Visualization of Droplet Dynamics in Cloud Turbulence

Authors: Bipin Kumar (Indian Institute of Tropical Meteorology), Matt Rehme (National Center for Atmospheric Research), Neethi Suresh (Indian Institute of Tropical Meteorology)

Abstract: The study of droplet dynamics is a crucial part of cloud physics and involves investigation of each and every droplet’s properties. It is difficult to carry out such investigations using field observations. Small scale simulation is one method to study such phenomena, and visualization of these processes provides a deep and quick understanding. This work depicts data obtained from Direct Numerical Simulation (DNS) of entrainment and mixing processes at a cloud’s edge, which affect the droplet dynamics due to evaporation and condensation. This simulation contains coupled Eulerian and Lagrangian frames. Animations are created for both Eulerian grid data and Lagrangian droplet movement. Scientific visualization provides a way to examine these turbulent properties in a particular part of a cloud and learn about droplet evolution and mixing phenomena in such highly turbulent areas.

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