摘要
利用单点三维流速测量仪(ADV)对顺直明渠岸边侧向45°取水口的近区水域进行了三维流速测量。以分流流速比η为主要参数,分析了取水口近区水域的水力特性,包括取水分流宽度、分槽回流特性及口门断面紊动特性等。将本文的部分试验结果与90°取水口的结果进行了对比,结果表明45°取水口附近的水流更加平顺,口门断面处的流速分布更加均匀,分槽内净进流宽度更大。
The three dimensional flow structure in a 45° lateral intake in open channel is studied in this paper by means of measurement of velocity field with a 3-D Acoustic Doppler Velocimeter （ADV）.. Taking the diverted velocity ratio as a main parameter, the authors observed and analyzed hydraulic behavior in the vicinity of the intake, including diversion width and backflow characteristics. The most important position ＂gate section＂ is investigated in detail and the three dimensional flow characters at this section are analyzed. Some results are compared with those of 90° lateral intake, and it is shown that the flow pattern in the 45° lateral intake is better than that in 90° one.
出处
《中国水利水电科学研究院学报》
2006年第4期264-270,共7页
Journal of China Institute of Water Resources and Hydropower Research
关键词
明渠
侧向取水
水力特性
ADV测速
open channel
lateral intake
hydraulic behavior
ADV technology
