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A Three-Dimensional Model of Turbulent Core Annular Flow Regime

Author

Listed:
  • Saliha Nouri
  • Zouhaier Hafsia
  • Salah Mahmoud Boulaaras
  • Ali Allahem
  • Salem Alkhalaf
  • Baowei Feng
  • Heng Liu

Abstract

In this study, three-dimensional (3D) turbulent core annular flow (CAF) regime is investigated numerically. The proposed model is based on the 3D Reynolds average Navier–Stokes (RANS) equations combined with a pure convective transport equation of the volume of fluid (VOF) to predict the interface between the oil and water phases. The k-ω turbulence model is adopted to better reproduce the oil and water flow characteristics. The two-phase (CAF) regime can be predicted by two inlet configurations: the T-junction (3D-T) and the straight pipe (3D-S). These two configurations are simulated and compared for pipe diameter D=0.026  m and pipe length L=4  m. For these two inlet configurations, the computed mixture velocity profile and the water volume fraction at a test section z=100 D were compared to experimental measurements. The 3D-T configuration gives more appropriate results. The 3D-S slightly overestimates the maximum velocity at the test section and the lower and upper water layer of the (CAF) flow is shifted in the upward direction. For the 3D-T, the relative error in the pressure drop is 3.3%. However, for the 3D-S, this error is 13.0%.

Suggested Citation

  • Saliha Nouri & Zouhaier Hafsia & Salah Mahmoud Boulaaras & Ali Allahem & Salem Alkhalaf & Baowei Feng & Heng Liu, 2021. "A Three-Dimensional Model of Turbulent Core Annular Flow Regime," Journal of Mathematics, Hindawi, vol. 2021, pages 1-8, October.
    • Handle: RePEc:hin:jjmath:5296700
    DOI: 10.1155/2021/5296700
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