Abstract
The air pollution in a city region has not been improved fully yet. Especially, the rate of achievement of environmental quality standard achievement of NOx or SPM cannot yet grasp the tendency of an improvement in an urban area where the heavy traffic roads and the highways are concentrated. For this reason, autonomy and road administrator are planning to introduce air purifiers and investigating the effect of such facilities. This research aims to clarify suitable placement, performance assessment and improvement of compact air purifier (act as denitrification and dust precipitator). In this study, simulation of wake flow induces by a truck and automobile emitted NO transport and diffusion were numerically simulated by two dimensional model.
