Dispersion of (light) inertial particles in stratified turbulence

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

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    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 languageUndefined
    Title of host publicationProceedings of the Seventh International ERCOFTAC Workshop on Direct and Large-Eddy Simulation
    EditorsVincenzo Armenio, Bernardus J. Geurts, Jochen Fröhlich
    Place of PublicationDordrecht
    Number of pages6
    ISBN (Print)978-90-481-3651-3
    Publication statusPublished - 2010
    Event7th ERCOFTAC Workshop on Direct and Large-Eddy Simulation VII, DLES 2008 - Trieste, Italy
    Duration: 8 Sept 200810 Sept 2008
    Conference number: 7

    Publication series

    NameERCOFTAC Series
    ISSN (Print)1382-4309


    Workshop7th ERCOFTAC Workshop on Direct and Large-Eddy Simulation VII, DLES 2008
    Abbreviated titleDLES


    • IR-75959
    • EWI-19312
    • METIS-276292

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