| 水槽中振动格栅紊流特性实验研究 |
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| 引用本文： | 王得祥,王得军,李艳.水槽中振动格栅紊流特性实验研究[J].华北水利水电学院学报,2007,28(2):19-21. |
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| 作者姓名： | 王得祥 王得军 李艳 |
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| 作者单位： | 1. 河海大学水利水电工程学院,江苏,南京,210098
2. 天津市水文水资源勘测管理中心,天津,300061 |
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| 摘 要： | 振动格栅是一种研究紊流特性的有效实验手段.以往研究大都在水箱中对振动格栅紊流特性进行实验研究,为能模拟天然河道中的紊流,研究天然河道中紊流特性,利用ADV技术在水槽中对振动格栅紊流进行了实验研究.研究结果表明:均方根速度与格栅振动频率成线性关系;均方根速度与距格栅中平面的距离成幂指数关系衰减;几何系数与水的自由运动空间成正比关系.
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| 关 键 词： | 格栅紊流 水槽 频率 衰减 几何系数 |
| 文章编号： | 1002-5634（2007）02-0019-03 |
| 修稿时间： | 2006-11-12 |
Experimental Study on Characteristics of Oscillating-grid Turbulence in Flume |
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| WANG De-xiang,WANG De-jun,LI Yan.Experimental Study on Characteristics of Oscillating-grid Turbulence in Flume[J].Journal of North China Institute of Water Conservancy and Hydroelectric Power,2007,28(2):19-21. |
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| Authors: | WANG De-xiang WANG De-jun LI Yan |
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| Affiliation: | 1.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China; 2. Hydrology and Water Resourse Exploration Management Center,Tianjing 300061, China |
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| Abstract: | Oscillating-grid is an effective experimental method to study the characteristics of turbulence. The previous researches have been done experiments mostly in the water tank. In order to simulate turbulence of flow in river and research its characteristics, the characteristics of turbulence are studied by experiments in the water channel with ADV technique. The research results indicate that R. M.S. velocity linearly relates to the oscillating-grid frequency ; R. M.S. velocity decays by power exponent relates to the distance from the grid midplane; and the relationship between the geometrical factors and the free movement space of water is direct proportion. |
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| Keywords: | grid turbulence flume frequency decay geometrical factors |
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