A review of publications on gas-liquid devices with a foam regime, published since 2000, generalizations of the main directions of interest to researchers and the results achieved. The main method for studying the foam layer has become computational fluid dynamics, however, the most common models are based on empirical equations for cross-flow trays with round holes. Apparatus with a movable nozzle and centrifugal foam apparatus - two areas of particular interest in the Russian Federation, but did not gain popularity in the world. The research uses new measuring methods: gamma scanning, Doppler interferometry and digital processing of high-speed photographs, spatial probes to determine the structure of the foam layer on industrial-scale trays.

Computational fluid dynamics has become one of the main methods for research anddesign ofsieve trays, however, the most common models, Euler-Euler phases, turbulence RANS, are based on empirical correlations for cross-flow trays with round holes. Our goal was CFD modeling of sieve tray witha countercurrent flows in the OpenFOAM program, a multiphase VOF model, and a kOmegaSSTDES turbulence model. The model can be used to simulate a low-intensity mixture mode of sieve tray, for example, for a water-air system, the superfical gas velocityis no more than 0.5 m/s.