書誌事項
- タイトル別名
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- LES ANALYSIS ON ATMOSPHERIC DISPERSION IN SPATIALLY-DEVELOPING TURBULENT BOUNDARY LAYER IN ACTUAL URBAN AREA
- ジツザイ トシ ニ オケル クウカン ハッタツガタ キョウカイソウ ランリュウ チュウ ノ タイキ カクサン ニ カンスル LES カイセキ
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抄録
Large-eddy simulation is applied to the problem of atmospheric dispersion inside urban area for oncoming turbulence, which is time-sequentially generated by unsteady numerical simulation of spatially-developing boundary layer in the driver unit as another computational domain. The present numerical model is validated in comparison with the previous field experimental results for plume dispersion through regular arrays of roughness blocks. We investigate the characteristics of flow and plume dispersion in actual urban area and occurrence of peak-to-r.m.s. concentrations based on various kinds of surface roughness for safety analysis. Obtained results are as follows; 1) The patterns of spatial distribution of mean concentration in actual urban area is very different from those in regular arrays of roughness blocks. 2) Fluctuating concentrations in actual urban area have special features, which can not be explained by the physical mechanism of the dispersion process obtained in regular arrays of roughness blocks.
収録刊行物
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- 日本建築学会環境系論文集
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日本建築学会環境系論文集 71 (604), 31-38, 2006
日本建築学会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390001205202809984
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- NII論文ID
- 110004751211
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- NII書誌ID
- AA11830377
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- ISSN
- 1881817X
- 13480685
- http://id.crossref.org/issn/13480685
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- NDL書誌ID
- 7987894
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可