文章基本信息

标题：Influence of the velocity field at the inlet of a Francis turbine draft tube on performance over an operating range
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作者：R Susan-Resiga ; S Muntean ; T Ciocan 等
期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2012
卷号：15
期号：3
DOI：10.1088/1755-1315/15/3/032008
出版社：IOP Publishing
摘要：We evaluate the sensitivity of the draft tube losses to the velocity field entering a given Francis turbine draft tube while this turbine is operated within a range of discharge values including part-load and full-load regimes. Within the present methodology, the velocity field at the draft tube inlet is determined prior knowing the runner by solving a variational problem for the kinematically constrained swirling flow.