文章基本信息

标题：Experiments and numerical simulations of a flow instability in a low-specific-speed pump-turbine
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作者：Koichiro Matsumura ; Kazuhiko Yokota ; Wakana Tsuru 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：2019
卷号：240
期号：7
页码：1-7
DOI：10.1088/1755-1315/240/7/072042
出版社：IOP Publishing
摘要：In order to clarify the mechanism of the fluid oscillation, which occurs for a shut-down sequence of a pump-turbine, the experiment and numerical simulation of the pump-turbine were performed. The pressure fluctuation is measured at inlet, outlet and four points between the runner and guide vanes. Parameters are flow rate, rotating speed and guide vane opening ratio. Results show that the characteristic curve shows so-called "S-shaped" and the pressure oscillation occurs in the "S-shaped" region.