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

This work is dedicated to simulating polydispersed bubble turbulent flows. The work is aimed at development of an approach to simulating polydispersed bubble flows on the basis of the combination of a diffusion-inertia model with the delta-approximation method. The coagulation and fragmentation models of bubbles have been checked. The comparison of the simulation result with the experimental data has shown that the elaborated approach makes it possible to simulate the bubble polydispersed flows in wide range of gas content values.