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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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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