| 旋流阻塞复合式泄洪洞的水力特性(2) |
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| 引用本文： | 牛争鸣,安丰勇,余挺,周永,付波.旋流阻塞复合式泄洪洞的水力特性(2)[J].长江科学院院报,2008,25(4):5-8. |
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| 作者姓名： | 牛争鸣 安丰勇 余挺 周永 付波 |
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| 作者单位： | 西安理工大学,西安,710048;中国水电顾问集团成都勘测设计研究院,成都,610072;二滩水电开发有限公司,成都,610061 |
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| 基金项目： | 国家自然科学基金-雅砻联合基金资助项目 |
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| 摘 要： | 通过模型试验对旋流阻塞复合式泄洪洞的压力、旋流角和空腔直径等水力特性进行了研究。设置阻塞后，起旋器与阻塞之间的水平洞段正压力明显增加与均化，沿程压力变化减小；由于离心力与旋流的作用，阻塞出口之后是完全掺混的水气两相流，阻塞后流速降低，空化的可能性减小，旋流洞段的范围极大地缩短；空腔直径减小，通风量需求减小。因此可利用水平旋流内消能泄洪洞的阻塞效应，进一步改善导流洞改建时的结构设计与防护措施。
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| 关 键 词： | 旋流阻塞复合式泄洪洞 模型试验 水力特性 阻塞效应 |
Hydraulic Characteristics of Swirl Tunnel with Barrage(2) |
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| NIU Zheng-ming,AN Feng-yong,YU Ting,ZHOU Yong,FU Bo.Hydraulic Characteristics of Swirl Tunnel with Barrage(2)[J].Journal of Yangtze River Scientific Research Institute,2008,25(4):5-8. |
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| Authors: | NIU Zheng-ming AN Feng-yong YU Ting ZHOU Yong FU Bo |
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| Affiliation: | NIU Zheng-ming1,AN Fengyong1,YU Ting3,ZHOU Yong2,FU Bo1(1.Xi\'an University of Technology,Xi\'an 710048,China,2.Ertan Hydropower Development Company,Ltd,Chengdu 610061,3.Institute of Survey , Design of Water Conservancy , Hydropower,Chengdu 610072,China) |
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| Abstract: | Through the model test,this paper investigates the hydraulic characteristics of the swirl tunnel containing a barrage,which include pressure,rotational flow angle,swirl cavity pocket diameter,and so on.After the barrage is installed,the positive pressure of the level section in the hole between the fastening device and the barrage is increased obviously,the change of pressure along length is reduced;with the action of centrifugal force,there exists two-phase flow which is mixed enough by air and water behin... |
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| Keywords: | swirl tunnel with barrage model test hydraulic characteristic barrage effect |
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