CFD applied to turbulent flows in concentric and eccentric annuli with inner shaft rotation

Authors

  • J. L. Vieira Neto,

    1. Federal University of Uberlândia, School of Chemical Engineering, Building 1K, Campus Santa Mônica, POB 593, 38400-902 Uberlândia, MG, Brazil
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  • A. L. Martins,

    1. PETROBRAS R&D Center, Well Technology Sector, 21949-900 Rio de Janeiro, RJ, Brazil
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  • A. Silveira Neto,

    1. Federal University of Uberlândia, School of Mechanical Engineering, Building 1M, Campus Santa Mônica, 38400-902 Uberlândia, MG, Brazil
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  • C. H. Ataíde,

    1. Federal University of Uberlândia, School of Chemical Engineering, Building 1K, Campus Santa Mônica, POB 593, 38400-902 Uberlândia, MG, Brazil
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  • M. A. S. Barrozo

    Corresponding author
    1. Federal University of Uberlândia, School of Chemical Engineering, Building 1K, Campus Santa Mônica, POB 593, 38400-902 Uberlândia, MG, Brazil
    • Federal University of Uberlândia, School of Chemical Engineering, Building 1K, Campus Santa Mônica, POB 593, 38400-902 Uberlândia, MG, Brazil.
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Abstract

Turbulent flows in concentric and eccentric annuli with and without rotating inner cylinder were investigated by numerical simulations. Similar flows occur in drilling operations of oil wells. Several turbulence models with Reynolds Average Navier–Stokes approach were used in the simulations and the respective models predictions were compared with experimental data from the literature. The simulated results of axial and tangential velocities show a good agreement with the experimental data. As compared with another turbulence models, the simulations with the standard Reynolds Stress model presented a slightly better prediction for most of the responses studied.

Abstract

On a analysé des turbulences en espaces annulaires concentriques et excentriques avec ou sans cylindre interne tournant à l'aide de simulations numériques. Des écoulements semblables se produisent lors d'activités de forage de puits de pétrole. Plusieurs modèles de turbulence avec l'approche de Navier–Stokes en moyenne de Reynolds ont été utilisés dans les simulations et les prédictions respectives des modèles ont été comparées aux données expérimentales de la littérature. Les résultats simulés des vélocités axiales et tangentielles cadrent bien avec les données expérimentales. Comparativement à d'autres modèles de turbulence, les simulations avec le modèle de tension de Reynolds standard ont présenté une prédiction légèrement supérieure pour la plupart des réponses étudiées.

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