One-dimensional drift-flux model and constitutive equations for relative motion between phases in various two-phase flow regimes. (English) Zbl 1052.76070

Int. J. Heat Mass Transfer 46, No. 25, 4935-4948 (2003); erratum ibid. 48, No. 6, 1222-1223 (2005).
Summary: In view of practical importance of drift-flux model for two-phase flow analysis in general, and for the analysis of nuclear-reactor transients and accidents in particular, we study the kinematic constitutive equation for drift velocity for various two-phase flow regimes. The constitutive equations that specify the relative motion between phases in the drift-flux model has been derived by taking into account the interfacial geometry, body-force field, shear stresses, interfacial momentum transfer and wall friction, since these macroscopic effects govern the relative velocity between phases. A comparison of the models with existing experimental data shows a satisfactory agreement.


76T10 Liquid-gas two-phase flows, bubbly flows
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