A mathematical model of liquid mixing in an apparatus with annular cross section by gas bubbling

A mathematical model was suggested for calculating the mixing process performed by gas bubbling. The adequacy of the model for an apparatus of annular cross section with gas feeding through a nozzle of small diameter was confirmed experimentally. The parameters of the model in relation to the flow rate of the gas fed for mixing were determined. The suggested approaches associated with mixing intensification can find use in spent nuclear fuel reprocessing and in other processes occurring in gas–liquid and liquid–solid heterogeneous systems.