Turbulent gas-dispersed flow in a pipe with sudden expansion: numerical simulation |
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Authors: | V I Terekhov M A Pakhomov |
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Institution: | (1) Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia |
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Abstract: | A mathematical model was developed to simulate two-phase gas-dispersed flow moving through a pipe with axisymmetric sudden
expansion. In the model, the two-fluid Euler approach was used. The model is based on solving Reynolds-averaged Navier — Stokes
equations for a two-phase stream. In calculating the fluctuating characteristics of the dispersed phase, equations borrowed
from the models by Simonin (1991), Zaichik et al. (1994), and Derevich (2002) were used. Results of a comparative analysis
with previously reported experimental and numerical data on two-phase flows with separation past sudden expansion in a plane
channel and in a pipe are given.
This work was supported by the President of the Russian Federation through the Foundation for Young Candidates of Sciences
under Grant MK-186.2007.8 and by the Russian Foundation for Basic Research (Grants Nos. 05-08-33586 and 06-08-00967). |
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Keywords: | gas-dispersed flow turbulent flow flow separation simulation |
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