摘要
基于机组甩负荷工况下变顶高尾水系统尾水管进口处真空度的计算公式,推导出保证尾水管进口满足真空度要求的顶坡计算分析公式。在机组甩负荷后明渠最大负涌浪以及安全顶坡分析公式的基础上,提出了变顶高尾水洞体形设计的程序性定量化方法,从而可对变顶高尾水洞的体形进行定量化的分析设计。由顶坡坡度分析公式所获得的计算结果与物理模型实验结果进行了比较,表明该公式是合理的。这些结果和方法可以方便地应用于工程初步设计。
The formula for the upper ceiling slope analysis of a tailrace tunnel with inclined ceiling was deduced from the formula for vacuum degree calculation in the draft-tube inlet of such tailrace tunnel under the condition of turbine load rejection.A procedural and quantitative method for the configuration design of tailrace tunnel with inclined ceiling was presented on the basis of upper ceiling slope analysis formula and maximum negative surge of open channel under the condition of turbine load rejection.The comparison between the results obtained from the upper ceiling slope analysis formula and model experiments show that the formula is reasonable.The results and methods can be easily applied to the preliminary design of tailrace tunnel with inclined ceiling.
出处
《水力发电》
北大核心
2010年第11期27-29,共3页
Water Power
基金
国家自然科学基金项目(50539070)
清华大学自主科研计划项目(2009THZ07060)
973项目(2006CB403304)
