高さの異なるストリートキャニオン内の流れと拡散に関する風洞実験 : 市街地における大気汚染物質の拡散に関する実験的研究その6

概要

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Results of wind tunnel experiments on the influence of roadside building height on the flow and concentration fields in urban street canyons are presented. 1) A cavity eddy was always formed in the street canyon when the leeward building height was equal to or larger than the windward building; the concentration in the street canyon was low. 2) Cavity eddies were not formed when the windward building was higher than the leeward; the concentration .was rather high in the street canyon. 3) Reverse flow occurred in the street canyon bottom regardless of cavity eddy existence; the concentration at the windward side was always higher than at the leeward. 4) The concentration distribution normalized by the average canyon concentration was somewhat similar for various canyon configurations (varying width of street or roadside building height) and the atmospheric stability. 5) It was possible to roughly estimate the concentration distribution by using the airiness factor and the average concentration distribution pattern normalized by the average canyon concentration.
社団法人日本建築学会の論文
2001-03-30