Computational Fluid Dynamic Modeling of Aerosol Dynamic from Vehicle Exhaust Gas

Abstract

In recent years, air pollution is quite a serious issue. Air pollution has grown globally in the past years. Air pollution can be defined as the emission of harmful substances to the atmosphere. Aerosol particles are one of the most important factors affecting to the process related with atmospheric climate changes and air quality, which are effected on human health. Also, aerosol particles are effects on directly radiation balance in the earth through the reflecting solar radiation, and also indirectly affecting to the cloud formation and properties. So one important globally challenge is the reduce aerosol effects on human health, atmosphere, and air quality. For this, It is required to analyze the how particles formation, characteristics of particles, the behavior of particles and size of particles. In this thesis, computational fluid dynamic (CFD) modeling of aerosol dynamic has been presented. At first, the general dynamic equation of aerosols is introduce. Of the various possible parameters are affecting aerosols particle behavior, this work is mainly focused on aerosol particle formation. The fundamental of aerosol formation theory are briefly presented. The aerosol particles formation and dispersion mechanism were studied through the computational fluid dynamic (CFD) tool FLUENT. The population balance model was used for aerosol dynamic simulation. The objectives of this work are to develop the model for aerosol dynamic and obtain a better understanding of the mechanisms that affect aerosol particles formation and dispersion.