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The longstanding issue of turbulent dispersion of heavy droplets is revisited using a novel experimental technique. Within a cloud of phosphorescent droplets, thin cylindrical volumes are tagged and recorded in a high-speed fashion as they are advected by the flow. The widening of these volumes provides experimental evidence of dispersion which is faster than that of fluid parcels. We explore the effect of inertia in the dispersion of heavy droplets by experimenting with several droplet diameters.
Author(s):
Humberto Bocanegra Evans
Applied Physics, Eindhoven University of Technology
Netherlands
Nico Dam
Mechanical Engineering, Eindhoven University of Technology
Netherlands
Willem van de Water
Applied Physics, Eindhoven University of Technology
Netherlands