FURI | Fall 2019
Dust Entrainment and Dust Devils
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.
Hezekiah Villarin Grayer
Hometown: Glendale, Arizona, United States
Graduation date: Spring 2020