Numerical simulation of Brownian coagulation under turbulent mixing conditions

Brownian coagulation under turbulent mixing conditions is considered. The aerosol kinetics module integrated into the three-dimensional hydrodynamic model describing the process of turbulent mixing on the basis of large-eddy simulation makes it possible to show that the mixing of air masses containing different-sized aerosol particles intensifies the coagulation processes. It is demonstrated that the use of Reynolds-averaged hydrodynamic equations, which are widely used for the simulation of turbulent flows, can lead to a significant underestimation of coagulation rates.