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  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  (see Figs. 1–6) for a bubbly jet with 1 mm diameter bubbles. Good agreement is obtained using the model of Brucato et al.  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
The Modeling of Lift and Dispersion Forces in Two-Fluid Model Simulations of a Bubbly Jet
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.
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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