This is a past event.

Abstract:

Direct numerical simulation (DNS) of turbulent air flow and the detailed computation of Lagrangian dynamics of cloud droplets with cloud microphysical processes are very useful and powerful to obtain new knowledge about fundamental cloud physics. We have developed a DNS model, the "cloud microphysics simulator", and successfully computed the continuous growth of cloud droplets to rain drops from the microscopic view points. In this talk, I will provide an overview of the recent results of cloud microphysics simulator regarding the formation of the steady-state size distribution of droplets due to collision-coalescence and condensation-evaporation in turbulence. I also show that classical theories of turbulence and statistical mechanics can be applied to obtain the basic understanding of the formation process.

Bio:

Dr. Izumi Saito is an assistant professor in Department of Physical Science and Engineering at the Nagoya Institute of Technology in Japan.