A Numerical study of Two-Phase flow through a Rectangular Duct with a Convergence Ribs

  • Authors

    • Riyadh. S.Al-Turaihi
    • Abbas Sahi Shareef
    • Ali Abdalaimma
    2018-11-27
    https://doi.org/10.14419/ijet.v7i4.19.28078
  • Simulation of two-phase flow, Convergence ribs rectangular duct, Convergenceangle, pressure drop.
  • Two-phase flow in ribbed convergent rectangular upward vertical duct was studied.Water and air were usedas materials for two-phase. Numerical studies have been performed to test the influence of increased air and water discharges on the pressure profile and pressure drop through the convergent section, as the effect of increasing the convergent angle on the pressure difference across the convergent section was studied.

    Water inlet discharges used were between (5-20 L/min), and air discharges were between (5.833-16.666 L/min). Two test channels with convergent angles (10 and 15 degrees) were used.

    Computational fluid dynamics for a three-dimensional model was simulated with ANSYS fluent 18 depending on the boundary condition and governed by equations of Eulerian multiphase flow model.

    The results indicated that the pressure along the test channel raises as water and air discharge rise. It was observedtoo the pressure drop increases with the increase of the convergence angle.

     

     

  • References

    1. [1] A. J. Ghajar, “Non-boiling heat transfer in gas-liquid flow in pipes: a tutorial,†J. Brazilian Soc. Mech. Sci. Eng, vol. 27, pp. 46–73, 2005.

      [2] V. G. Kourakos, P. Rambaud, S. Chabane, D. Pierrat, and J. M. Buchlin, “Two-phase flow modeling within expansion and contraction singularities,†vol. 63, pp. 27–43, 2009.

      [3] A. Behzadi, R. I. Issa, and H. Rusche, “Modelling of dispersed bubble and droplet flow at high phase fractions,†Chem. Eng. Sci., vol. 59, pp. 759–770, 2004.

      [4] L. Cheng, G. Ribatski, and J. R. Thome, “Two-Phase Flow Patterns and Flow-Pattern Maps: Fundamentals and Applications,†Appl. Mech. Rev., vol. 61, pp. 50802, 2008.

      [5] S. Zhu, H. Blackburn, and B. Anderson, “Numerical simulations of bubble dispersion over a hydrofoil,†7th Int. Conf. CFD Miner. Process Ind., pp. 1–6, 2009.

      [6] Roul, M. K., Dash, S. K., “Two-phase pressure drop caused by sudden flow area contraction/expansion in small circular pipesâ€, Int. J. Num. Methods Fluids. vol. 66, pp.1420-1446, 2011.

      [7] I. M. Sakr, A. Balabel, K. Ibrahim, and S. El-kom, “Computations of Upward Water / Air Fluid Flow in,†vol. 4, , pp. 193–213, 2013.

      [8] N. Eskin and E. Deniz, “Pressure Drop of Two-Phase Flow through Horizontal Channel with Smooth Expansionâ€, Int. Refridgeration Air-Conditioning Conf., pp. 1–10, 2012.

      [9] Ueda, Y., Nakajima, T., Ishii, T., Tsujino, R., Iguchi,M., “Numerical simulation of gas liquid two- phase flow in a horizontally placed hydrophobic rectangular channelâ€, High Temperature Material Proc, vol.31, pp.405-410, 2012.

      [10] V. Kumar, “NUMERICAL STUDY OF OIL-WATER TWO PHASE FLOW IN HORIZONTAL & INCLINED TUBES,â€, 2014.

      [11] A. Ahmadpour, S. M. A. Noori Rahim Abadi, and R. Kouhikamali, “Numerical simulation of two-phase gas-liquid flow through gradual expansions/contractions,†Int. J. Multiph. Flow, vol. 79, pp. 31–49, 2016.

      [12] Fluent User’s Guide (2006). Modeling Multiphase Flow, Fluent Inc.

  • Downloads

  • How to Cite

    S.Al-Turaihi, R., Sahi Shareef, A., & Abdalaimma, A. (2018). A Numerical study of Two-Phase flow through a Rectangular Duct with a Convergence Ribs. International Journal of Engineering & Technology, 7(4.19), 969-974. https://doi.org/10.14419/ijet.v7i4.19.28078