摘要
以肯斯瓦特水利枢纽工程为例,通过水工模型试验,测试其设计水位工况下和泄洪消能标准水位工况下溢洪道泄洪时底板的流速及压力分布,并根据空化理论模型对其底板沿程空化数进行了计算。结果表明:可以通过溢洪道流速特性和底板压力分布来分析过流面的空化空蚀特点;在实际工程中,可采用优化过流面的体形、设置掺气减蚀设施、控制溢流面的不平整度以及使用抗空蚀材料等方法来防止空化和空蚀的发生。
By Kensi wate hydraulic project as an example,through hydraulic model test,the flow velocity and pressure distribution floor of the design level conditions and flood discharge standards under the condition of water level were tested at the spillway flood discharge.According to the theory of cavitation model,the on-way cavitation number of bottom was calculated.The results show that： we can through the spillway velocity characteristic and the bottom pressure distribution to analyze the flow cavitation characteristics;we can optimize the shape of bleeding surface,set facilities for aeration and cavitation reduction,control the unevenness of the bleeding surface and make use of cavitation resistance materials to prevent cavitation and cavitation erosion in practical projects.
出处
《人民黄河》
CAS
北大核心
2012年第4期93-95,共3页
Yellow River
关键词
模型试验
溢洪道
空蚀
model test
spillway
cavitation erosion
