| 明渠收缩段水深变化规律模型试验 |
| |
| 引用本文： | 谭乔木,张法星,薛顺民,等.明渠收缩段水深变化规律模型试验[J].中国农村水利水电,2014,0(4):140-143. |
| |
| 作者姓名： | 谭乔木 张法星 薛顺民 等 |
| |
| 作者单位： | 1.四川大学 水力学与山区河流开发保护国家重点试验室
2.中治长天国际工程有限责任公司 |
| |
| 摘 要： | 通过水力学模型试验，对收缩段内水深变化规律进行观测，分析了收缩角、底坡及流量的变化对收缩段内流态影响，总结出三者对水深变化及水面波动的影响规律，得到了收缩段出口Fr随收缩角和流量的变化关系。根据动量定理推导了收缩段内壅水水深的计算公式，公式计算得到的收缩段内水深与试验测得水深基本一致。
|
| 收稿时间： | 2013-08-02 |
| 修稿时间： | 2013-09-18 |
Experimental Investigation of the Water Depth Change Laws on the Contraction Sections of Open Channels |
| |
| Abstract: | The hydraulic model tests were performed to study the water depth change rules in the contraction section. The influences of the convergence angle in plan, the bottom slope and the flow rate to the flow patterns were analyzed. The water depth change laws and the water surface fluctuation were carried out. The relationships of the Froude numbers at the end of contraction section and the convergence angle and the flow rates were obtained. Furthermore, a formula with the purpose of calculating the water depth increases in contraction section was also derived out from Momentum Theorem, and the comparison between the calculated water depth and the experimental depth showed that the formula can be used to calculation the water depth increase in the open channel contraction sections. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《中国农村水利水电》浏览原始摘要信息 |
| 点击此处可从《中国农村水利水电》下载免费的PDF全文 |
