Effects of turbulent organized structures on gas dispersion in aurban area
| Project/Area Number |
23710199
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Social systems engineering/Safety system
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| Research Institution | 一般財団法人電力中央研究所 (2012)
Central Research Institute of Electric Power Industry (2011) |
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Principal Investigator |
MICHIOKA Takenobu 一般財団法人電力中央研究所, 環境科学研究所, 主任研究員 (20371370)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Keywords | 都市防災 / ガス拡散 / 乱流構造 / 風洞実験 / 数値シミュレーション |
|---|
| Research Abstract |
Large-eddy simulations were conducted to investigate mechanismof pollutant gas removal form urban canyons under neutral, stable and unstable thermalstratification. The result shows that the gas removal from the canyon is strongly relatedto the size of the low-momentum fluid, defined as a region in the flow where instantaneousstreamwise velocity is lower than the local mean velocity. Irrespective of the thermalstratification, the ejection which transports low-momentum fluid upward has influenceon pollutant removal from the canyon.
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Report
(3 results)
Research Products
(13 results)
