A Study of Full-Load Draft Tube Surge in Hydraulic Power Turbine
| Project/Area Number |
23760158
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Fluid engineering
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| Research Institution | Osaka University |
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Principal Investigator |
YONEZAWA Koichi 大阪大学, 大学院・基礎工学研究科, 助教 (00362640)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2011: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Keywords | 流体機械 / キャビテーション不安定現象 / キャビテーション / 旋回流 / ディフューザ不安定 / 動特性 |
|---|
| Research Abstract |
Experimental and numerical investigations of a surge in a hydraulic turbine draft tube were carried out using a subscale model. It has been confirmed that the draft tube surge occurs at wide range of the operation condition from the low flow rate through the over load conditions. The frequencies of the surge are different from those of the vortex rope precession. Additionally, dynamic characteristics of the cavitation in the draft tube were examined experimentally by imposing flow rate fluctuations.
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Report
(3 results)
Research Products
(8 results)
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[Presentation] ドラフトチューブの動特性の計測に関する研究2013
Author(s)
山本啓太,米澤宏一,宮川和芳,Avellan Francois,Doerfler Peter,辻本良信
Organizer
日本機械学会関西支部第88期定時総会講演会
Place of Presentation
大阪工業大学,大阪市
Year and Date
2013-03-17
Related Report
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