Relative velocities in bi-disperse turbulent aerosols: simulations and theory

Nordita Astrophysics seminars

Wednesday 03 October 2018
from 13:30
to 14:00 at
122:026, Nordita West

Speaker :

Akshay Bhatnagar (Nordita)

Abstract :

We perform direct numerical simulations of a bi-disperse suspension of heavy spherical particles in forced, homogeneous, and isotropic three-dimensional turbulence. We compute the joint distribution of relative particle distances and longitudinal relative velocities between particles of different sizes, and compare the results with recent theoretical predictions [Meibohm et al. Phys. Rev. E 96 (2017) 061102] for the shape of this distribution. We also compute the moments of relative velocities as a function of particle separation, and compare with the theoretical predictions. We observe good agreement.