A two-equation turbulence model for two-phase flows

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  • S. E. Elghobashi
    Department of Mechanical Engineering, University of California, Irvine, California 92717
  • T. W. Abou-Arab
    Department of Mechanical Engineering, University of California, Irvine, California 92717

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<jats:p>A two-equation turbulence model has been developed for predicting two-phase flows. The two equations describe the conservation of turbulence kinetic energy and dissipation rate of that energy for the carrier fluid in a two-phase flow. They have been derived rigorously from the momentum equations of the carrier fluid. Closure of the time-mean equations is achieved by modeling the turbulent correlations up to third order. The new model eliminates the need to simulate in an ad hoc manner the effects of the dispersed phase on turbulence structure. Preliminary testing indicates that the model is successful in predicting the main features of a round gaseous jet laden with uniform-size solid particles.</jats:p>

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