In this study, dust entrainment and aerosol dynamics within the formation of dust devils are investigated numerically. Particles lying on the boundary are resolved in a periodic Rayleigh-Benard convection to investigate details of entrainment in scenarios analogous to the atmosphere. The details provided by the high-fidelity platform are powerful tools develop models of dust emission in the presence of no mean wind. A dependence of entrainment is found and documented for particle density, size along with the strength of stratification.
In this study, dust entrainment and aerosol dynamics within the formation of dust devils are investigated numerically. A dust entrainment scheme based on local velocities is implemented in the canonical Rayleigh-Benard convection with a particle advection scheme to produce a framework to study dust devils. The model for dust emission based on local flow quantities predicts a more accurate uplift than the previous mean-shear models, which noticeably under-predict uplift. The developed models are useful for understanding the dynamics of dust devils and dust storms, which will help mitigate their detrimental effects to health and environment.