Numerical Simulation of the Dispersion of a Plume of Exhaust Gases from Diesel and Petrol Engine Vehicles

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TitreNumerical Simulation of the Dispersion of a Plume of Exhaust Gases from Diesel and Petrol Engine Vehicles
Publication TypeCommunication International
Year of Publication2012
AuthorsZAHLOUL, H, .MERIEM-BENZIANE, M
Mots-clésConcentration, dispersion, exhaust plume, pollutant
Abstract

The objective of this work is to study numerically the dispersion characteristics of dieselengine vehicle pollutants at an idle condition in an idealized and simplified environment. The Fluent code with the k-εeddy dissipation turbulent model was used for the numerical simulation of the particulate concentrations of exhaust plume NOx, CO and HC.
The simulated results match very well with the experimental ones
close to the source of emission but decay to the ambient
concentrations much slower. Despite the difference in the initial
concentrations, the pollutants decayed exponentially in all directions.
The effects of the initial emission concentration and exit velocity
have been investigated.

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