Collect. Czech. Chem. Commun. 1985, 50, 2396-2410

Simple explicit model of liquid mean flow in region above axial impeller

Miloslav Hošťáleka and Ivan Fořtb

a Institute of Inorganic Chemistry, 400 60 Ústí nad Labem
b Prague Institute of Chemical Technology, 166 28 Prague 6


The study describes a method of modelling axial-radial circulation in a tank with an axial impeller and radial baffles. The proposed model is based on the analytical solution of the equation for vortex transport in the mean flow of turbulent liquid. The obtained vortex flow model is tested by the results of experiments carried out in a tank of diameter 1 m and with the bottom in the shape of truncated cone as well as by the data published for the vessel of diameter 0.29 m with flat bottom. Though the model equations are expressed in a simple form, good qualitative and even quantitative agreement of the model with reality is stated. Apart from its simplicity, the model has other advantages: minimum number of experimental data necessary for the completion of boundary conditions and integral nature of these data.