# Dispersion of (light) inertial particles in stratified turbulence

M. van Aartrijk, H.J.H. Clercx

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### Abstract

We present a brief overview of a numerical study of the dispersion of particles in stably stratified turbulence. Three types of particles arc examined: fluid particles, light inertial particles ($\rho_p/\rho_f = \mathcal{O}(1)$) and heavy inertial particles ($\rho_p/\rho_f \gg 1$). Stratification suppresses the vertical dispersion of all three types of particles compared to isotropic turbulence. The horizontal dispersion, on the otherhand is enhanced. The importance of the forces that act on inertial particles are examined and the results are shown for particles with $\rho_p/\rho_f = 10$. The inertia of the particles results in a nonuniform particle distribution over the domain. This preferentia concentration effect is presented here for heavy particles, and it is found that the effect is stronger in isotropic turbulence than in stratified turbulence.
Original language Undefined Proceedings of the Seventh International ERCOFTAC Workshop on Direct and Large-Eddy Simulation Vincenzo Armenio, Bernardus J. Geurts, Jochen Fröhlich Dordrecht Springer 469-476 6 978-90-481-3651-3 https://doi.org/10.1007/978-90-481-3652-0_68 Published - 2010 7th ERCOFTAC Workshop on Direct and Large-Eddy Simulation VII 2008 - Trieste, ItalyDuration: 8 Sep 2008 → 10 Sep 2008Conference number: 7

### Publication series

Name ERCOFTAC Series Springer 13 1382-4309

### Workshop

Workshop 7th ERCOFTAC Workshop on Direct and Large-Eddy Simulation VII 2008 DLES Italy Trieste 8/09/08 → 10/09/08

### Keywords

• IR-75959
• EWI-19312
• METIS-276292

### Cite this

van Aartrijk, M., & Clercx, H. J. H. (2010). Dispersion of (light) inertial particles in stratified turbulence. In V. Armenio, B. J. Geurts, & J. Fröhlich (Eds.), Proceedings of the Seventh International ERCOFTAC Workshop on Direct and Large-Eddy Simulation (pp. 469-476). (ERCOFTAC Series; Vol. 13). Dordrecht: Springer. https://doi.org/10.1007/978-90-481-3652-0_68