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Journal of Engineering Thermophysics

, Volume 18, Issue 1, pp 39–48 | Cite as

Development of the diffusion-inertia model of particle deposition in turbulent flows

  • A. G. Demenkov
  • B. B. Ilyushin
  • D. Ph. Sikovsky
  • V. F. Strizhov
  • L. I. Zaichik
Article

Abstract

There is presented a modification of the diffusion-inertia model that describes the distribution and deposition of low-inertia particles in turbulent near-wall flows. For the transport equation of the dispersed phase concentration, there is proposed a new wall function that takes into account the nonequilibrium effects and nonlocality of the turbulent transport of the dispersed phase in the near-wall zone caused by the particles’ inertia. This allowed widening the applicability limits of the diffusion-inertia model even for particles with a relaxation time with a magnitude of several hundred. The calculation results for the rate of the particles’ deposition from the turbulent flow to the walls in a round pipe are in good accord with the literature experimental data and the data of direct numerical simulation.

Keywords

Turbulence Kinetic Energy Direct Numerical Simulation Wall Function Turbulent Transport Viscous Sublayer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Pleiades Publishing, Ltd. 2009

Authors and Affiliations

  • A. G. Demenkov
    • 1
    • 2
  • B. B. Ilyushin
    • 1
    • 2
    • 3
  • D. Ph. Sikovsky
    • 1
    • 2
    • 3
  • V. F. Strizhov
    • 1
  • L. I. Zaichik
    • 1
  1. 1.Nuclear Safety InstituteRussian Academy of SciencesMoscowRussia
  2. 2.Institute of Thermophysics, Siberian BranchRussian Academy of SciencesNovosibirskRussia
  3. 3.Novosibirsk State UniversityNovosibirskRussia

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