| Project/Area Number |
20560145
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Fluid engineering
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| Research Institution | Iwate University |
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Principal Investigator |
FUNAZAKI Ken-ichi Iwate University, 工学部, 教授 (00219081)
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| Co-Investigator(Kenkyū-buntansha) |
YAMADA Kazutoyo 九州大学, 工学研究院, 助教 (00344622)
TANIGUCHI Hideo 岩手大学, 工学部, 助教 (50292173)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | 流体機械 / タービン段 / 非定常効果 / 制御 / タービン / 内部流れ / 非定常性 / 実験 / 流れ解析 / 二次流れ / 高効率化 / ターボ機械 / 非定常 / CFD / 損失 / 非定常流 / 回転試験機 |
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| Research Abstract |
This paper presents an experimental study and numerical simulation of the unsteady flow mechanisms in a single stage axial flow turbine which is simulated the LP turbine airfoils. The target of this study is to verify the influence of the purge flow from the Rim-seal cavity on the flow field in the rotor passage, which leads to changes of the secondary flow behavior especially in the rotor hub region. To observe the unsteady flow pattern at rotor downstream, detailed 3-D unsteady measurements using a slant-type hot wire probe is performed. The result of unsteady measurement observed the secondary flow and the leakage flow in the tip region without the purge flow as well as the steady flow measurement with 5-hole probe. A three-dimensional, time-dependent numerical simulation shows the unsteady flow interactions between the main flow and purge flow.
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