Search for: [Abstract = "In this work, a numerical study of a sharply expanding highly swirling flow is carried out using v2\-f models based on the Comsol Multiphysics 5.6 software package and a two\-fluid turbulence model. The results obtained are compared with known experimental data with different pipe diameters. The purpose of this work is to test the ability of models to describe anisotropic turbulence. It is shown that the two\-fluid model is more suitable for studying such flows."]