Dynamic self-organization in particle-laden turbulent channel flow

Bernardus J. Geurts, A.W. Vreman

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    Abstract

    We study fundamental aspects of turbulent riser-flow which contains large numbers of interacting particles. We include particle-particle as well as particle-fluid interactions. These interactions and the flow-forcing are the source for the dynamic formation and destruction of large-scale coherent particle swarms in the flow. We establish the basic scenario of this self-organization and investigate the dominant aspects of the resulting turbulence modulation. Large-eddy simulations with different subgrid models, and large numbers of particles at a significant volume fraction and realistic mass load ratio, indicate the development of a thinner boundary layer and an accumulation of particles near the walls. At an average volume fraction of ≈ 1.5% it was found that neglecting particleparticle interactions leads to an unphysical modulated flow.
    Original languageUndefined
    Title of host publicationEngineering Turbulence Modelling and Experiments 6
    EditorsW. Rodi, M. Mulas
    PublisherElsevier
    Pages979-989
    ISBN (Print)0-08-044544-6
    DOIs
    Publication statusPublished - 23 May 2005

    Publication series

    Name
    PublisherElsevier

    Keywords

    • METIS-224121
    • Turbulence modulation
    • Four-way coupling
    • Turbulence
    • Inelastic collisions
    • Coherent structures
    • IR-77648
    • Particle laden flow
    • Channel flow
    • Large eddy simulation

    Cite this

    Geurts, B. J., & Vreman, A. W. (2005). Dynamic self-organization in particle-laden turbulent channel flow. In W. Rodi, & M. Mulas (Eds.), Engineering Turbulence Modelling and Experiments 6 (pp. 979-989). Elsevier. https://doi.org/10.1016/B978-008044544-1/50094-7