Development of gas dispersion within urban canyons considering turbulent flows outside surface layer
| Project/Area Number |
25820289
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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 |
Architectural environment/Equipment
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| Research Institution | Central Research Institute of Electric Power Industry |
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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) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | ガス拡散 / 乱流構造 / 数値シュミレーション / 都市 / 大気拡散 / 乱流 / 都市防災 / 数値シミュレーション / 都市キャニオン |
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| Outline of Final Research Achievements |
Large-eddy simulations were conducted to investigate the effect of the turbulent flows outside surface layer on the gas removal from the two-dimensional and three-dimensional street canyon. The results show that the mean concentration within the canyon increases as the fetch increases, and roughly reach a near constant value after fifth to seventh canyon. In addition, at the first and third canyons the low-momentum fluid does not always affect pollutant removal, but as the fetch increases the low-momentum fluid gradually affects pollutant removal.
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Report
(3 results)
Research Products
(8 results)
