关键词: 竖缝式鱼道 180°转弯段整流导板，主流回流

Abstract:The flow in 180° turning pools was studied by a numerical simulation method, and the results showed that the mainstream flowed close to sidewalls, and big size recirculation areas appeared on both sides of the mainstream. This poor flow pattern was adjusted by setting rectifier plates, and the hydraulic characteristics of flow structure were studied. The results showed that the mainstream zone was in the middle of the 180° turning pool, and the velocity attenuation was significant after adding rectifier plates. Recirculation zone sizes and velocity values in the upstream of turning part were similar to those of general pools. For reflux zones of the turning part and the downstream, their sizes were reduced, and velocities were weakened.

keywords: vertical slot fishway 180° turning pool rectifier plate mainstream recirculation

文章编号：201400736 中图分类号： 文献标志码：

基金项目:中国水利水电科学研究院博士生学位论文创新研究资助项目；中国水利水电科学研究院科研专项项目(SJ1235）；国家自然科学基金青年科学基金资助项目（51309256）

作者	单位
边永欢	中国水利水电科学研究院流域水循环模拟与调控国家重点实验室
孙双科	中国水利水电科学研究院流域水循环模拟与调控国家重点实验室
郑铁刚	中国水利水电科学研究院流域水循环模拟与调控国家重点实验室
吕强	中国水利水电科学研究院流域水循环模拟与调控国家重点实验室

Author Name	Affiliation
Bian Yonghuan	State Key Lab.of Simulation and Regulation of Water Cycle in River Basin,China Inst. of Water Resources and Hydropower Research
Sun Shuangke	State Key Lab.of Simulation and Regulation of Water Cycle in River Basin,China Inst. of Water Resources and Hydropower Research
Zheng Tiegang	State Key Lab.of Simulation and Regulation of Water Cycle in River Basin,China Inst. of Water Resources and Hydropower Research
Lyu Qiang	State Key Lab.of Simulation and Regulation of Water Cycle in River Basin,China Inst. of Water Resources and Hydropower Research

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引用文本：
边永欢,孙双科,郑铁刚,吕强.竖缝式鱼道180°转弯段的水力特性与改进研究[J].工程科学与技术,2015,47(1):90-96.
Bian Yonghuan,Sun Shuangke,Zheng Tiegang,Lyu Qiang.Study on Hydraulic Characteristic and Improvement of Flow in 180° Turning Pools for Vertical Slot Fishways[J].Advanced Engineering Sciences,2015,47(1):90-96.