Inter-particle collision in particle-laden isotropic turbulence

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Abstract

Direct numerical simulations of heavy particles in isotropic homogeneous turbulence are performed to study inter-particle collisions in a wide range of Stokes numbers. Dynamics of the particles are described by Stokes drag including particle-particle interactions via hard-sphere collisions while fluid turbulence is solved using a pseudo-spectral method. The statistics related to rotation and dissipation rates as well as collision frequency are investigated. A particular emphasis is placed on the statistics of the fluid experienced by heavy particles, which provide essential information on the collision process. A plausible explanation of the collision mechanism for various Stokes numbers is provided.

Original languageEnglish
Article number052012
JournalJournal of Physics: Conference Series
Volume318
Issue numberSECTION 5
DOIs
Publication statusPublished - 2011 Jan 1
Event13th European Turbulence Conference, ETC13 - Warsaw, Poland
Duration: 2011 Sep 122011 Sep 15

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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