Experimental investigation of microparticle erosion in shear flows

From microplastics to pollen grains resuspending into the atmosphere, the resuspension of microparticles by a turbulent gas flow occurs in many natural, environmental and industrial systems. A subtle interplay between drag, lift and adhesion forces occur during the particle detachment. In this lecture, the role of turbulence and wall roughness on particle deposition and resuspension will be explained. I will also showcase how can one measure aerosol deposition and resuspension in opaque and complex geometries.