Abstract
Dynamics of a disperse phase in a swirling two-phase flow behind a sudden tube expansion is simulated with the aid of Eulerian and full Lagrangian descriptions. The carrier phase is described by three-dimensional Reynolds averaged Navier–Stokes equations with consideration of inverse influence of particles on the transport processes in gas. The velocity profiles calculated using these two approaches are practically the same. It is shown that the main difference between the Eulerian and Lagrangian approaches is presented by the concentration profile of the dispersed phase. The Eulerian approach underpredicts the value of particle concentration as compared with the Lagrangian approach (the difference reaches 15−20 %). The dispersed phase concentration predicted by the Lagrangian approach agrees with the measurement data somewhat better than the data obtained through the Eulerian approach.
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The work was financially supported by the grant of Russian Science Foundation (Project No. 14-19-00402).
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Pakhomov, M.A., Terekhov, V.I. Solid particle spreading in gas-dispersed confined swirling flow. Eulerian and Lagrangian approaches. Thermophys. Aeromech. 24, 325–338 (2017). https://doi.org/10.1134/S0869864317030015
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DOI: https://doi.org/10.1134/S0869864317030015