International Conference of Physicists.SPb, October 20-24, 2025, Saint Petersburg
Aero and hydrodynamics

On the applicability of the monodisperse medium model in numerical studies of flows in bubble columns

A. S. Chernyshev, A. A. Shmidt

Ioffe Institute, St. Petersburg

Abstract: A comparison of the results of a numerical study of flow in a bubble column using monodisperse and polydisperse approaches was conducted. It was found from the differences of the obtained solutions that, as bubble sizes increase to $R_b>$ 1 mm (corresponding to a Reynolds number for a bubble Re$_b>$ 400), both models are equivalent. It can be explained by a modification of the flow pattern associated with a change in the nature of the force interaction between the phases. Thus, efficient monodisperse medium models can be used to study flows with large bubbles.

Keywords: multiphase flows, polydispersity, numerical modeling.

Received: 01.05.2025
Revised: 12.08.2025
Accepted: 17.08.2025

DOI: 10.61011/JTF.2025.12.61803.225-25

Bibliographic databases:

•