| 浅论掺气设施的消能作用 |
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| 引用本文： | 栗帅,张建民,陈剑刚,胡小禹.浅论掺气设施的消能作用[J].水力发电,2011,37(7). |
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| 作者姓名： | 栗帅 张建民 陈剑刚 胡小禹 |
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| 作者单位： | 四川大学水力学与山区河流开发保护国家重点实验室,四川成都,610065 |
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| 基金项目： | 教育部重点项目，教育部新世纪优秀人才支持计划项目 |
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| 摘 要： | 掺气减蚀设施不仅能有效地减缓空蚀和磨蚀的发生,而且具有一定的消能作用.结合某水电站溢洪道的模型试验研究,分析了溢洪道掺气减蚀工程措施的消能效果,并首次定量地计算了消能率.试验和计算结果表明,在高水头、大单宽流量溢洪道中每道掺气挑坎的消能水头为2～5 m,随着级数的增加消能水头逐渐增加.试验还表明,在满足掺气要求和水流流态平稳的条件下,尽可能多设置掺气设施不仅不会增加工程量,还可以降低泄槽因高速水流冲刷破坏的风险,而且有利于下游消能防冲设计的优化.
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| 关 键 词： | 掺气坎 掺气减蚀 消能 模型试验 |
Study on the Energy Dissipation of Aerator |
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| Li Shuai,Zhang Jianmin,Chen Jiangang,Hu Xiaoyu.Study on the Energy Dissipation of Aerator[J].Water Power,2011,37(7). |
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| Authors: | Li Shuai Zhang Jianmin Chen Jiangang Hu Xiaoyu |
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| Institution: | Li Shuai,Zhang Jianmin,Chen Jiangang,Hu Xiaoyu(State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University,Chengdu 610065,Sichuan,China) |
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| Abstract: | Air entrainment facilities can not only effectively reduce the occurrence of cavitation and abrasion,but also has a certain role on energy dissipation.Combining with the experimental research of a spillway model,the energy dissipation of the aerator in the spillway is analyzed and the energy dissipation rate is firstly quantified.The results show that the head will decrease about 2-5 m after flowing through an aerator in a spillway with high water head and large unit discharge,and the head decrease will be ... |
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| Keywords: | aerator air entrainment for cavitation reducing energy dissipation model test |
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