Neutral and inertial particle acceleration in non isotropic turbulent flows

ORAL

Abstract

Turbulent fluctuations influence the dynamics of particulate matter by accelerating the dispersions and mixing of particles. In several natural and industrial flows turbulent fluctuations are strongly coupled to the presence of intense and anisotropic mean flows. The flows that we study here are homogeneous shear and homogeneous strain turbulence. In these flows the dispersion of particles is strongly influenced by gradients in the mean velocity. A comparison of single particle properties, such as acceleration and velocity variances, and time correlations are presented to illustrate the particle dynamics under such conditions.

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Authors

  • Armann Gylfason

    • School of Science and Engineering, Reykjavik University
    • Reykjavik University

  • Michel van Hinsberg

    • Eindhoven University of Technology

  • Chung-Min Lee

    • California State University - Long Beach

  • Federico Toschi

    • Fluid Dynamics Laboratory, Department of Physics and Eindhoven University of Technology, The Netherlands
    • Eindhoven University of Technology
    • Technische Universiteit Eindhoven