Two-fluid model simulations of a bubbly vertical jet are presented. The purpose of these simulations is to assess the modeling of lift and turbulent dispersion forces in a free shear flow. The turbulent dispersion models used herein are based on the application of a kinetic transport equation, similar to Boltzmann’s equation, to obtain the turbulent diffusion force for the dispersed phase [1–4]. They have already been constituted and validated for the case of particles in homogeneous turbulence and jets [5] and for microscopic bubbles in grid generated turbulence and mixing layers [6,7]. It was found that it is possible to simulate the experimental data of Sun [8] (see Figs. 1–6) for a bubbly jet with 1 mm diameter bubbles. Good agreement is obtained using the model of Brucato et al. [9] for the modulation of the drag force by the liquid phase turbulence and a constant lift coefficient, However, little sensitivity is observed to the value of the lift coefficient in the range
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July 2004
Technical Papers
The Modeling of Lift and Dispersion Forces in Two-Fluid Model Simulations of a Bubbly Jet
M. Lopez de Bertodano,
M. Lopez de Bertodano
Nuclear Engineering Department, Purdue University, West Lafayette, IN 47907-2017, USA
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F. J. Moraga,
F. J. Moraga
Center for Multiphase Research, Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USA
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D. A. Drew,
D. A. Drew
Center for Multiphase Research, Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USA
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R. T. Lahey,, Jr.
R. T. Lahey,, Jr.
Center for Multiphase Research, Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USA
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M. Lopez de Bertodano
Nuclear Engineering Department, Purdue University, West Lafayette, IN 47907-2017, USA
F. J. Moraga
Center for Multiphase Research, Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USA
D. A. Drew
Center for Multiphase Research, Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USA
R. T. Lahey,, Jr.
Center for Multiphase Research, Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USA
Contributed by the Fluids Engineering Division for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received by the Fluids Engineering Division August 15, 2002; revised manuscript received July 16, 2003. Associate Editor: S. Balachandar.
J. Fluids Eng. Jul 2004, 126(4): 573-577 (5 pages)
Published Online: September 10, 2004
Article history
Received:
August 15, 2002
Revised:
July 16, 2003
Online:
September 10, 2004
Citation
Lopez de Bertodano, M., Moraga , F. J., Drew , D. A., and Lahey, , R. T., Jr. (September 10, 2004). "The Modeling of Lift and Dispersion Forces in Two-Fluid Model Simulations of a Bubbly Jet ." ASME. J. Fluids Eng. July 2004; 126(4): 573–577. https://doi.org/10.1115/1.1777231
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