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| 机翼形量水槽过流流态探讨 | |
| 引用本文： | 潘志宝,吕宏兴,雒天峰,敬向锋.机翼形量水槽过流流态探讨[J].节水灌溉,2010(2). |
| 作者姓名： | 潘志宝 吕宏兴 雒天峰 敬向锋 |
| 作者单位： | 1. 西北农林科技大学水利与建筑工程学院,陕西,杨凌,712100 2. 甘肃省水利科学研究院,甘肃,兰州,730000 3. 甘肃省发改委库区移民办公室,甘肃,兰州,730030 |
| 基金项目： | 国家“973”计划课题(2007CB407201);;国家自然科学基金重点项目(40335050) |
| 摘 要： | 为深入理解流经机翼形量水槽等短喉道量水槽的水流流态提供理论依据,并以期指导该类量水槽的设计与灌区应用,以大量试验观测为基础,采用能量和临界流方程理论推导出在理想状态下临界流发生的位置;用断面比能法分析了喉道内水流能量与流态的转换关系,并对过槽水流从流态上进行定性的讨论和总结。结果表明:对于平坡渠道机翼形量水槽而言,临界流发生在渠道侧向收缩达到极小值的断面(即喉口断面);分析得到5种情况下的3类过槽流态(缓流,临界流,急流)符合试验观测。若能控制量水槽的过流流态为急流,则可以取得较好的测流效果。 |
| 关 键 词： | 量水槽 渠道量水 临界流 机翼形 流态 断面比能 |
Discussion on Flow Regime through Airfoil-shaped Measuring Flume |
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| PAN Zhi-bao , Lü Hong-xing , LUO Tian-feng , JING Xiang-feng.Discussion on Flow Regime through Airfoil-shaped Measuring Flume[J].Water Saving Irrigation,2010(2). | |
| Authors: | PAN Zhi-bao Lü Hong-xing LUO Tian-feng JING Xiang-feng |
| Institution: | 1.College of Water Resources and Architectural Engineering/a>;Northwest A&F University/a>;Yangling 712100/a>;Shaanxi Province/a>;China/a>;2.Gansu Research Institute for Water Conservancy/a>;Lanzhou 730000/a>;3.Immigration Office of Reservoir Area/a>;Gansu Development and Reform Commission/a>;Lanzhou 730030/a>;China |
| Abstract: | The aim of this research is to provide theoretical supports for deeply understanding flow regime of flow through airfoil-shaped measuring flume,which is classified into throatless type measuring flume,and to guide flume design and its application in irrigation districts.Based on experimental observations,energy and critical flow equations are introduced to deduce the location of critical flow in ideal condition,method of section specific energy is adopted to analyze relationship between energy and flow regi... |
| Keywords: | discharge measuring flume canal water measurement critical flow airfoil-shaped flow regime section specific energy |
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