2009 Fiscal Year Final Research Report
On the direct interactions between a solid particle and coherent eddies (for the understandings of turbulence modification phenomenon)
| Project/Area Number |
19760116
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Fluid engineering
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| Research Institution | Osaka University |
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Principal Investigator |
TSUJI Takuya Osaka University, 工学研究科, 特任准教授 (90379123)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 流体工学 / 混相流 / 乱流変調 / 直接数値計算 / 埋め込み境界法 / 多重スケールPIV |
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| Research Abstract |
Interactions between a solid particle and turbulent coherent structures are observed in a fully-developed wall turbulence by means of direc numerical simulation based on immersed boundary method and multi-scale PIV. From the observation of interactions between a particle existing near the wall and a coherent structure which has high turbulent energy, it is observed that the coherent structure promotes the formation of wake behind the particle and enhances turbulent fluctuation.
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