Applicability of the Momentum-Flux-Parameter Closure for the Two-Fluid Model to Slug Flow

摘要

This paper investigates the use of the momentum flux closure relationship, with the aim of obtaining a well-posed set of equations for the transient onedimensional two-fluid model in the slug flow regime. The inclusion of the momentum flux parameters for the gas and liquid phases takes into account the effect of velocity profiles in the one-dimensional areaaveraged equations. It is found that the new model is well-posed only for certain values of the coefficient. However, the values necessary to ensure well-posedness are much higher than is deemed to be physically plausible; also the slug flow properties predicted are at variance with experimental data.