2017 Fiscal Year Final Research Report
Study on high-Reynolds number effects on wall-turbulence by means of the world's largest Direct Numerical Simulation
| Project/Area Number |
15K05790
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Fluid engineering
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| Research Institution | University of Yamanashi |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 高レイノルズ数 / 乱流輸送現象 / 直接数値計算 / 乱流モデリング |
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| Outline of Final Research Achievements |
Direct numerical simulations of turbulent channel flows up to Re_tau = 8000 were carried out by means of the high-order accuracy finite difference method. Our DNS code achieved the high-effective computational performance corresponded to 70 TFlop/s at 2048 nodes on the Earth Simulator.
It is notable that the logarithmic variations both in the mean velocity, and the streamwise Reynolds stress, are firstly confirmed for Re_tau = 8000. Present DNS database were published on the Web to analysis high-Reynolds number effects on wall-turbulence.
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| Free Research Field |
数値流体力学
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