The (thermo-)dynamical processes taking place in the experimental devices (e.g., LACIS) are simulated using small scale models. Two different kinds of simulations are distinguished:

  • Computational fluid dynamics (CFD) simulations using FLUENT/FPM (FLUENT), capable to describe the coupled processes of flow, heat/mass transfer and particle/droplet dynamics are applied to design the experiments, to evaluate the experimental data, and to derive micro physical expressions and parameterizations from the experimental data.

  • Stand alone box models are applied for a closer look on single processes. For example, the so-called Soccer Ball model (Niedermeier et al. (2011), (2014); Soccer Ball-Modell) has been developed to investigate, whether the ice nucleation process is of singular or stochastic nature (a hypothesis, which has been controversially discussed in the past decades).