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Study on velocity distribution behind the trashrack in lateral intake/outlet of pumped storage power station
Author(s): 
Pages: 1329-1335
Year: Issue:  11
Journal: JOURNAL OF HYDRAULIC ENGINEERING

Keyword:  抽水蓄能电站侧式进/出水口流速分布拦污栅;
Abstract: 本文以某抽水蓄能电站上水库进/出水口为例,通过水工模型试验,研究了侧式进/出水口拦污栅断面的流速分布规律,着重分析了扩散段隔墩布置型式与过渡段体型对拦污栅断面流速分布的影响.研究结果表明:上弯段后过渡段长度不足与圆变方段起始断面处采用变坡布置是导致拦污栅断面流速分布欠佳的主要原因,而三个分流隔墩的墩头位置在扩散段起始断面处齐平、对水流流态的影响也是导致拦污栅断面流速分布出现异常的原因之一.在上述研究成果的基础上,提出了改善拦污栅断面流速分布并有效消除负流速的工程措施.
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