an experimental study on vehicular emission dispersion through double storied building model configurations
Krishna M. K,Mahalingegowda R. M
Published in International Journal of Advanced Research in Civil,Structural,Environmental and Infrastructure Engineering and Developing
ISSN: 2320-723X Impact Factor:1.7 Volume:2 Issue:3 Year: 01 March,2015 Pages:120-129
Abstract
In this paper line source dispersion around urban buildings has been investigated by physical modelling using arrays of buildings- like obstacles at scale 1:100 in boundary layer wind tunnel for double storied buildings and compared with field data. The particular effect of obstacle width- to - height ratio (S/H) was examined for a fixed obstacle plan area density. In comparison, experimentally observed σz values are below the field values. Again, wind tunnel double storied inline array configuration data appears to be more convective and /or less diffusive than the field data. In addition concentration measured in the wind tunnel was consistently larger than field data measurement. This may be due to different roughness conditions simulated in wind tunnel from that of field. Even with quantitative differences, the inline and staggered array results showed the same general trend.Study concluded that despite some quantitative differences, the field result and wind tunnel showed the same general trend of vertical dispersion parameter.
Kewords
Atmospheric Boundary Layers, wind tunnel study, vehicular emission dispersion, array of building obstacles.
Reference
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