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準一様乱流場中における蛇行プルームの乱流拡散現象の実験的解明(乱流レイノルズ数Rλの変化による平均特性の違い)
https://kitami-it.repo.nii.ac.jp/records/7995
https://kitami-it.repo.nii.ac.jp/records/7995d17b5280-ea32-49f5-a625-08ee7e0541be
名前 / ファイル | ライセンス | アクション |
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2014.02_準一様乱流場中における蛇行プルームの乱流拡散現象の実験的解明(乱流レイノルズ数Rλの変化による平均特性の違い).pdf (1.9 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2015-11-09 | |||||
タイトル | ||||||
言語 | ja | |||||
タイトル | 準一様乱流場中における蛇行プルームの乱流拡散現象の実験的解明(乱流レイノルズ数Rλの変化による平均特性の違い) | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Experimental investigation on turbulent diffusion phenomena of meandering plume in the quasi-isotropic turbulent field (Variation of mean concentration properties for turbulent Reynolds numbers) | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Atomosheric turbulent diffusion | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Wind tunnel | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Meandering plume | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Lagrangian property | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権URI | open access | |||||
その他のタイトル | ||||||
その他のタイトル | Experimental investigation on turbulent diffusion phenomena of meandering plume in the quasi-isotropic turbulent field (Variation of mean concentration properties for turbulent Reynolds numbers) | |||||
著者 |
小杉, 淳
× 小杉, 淳× 蒔田, 秀治× 羽ニ生, 博之 |
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著者別名 | ||||||
姓名 | KOSUGI, Atsushi | |||||
言語 | en | |||||
著者別名 | ||||||
姓名 | MAKITA, Hideharu | |||||
言語 | en | |||||
著者別名 | ||||||
姓名 | HANIU, Hiroyuki | |||||
言語 | en | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Particle diffusion from a continuous point source was experimentally investigated to clarify the mechanism of turbulent diffusion for a wide range of turbulent Reynolds number Rλ. The values of Rλ were systematically changed from 43 to 445 by controlling turbulent intensity and vortex scale, using an active turbulent generator. Particle concentration was measured by a laser system. The mean concentration profiles agree with Gaussian distribution, and streamwise growth rate of the variance became larger as Rλ increased, as predicted by the Taylor's diffusion theory. Lagrangian properties (TL,vL,T0) were determined from the streamwise growth rate of the variance σT2. Diffusion fields shifted from the short-time diffusion dominated by meandering diffusion to the long-time diffusion dominated by relative diffusion as Rλ increased. Then we discussed the ratio, β(=TL/TE), between the Lagrangian and Eulerian time scales. The contributions of the relative and meandering diffusions to the total diffusion were evaluated by the Lee & Stone's model. | |||||
書誌情報 |
日本機械学会論文集 巻 80, 号 810, p. FE0023, 発行日 2014-02 |
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DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | http://doi.org/10.1299/transjsme.2014fe0023 | |||||
権利 | ||||||
権利情報 | c 2014 一般社団法人日本機械学会 | |||||
出版者 | ||||||
出版者 | 一般社団法人日本機械学会 | |||||
著者版フラグ | ||||||
値 | publisher | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |