May 6, 2021

The collision of water droplets in a turbulent cloud-clear air environment has been investigated in the master thesis by Mattia Tomatis.  

In this work, they emphasize the numerical measurements of collision kernels in homogeneous, isotropic, cloud turbulent environments but also in very anisotropic environments as the turbulent mixing between cloud and clear air, where are distributed polydisperse and monodisperse population of particles. A collision kernel is substantially a measure of collision probability between two classes of particles, characterized by volume (radius).  Finally,  results have been compared with the analytical model available in scientific literature.