TITLE:
Impact of Noise Barriers on Air-Pollution Dispersion
AUTHORS:
Josef Brechler, Vladimir Fuka
KEYWORDS:
LES Modelling, Noise Barriers, Traffic Air-Pollution, Air-Pollution Transport and Dispersion
JOURNAL NAME:
Natural Science,
Vol.6 No.6,
April
8,
2014
ABSTRACT: The impact of noise
barriers on gaseous air-pollution dispersion was examined using the high-resolution
CLMM (Charles University LES (Large Eddy Simulation) Microscale Model). The
dispersion of a mixture of nitrogen oxides (denoted as NOx—a mix of NO and NO2)
was computed, providing the simulation in which wind direction is approximately
perpendicular to the noise barriers. The barriers were assumed to be straight
and infinitely long, with a height of 3 m. Dispersion of NOx was
modeled for situations with no noise barriers along the highway, barriers on
both sides, and for a single barrier on the upwind and downwind sides of the
highway. The modelling results are presented and discussed in relation to
previous studies and the implications of the results are considered for
pollution barriers along highways.