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Article Dans Une Revue Chemical Engineering Research and Design Année : 2020

Liquid–solid two-phase jet in a turbulent crossflow: Experiments and simulations

Résumé

Compared to single-liquid and liquid–liquid jets in crossflow (JICF), liquid–solid two-phase JICF is rarely studied. An experimental setup has been developed to investigate a vertical jet of liquid–solid mixture in water turbulent crossflow at Re≈2.2·104 over 4 s period. Rigid micro particles were injected vertically in a horizontal pure-water turbulent flow. The jet trajectory, penetration and the particles concentration were recorded via a high resolution camera with particles tracking technique. Three-dimensional CFD simulations have been conducted using two different Eulerian models: two-Fluid model in commercial code, and a new mixture model solver developed in opensource to predict the hydrodynamics, jet trajectory and particles transport. A modified-k−ε model (for particle induced turbulence, and turbulent dispersion), and a modified-buoyant-k−ε model have been employed in the commercial and open-source codes, respectively. At t≤2.5 s near the jet's entry (x/h>0.2, y/h<0.15), both models predicted local ϕ values similar to the experiments. While at t=2.5 s, only the mixture model predicted the jet's bend with ϕ≈0 in the zone (x/h>0.2, y/h<0.15) as in the experiment. The mixture model constitutes a good compromise for conducting global predictions of suspension JICFs at a computational cost that is reduced by a factor of the order of O(∼10). © 2020 Institution of Chemical Engineers
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Dates et versions

hal-03224997 , version 1 (21-07-2022)

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Paternité - Pas d'utilisation commerciale

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Charlène Octau, Talib Dbouk, Michel Watremez, Damien Méresse, Marc Lippert, et al.. Liquid–solid two-phase jet in a turbulent crossflow: Experiments and simulations. Chemical Engineering Research and Design, 2020, 155, pp.156-171. ⟨10.1016/j.cherd.2020.01.004⟩. ⟨hal-03224997⟩
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