| 吸、喷水法减小丁坝下游回流尺度的试验研究 |
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| 引用本文： | 马永军,陈稚聪,丁翔.吸、喷水法减小丁坝下游回流尺度的试验研究[J].水科学进展,2003,14(6):763-768. |
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| 作者姓名： | 马永军 陈稚聪 丁翔 |
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| 作者单位： | 清华大学水利水电工程系, 北京, 100084 |
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| 基金项目： | 中国三峡总公司基础性研究基金资助项目(95 3 2) |
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| 摘 要： | 由于流动边界出现凸出障碍物引起边界层分离,导致回流发展、水流流态恶化等一系列问题,在水利、航道及电站等工程中是一种普遍存在的现象。从控制边界层的思路出发,采用"吸、喷"水方案,即在凸出障碍物与水流平行的边界略上部位将一部分边界层水流吸走,并在其下游喷出增加边界层的动量,可以减小障碍物下游的回流尺度。在50cm宽水槽中进行的试验表明,采用这种方法是非常有效的。
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| 关 键 词： | 边界层 回流长度 吸、喷流量 丁坝 试验研究 |
| 文章编号： | 1001-6791(2003)06-763-06 |
| 收稿时间： | 2002-08-29 |
| 修稿时间： | 2002年8月29日 |
Experimental study on reducing the size of circulating region in the downstream of spur dikes |
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| MA Yong-jun,CHEN Zhi-cong,DING Xiang.Experimental study on reducing the size of circulating region in the downstream of spur dikes[J].Advances in Water Science,2003,14(6):763-768. |
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| Authors: | MA Yong-jun CHEN Zhi-cong DING Xiang |
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| Affiliation: | Department of Hydraulic and Hydropower Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | Boundary layer is separated due to the barrier along the flow border line, thus the circulating flow is strengthened and the flow pattern is deteriorated.It is a common phenomenon in the project of water conservancy, searoute and power station.From the theory of boundary layer control, the size of circulating region in the dwvrr strewn of the barrier can be reduced by using the method of "sucking-spouting" water, which sucks part of the discharge in the upstream of the convex barrier and spouts it in the downstremn of it.The results of tests in the 50 cm width flume show that the method of "sucking-spouting", water is very effectme. |
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| Keywords: | boundary layer length of circulating region sucking-spouting discharge spur dike experiment study |
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