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This paper presents the results of the experimental investigations of hydrodynamics for an external-loop air-lift column. Process characteristics (gas hold-up, liquid velocities, liquid circulation time and mixing time) were analyzed as a function of the modified Froude number. The obtained results were presented graphically and in the form of the quantitative correlations.
In this study the results of numerical simulations of hydrodynamics in an agitated vessel with eccentrically located impeller (HE3 or propeller) are presented. Mathematical model of the velocity field is based on Navier-Stocks equation. Characteristics of turbulent flow of liquid is described with the use of CFD methods. In this work the Scale Adaptive Simulation approach coupled with Sliding Mesh...
In the paper, critical impeller speeds were analyzed on the basis of the performed simulations of the concentration distribution of the floating particles suspension in an agitated vessel, equipped with pitched blade turbine. The required range of the standard deviation of the local particles concentration in a suspension was assumed as comparative criterion. The results obtained from numerical computations...
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