2010 Fiscal Year Final Research Report
Study of universality in turbulent flows at high Reynolds number from the view point of computational science
| Project/Area Number |
20340099
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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 |
Mathematical physics/Fundamental condensed matter physics
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| Research Institution | Nagoya University |
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Principal Investigator |
KANEDA Yukio Nagoya University, 工学研究科, 教授 (10107691)
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| Co-Investigator(Kenkyū-buntansha) |
ISHII Katsuya 名古屋大学, 情報基盤センター, 教授 (60134441)
ISHIHARA Takashi 名古屋大学, 大学院・工学研究科, 准教授 (10262495)
YOSHIMATSU Katsunori 名古屋大学, 大学院・工学研究科, 助教 (70377802)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 乱流 / 高いレイノルズ数 / 直接数値シミュレーション / データ解析 / 統計的普遍性 / 壁乱流 / ウェーブレット解析 / 秩序渦シミュレーション |
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| Research Abstract |
The universality in the statistics of turbulent flows at high Reynolds number as well as the idea of the universality were examined on the basis of the analysis of the numerical data by large-scale direct numerical simulation. Particular attention was paid to (A) the universality inherent in the turbulence dynamics and (B) the universality of wall bounded turbulence. Study was also made on the method of coherent vortex simulation, which is based on the extraction of coherent vortices by the use of wavelet analysis and is expected to be useful for reducing the degrees of freedom to be treated in turbulence modeling.
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