Simulation of the Three-Dimensional Two-Phase Flow in Stirred Extraction Columns by Lagrangian-Eulerian Method

X. You and X. Xiao

Abstract
The two-phase flow field of agitated extraction columns is simulated with the help of computational fluid dynamics (CFD). In this paper, the continuous phase is described by Eulerian model and the dispersed phase (drops) is simulated by Lagrangian model. The interaction of rotor and baffle is considered by applying the multiple reference frame concepts. The distributions of the dispersed phase (drops) and the flow field of continuous phase can be obtained by the Lagrangian-Eulerian method described here. Numerical results show that the Lagrangian-Eulerian method can be adopted to evaluate the performance and optimize the design of extraction column.

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Keywords
Stirred extraction column, Lagrangian-Eulerian method, computational fluid dynamics, two-phase flow