| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Outline of Final Research Achievements |
In environmental impact assessment in Japan, over 1 hour averaged concentration is generally used. To estimate the concentration in an urban canyon, a numerical simulation considering a wind directional fluctuation may be needed, but the effect of wind directional fluctuation on a gas dispersion within an urban canyon is unknown. In the present study, large-eddy simulations were conducted for a gas dispersion within an idealized urban canopy considering wind directional fluctuation. The results show that the effect of wind directional fluctuation on gas dispersion within the urban canopy is small.
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