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- W2000344766 abstract "Particle resuspension in a turbulent, square duct flow is studied using large eddy simulation combined with Lagrangian particle tracking under conditions of one-way coupling, with the particle equation of motion solved with the Stokes drag, lift, buoyancy, and gravitational force terms. Here, resuspension is taken to mean the movement of particles in close proximity to the duct walls back in to the mainstream of the flow. The flow considered has a bulk Re=250 k, with four particle sizes ranging from 5 to 500 μm examined. The results demonstrate that turbulence-driven secondary flows within the duct play an important role in the resuspension process. In the vertical direction, resuspension is promoted by the drag force arising from the secondary flows, which is balanced by the gravitational force, with this effect increasing with decreasing particle size. In the horizontal direction, particle resuspension is promoted by the particle’s inertial force, with this effect increasing with increasing particle size. For resuspension in both directions, the drag force dominates small particle resuspension, while for large particles the lift force is also a contributing factor. In the horizontal direction, the effect of the lift force varies with the direction of the secondary flow and becomes more significant when a particle is large or close to the duct wall. The influence of the lift force is also larger in the vertical than in the horizontal direction due to the effects of gravity." @default.
- W2000344766 created "2016-06-24" @default.
- W2000344766 creator A5040469723 @default.
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- W2000344766 date "2010-03-01" @default.
- W2000344766 modified "2023-10-03" @default.
- W2000344766 title "Inertial particle resuspension in a turbulent, square duct flow" @default.
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- W2000344766 doi "https://doi.org/10.1063/1.3336013" @default.
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