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 |
Section | 一般 |
Research Field |
Fluid engineering
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Research Institution | University of Yamanashi |
Principal Investigator |
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Project Period (FY) |
2015-04-01 – 2018-03-31
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Project Status |
Completed (Fiscal Year 2017)
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Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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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 / 高レイノルズ数乱流輸送 / 壁面乱流場 / 大規模直接数値計算 / 乱流構造 |
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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Report
(4 results)
Research Products
(24 results)