Numerical Study of Flow around Twin Cubic Obstacles Issued from a Bent Chimney

—we present in this work a numerical study of pollutant dispersion resulting from a bent chimney around twin obstacles placed in the lee side of the source. A three-dimensional numerical model with the turbulent Reynolds Stress Model (RSM) and a non-uniform grid system was used to examine the effects of a double tandem obstacle cubic on the development of the incoming flow. The results obtained in three-dimensional configuration make possible the description of the dynamic and masses features and the determination of the velocity ratio effect on the pollutant distribution.