Simulation of flow in a pulsed-jet mixer using a volume of fluid model

D. Eldin, S. Parks, C. Petty, A. Bénard

    Research output: Contribution to journalArticle

    Abstract

    Pulsed-jet mixers (PJM) are often used to suspend a solid phase in a liquid phase within very large tanks. In this study, a commercial CFD code (Fluent 6.0) is used to simulate the axisymmetric flow field induced by a PJM symmetrically situated in a cylindrical tank. The simulation uses a volume-of-fluid model for an air/water system with a standard k-ε model for the Reynolds stress. A large-scale periodic recirculation zone is established within the tank and provides a means to suspend solid particles. Particle trajectory calculations are used to identify potential regions of high wear on the bottom of the tank and within the jet nozzle. The simulation supports the conclusion that a PJM should be able to suspend 100-micron diameter particles with a density three times larger than water. However, under the same operating conditions, 500-micron diameter particles with densities equal to or larger than 3000 kg/m 3 will settle to the bottom of the tank.

    Original languageEnglish (US)
    Pages (from-to)297-306
    Number of pages10
    JournalAdvances in Fluid Mechanics
    Volume40
    StatePublished - 2004

    Profile

    simulation
    fluids
    water
    Fluids
    Water
    cylindrical tanks
    jet nozzles
    axisymmetric flow
    particle trajectories
    Reynolds stress
    charge flow devices
    solid phases
    flow distribution
    liquid phases
    air
    Nozzles
    Flow fields
    Computational fluid dynamics
    Trajectories
    Liquids

    Keywords

    • Discrete phase model
    • Mixing
    • Pulsed-jet mixer
    • Solid/liquid suspension
    • Volume-of-fluid model

    ASJC Scopus subject areas

    • Energy Engineering and Power Technology
    • Mechanical Engineering
    • Condensed Matter Physics

    Cite this

    Simulation of flow in a pulsed-jet mixer using a volume of fluid model. / Eldin, D.; Parks, S.; Petty, C.; Bénard, A.

    In: Advances in Fluid Mechanics, Vol. 40, 2004, p. 297-306.

    Research output: Contribution to journalArticle

    Eldin, D.; Parks, S.; Petty, C.; Bénard, A. / Simulation of flow in a pulsed-jet mixer using a volume of fluid model.

    In: Advances in Fluid Mechanics, Vol. 40, 2004, p. 297-306.

    Research output: Contribution to journalArticle

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