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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.

arXiv:1809.10440

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