Droplet size distribution in homogeneous isotropic turbulence

Abstract

We study the physics of droplet breakup in a statistically stationary homogeneous and isotropic turbulent flow by means of high resolution numerical investigations based on the multicomponent lattice Boltzmann method. We verified the validity of the criterion proposed by Hinze (1955) for droplet breakup and we measured the full probability distribution function (pdf) of droplets radii at different Reynolds numbers and for different volume fraction. By means of a Lagrangian tracking we could follow individual droplets along their trajectories, define a local Weber number based on the velocity gradients and study its cross-correlation with droplet deformation.

10 pages, 6 figures

References in corpus (3)

• Heavy particle concentration in turbulence at dissipative and inertial scales
• Convection in multiphase flows using Lattice Boltzmann methods
• Mesoscopic lattice Boltzmann modeling of soft-glassy systems: theory and simulations

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