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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Yang Yaoyao Hongjie Wang Ruzhi Gong Xianzhu Wei Wanjiang Liu |
| Copyright Year | 2011 |
| Description | Author affiliation: Harbin Institute of Large Electrical Machinery, Harbin, P. R. China (Xianzhu Wei; Wanjiang Liu) || School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, P. R. China (Yang Yaoyao; Hongjie Wang; Ruzhi Gong) |
| Abstract | In order to study the cause of Francis turbine abnormal oscillation under small opening condition, CFD method was adopted to analyze the flow filed and its impact on turbine stability. Numerical simulation was performed on the commercial CFD code FLUENT 6.2, using RNG κ-ε model. Through an effective validation of the computation result and detailed flow analysis, the paper showed vortices existed in runner and draft tube flow field, abnormal pressure distribution on blades and vanes, and reverse flow in guide vanes under reverse pump condition. The result shows that the unstable flow under small opening condition leads to an increase of turbine instability, and is one possible reason of the abnormal oscillation. |
| Starting Page | 1675 |
| Ending Page | 1678 |
| File Size | 3798449 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781612840871 |
| e-ISBN | 9781612840888 |
| DOI | 10.1109/EMEIT.2011.6023004 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2011-08-12 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | CFD Hydraulic turbines Stability Blades Small opening condition Stability analysis Numerical models Electron tubes Francis Turbine Numerical stability |
| Content Type | Text |
| Resource Type | Article |
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