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arXiv · 1809.10440

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

Akshay Bhatnagar·K. Gustavsson·B. Mehlig·Dhrubaditya Mitra
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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.

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Akshay Bhatnagar, K. Gustavsson, B. Mehlig, Dhrubaditya Mitra. 2018-12-20. Relative velocities in bi-disperse turbulent aerosols: simulations and theory. https://doi.org/10.1103/physreve.98.063107

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