Development of a diffusion-inertia model for calculating bubble turbulent flows: Isothermal monodispersed flow in a vertical pipe

A diffusion-inertia model (DIM) for calculating of the monodispersed bubble flows in an isothermal flow in a turbulent liquid has been presented. The comparison of the results of the simulation with various experimental data shows that the DIM adequately describes the variety of physical phenomena occurring in bubble flows. The DIM has been incorporated in a three-dimensional computing code that allows one to use this model for engineering calculations.