水资源与水工程学报2017，Vol.28Issue(3)：168-172,5.DOI:10.11705/j.issn.1672-643X.2017.03.31
混流式水轮机尾水管涡带及压力脉动数值模拟
Numerical simulation of francis turbine draft tube vortex and pressure pulsation
齐继贺1
作者信息
- 1. 河南省水利水电学校,河南 周口 466001
- 折叠
摘要
Abstract
The unsteady numerical simulation of francis turbine was conducted with the application of ANSYS software in this study.Three partial opening changing conditions were analyzed under low flow conditions, and the change of pressure fluctuation by the partial load zone to draft tube vortex high part load zone was simulated.With the application of CFD numerical simulation, it is observed that with the change of the guide vane opening, the tail pipe vortex changed from double helical vortex to single helical vortex and columnar vortex, and the variation law of pressure fluctuation frequency and pulsating amplitude between the corresponding working conditions were analyzed, which is very important to study the mechanism of the pressure pulsation of the draft tube.关键词
混流式水轮机/导叶开度/尾水管涡带/压力脉动/螺旋涡/柱状涡/数值模拟Key words
francis turbine/guide vane opening/vortex core in draft tube/pressure pulsation/spiral vortex/cylindrical vortex/numerical simulation分类
建筑与水利引用本文复制引用
齐继贺..混流式水轮机尾水管涡带及压力脉动数值模拟[J].水资源与水工程学报,2017,28(3):168-172,5.
