Simple Model for Turbulent Brownian Coagulation of Polydisperse Aerosols

A.T. Celada and A. Salcido (Mexico)


Polydispersed aerosols, brownian coagulation, turbulent coagulation, mathematical modelling, simulation.


A mean field model to analyze polydispersed aerosols coagulation is proposed. This model does not assume any monomeric structure of the aerosol particles such as it is done in the Smoluchowsky theory. Instead it uses a probabilistic estimate of the rates of production and consumption of the aerosol particles which is dependent on the diameter ranges of the colliding particles. To formulate the balance equation of the model it is assumed that only binary collisions may occur between the aerosol particles, that collisions preserve mass and volume, and that colliding particles always coagulate. We tested the model trying to reproduce the results of some aerosol coagulation experiments carried out by Kim et al. [1], Rooker and Davies [2], and Okuyama et al. [3], under brownian and turbulent brownian conditions. The computer simulation results were in good agreement with the experimental data.

Important Links:

Go Back