| Project/Area Number |
23360085
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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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 | Osaka University |
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Principal Investigator |
TAKEO KAJISHIMA 大阪大学, 工学(系)研究科(研究院), 教授 (30185772)
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| Co-Investigator(Kenkyū-buntansha) |
TAKEUCHI Shintaro 大阪大学, 大学院工学研究科, 准教授 (50372628)
OMORI Takeshi 大阪大学, 大学院工学研究科, 助教 (70467546)
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| Project Period (FY) |
2011-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥14,170,000 (Direct Cost: ¥10,900,000、Indirect Cost: ¥3,270,000)
Fiscal Year 2013: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2012: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2011: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
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| Keywords | キャビテーション / 気泡 / 気液界面 / 相変化 / 計算流体力学 / 乱流 / ラージエディシミュレーション / 翼 / 固気液接触線 |
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| Outline of Final Research Achievements |
In the cascade of high-speed pumps or narrow passage like a valve, cavitation phenomena are observed in low pressure region of liquid flow. Cavitation causes the performance reduction, noise and vibration, sometimes resulting in damage of fluid machineries. The objective of this research project is to develop a method for the numerical simulation of cavitating turbulent flows, which is applicable to better understanding of cavitation phenomena and design tool of fluid machineries. First, we improved our original method, namely the large eddy simulation (LES) for turbulent flows. Simultaneously, we developed elemental techniques to deal with motion, deformation and phase change at the liquid-vapor interface, which are to be integrated to our LES code.
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