A One-Dimensional Turbulence model with particles replicates cloud microphysical properties from a convection chamber

Clouds produced in a laboratory convection chamber consist of droplets of water, each experiencing a lifecycle consisting of activation, growth/decay, and sometimes fall out. These lifecycles are influenced by each droplet's unique trajectory through moist turbulent air and are coupled to the local temperature and water vapor fields via supersaturation. We efficiently model populations of these individual droplet lifecycles using One-Dimensional Turbulence (ODT) with the addition of cloud-droplet microphysics. ODT can simulate the Pi Chamber at Michigan Technological University, a moist Rayleigh-Benard Convection (RBC) chamber with configurable aerosol species and aerosol injection rates. Despite consisting of only one spatial dimension, ODT accurately replicates many aspects of direct numerical simulations of the Pi chamber microphysics due to its Kolmogorov-scale resolution and eddy implementation that resolves the wall boundary layers. Additionally, ODT demonstrates agreement with the Pi Chamber's basic microphysical characteristics such as mean droplet radius and in some cases droplet size distributions. Since ODT evolves individual droplets and is computationally efficient, it can simulate large parameter spaces to test theories of cloud microphysics.