Wind-tunnel Experiments on Improving the Natural Ventilation of a Street-Canyon.
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We conducted wind-tunnel experiments to study the effect of the heights and arrangements of roadside buildings on the flow and concentration fields in a street canyon.<BR>For the four building arrangements studied (Figs. 3 and 4), the best transfer of pollutants from street level to the upper air was by a zigzag array of tall and short roadside buildings (Fig. 4, Type 4). In this, for a tall building on the windward side of the canyon, the ascending flow along the roadside (leeward) wall was accelerated. For a tall building on the leeward side of the canyon, the descending flow along the roadside (windward) wall was also accelerated.<BR>These flows were linked together at the bottom of the canyon. Consequently, they formed a three-dimensional flow field in the canyon that efficiently carries air pollutants from the street-canyon bottom to the upper air.
- 社団法人 大気環境学会の論文
社団法人 大気環境学会 | 論文
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