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本文阐述了由水动试验确定尾水管断面尺寸的不足,提出了基于相似理论的混流式水轮机尾水管设计方法,并将该方法用以某电站尾水管进行模型构建。最后,对该模型进行流场分析,验证了设计的合理性。
In this paper, the shortage of draft tube section size determined by hydrodynamic test is expounded. A design method for draft tube of Francis turbine based on similarity theory is proposed. The method is used to build a draft tube of a power station. Finally, the flow field analysis of the model verifies the rationality of the design.