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International Journal of Fluid Mechanics Research
ESCI SJR: 0.206 SNIP: 0.446 CiteScore™: 0.5

ISSN Imprimer: 2152-5102
ISSN En ligne: 2152-5110

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International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.v40.i3.10
pages 185-203

A Two Time Scales Turbulence Model of Turbulent Bubbly Flows

Dhahri Maher
Department of Civil Engeneering, National Engeneering School of Tunis, Universty of Tunis Elmanar Tunisia, Tunis
Bellakhel Ghazi
Department of Civil Engeneering, National Engeneering School of Tunis, Universty of Tunis Elmanar Tunisia, Tunis
Chahed Jamel
Department of Civil Engeneering, National Engeneering School of Tunis, Universty of Tunis Elmanar Tunisia, Tunis

RÉSUMÉ

We propose a model including three equations with two time scales for bubble turbulent homo-geneous deduced by reduction of second order closures in an industrial CFD code (PHOENICS 3.5.1). The viscosity turbulence formulation introduced by this model releases a compromise between the description level of the turbulence structure for multiphase flows and the easiness of the model use in many flow cases. The Virtual Reality option of PHOENICS 3.5.1 was used for pre- and post-processing. Model predictions were compared to other flows to prove the univer-sality of the model. This model not only agrees with the data trends, but also predicts the turbulence suppression, which has been measured for high Reynolds number bubbly air/water flows in pipes.


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