| 边界层理论在三角形长喉道量水槽流量计算中的应用 |
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| 引用本文： | 卢俊,张志昌,兀伟. 边界层理论在三角形长喉道量水槽流量计算中的应用[J]. 电网与水力发电进展, 2007, 23(2): 15-18 |
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| 作者姓名： | 卢俊 张志昌 兀伟 |
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| 作者单位： | 安康市水利水电设计院 陕西安康725000(卢俊)，西安理工大学 西安710048(张志昌)，西安工业大学 西安710048(兀伟) |
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| 摘 要： | 三角形长喉道量水槽是一种明渠量水设施。目前的流量计算主要是经验公式,经验公式的应用受试验条件的限制较大。本文根据边界层位移厚度和临界水深理论,推导了该量水槽流量的理论设计方法,该方法可以根据渠道的比降、糙率和设计流量灵活的调整量水槽的几何尺寸,喉道底部也可以根据量水范围的要求设计成平底或底部拱起。用文献[1]的实验结果进行了比较,计算与实测值一致。在此基础上,还提出了三种复合三角形断面长喉道量水槽的理论计算方法。
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| 关 键 词： | 三角形断面 复合断面 长喉道量水槽 边界层 流量 |
| 文章编号： | 1671-4768(2007)02-0015-04 |
| 修稿时间： | 2007-01-11 |
Application of Boundary layer Theory in Triangle Section Long Throat Flow-measuring Flume |
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| LU Jun,ZHANG Zhi-chang,WU Wei. Application of Boundary layer Theory in Triangle Section Long Throat Flow-measuring Flume[J]. Advance of Power System & Hydroelectric Engineering, 2007, 23(2): 15-18 |
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| Authors: | LU Jun ZHANG Zhi-chang WU Wei |
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| Abstract: | The triangle section long throat flow-measuring flume is a kind of open channel flowing measurement facilities.The discharge is usually calculated by experience formula.It is limited greater by the experimental condition.Based on the boundary layer thickness and critical water depth theory,a now theory design method is presented,which can obtain flexibly different geometry size of flow-measuring flume according to channel slope rate,rough rate and design discharge,hump-bottom or flat-bottom can be designed according to discharge scope in throat.Compared the result that method calculated with the example in document,it is shown that the Calculate result keeps the same with experiment value.The paper has also put forward three kinds of other theory computing methods of the composite triangle section long throat flow-measuring flume on that basis. |
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| Keywords: | Triangle section Composite triangle section Long throat flow-measuring flume Boundary layer theory Critical water depth Discharge |
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