Development of a k-ε Model for Bubbly Two-Phase Flow

[+] Author and Article Information
M. Lopez de Bertodano, R. T. Lahey, O. C. Jones

Center for Multiphase Research, Rensselaer Polytechnic Institute, Troy, NY 12180-3590

J. Fluids Eng 116(1), 128-134 (Mar 01, 1994) (7 pages) doi:10.1115/1.2910220 History: Received August 10, 1992; Revised May 13, 1993; Online May 23, 2008


An extension of the k-ε model for bubbly two-phase flow is proposed and tested against experimental data. The basic assumption made is that the shear-induced turbulence and bubble-induced turbulence may be linearly superposed. This assumption results in a model with two time constants that matches both homogeneous two-phase turbulence data (Lance and Bataille, 1991) and pipe data (Serizawa, 1986). The coefficients of the single-phase k-ε model have not been modified and only one additional coefficient is required: the virtual volume coefficient of the bubbles, which may be determined from first principles. This model not only agrees with the data trends, but it also predicts the turbulence suppression which has been measured for high Reynolds number bubbly air/water flows in pipes.

Copyright © 1994 by The American Society of Mechanical Engineers
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