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DOI: 10.1615/ICHMT.2008.CHT.460
20 pages


A mathematical model was developed to calculate the two-phase gas-droplet flow through cylindrical pipe past a sudden pipe expansion using the two-fluid Eulerian approach. The model is based on solving a system of Reynolds-averaged Navier-Stokes equations for the two-phase flow. The fluctuating dispersed phase characteristics were calculated assuming models previously used by Simonin (1991), Zaichik et al. (1994), and Derevich (2002). The effect of mass concentration of liquid droplets and the effect of droplet size on the structure of the separation flow region and on the heat transfer in the flow were analyzed in detail. The results obtained are compared with previously reported experimental and numerical data for two-phase flows propagating in the downstream region of sudden channel expansion.

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