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Article Dans Une Revue Chemical Engineering and Technology Année : 2019

Effect of Reynolds Number on Laminar Mixing in an Annular Tube Combining Two Crossed Secondary Flows

Résumé

To improve static and continuous mixers, several methods have been proposed inthe literature. Herein, two well-known passive intensification configurations wereapplied to an annular laminar flow and numerically studied. Residence time distributions(RTDs) and Poincare´ sections were examined to investigate the dispersionof the particles. These two approaches show that geometric perturbations ofthe walls improve the mixing level for all Reynolds numbers investigated. AboveRe = 300, the increase in mixing can be attributed to chaotic advection within theflow. Finally, a general reactor model that allows the RTD in the annular tube tobe predicted with high confidence is proposed.

Dates et versions

hal-02538912 , version 1 (09-04-2020)

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Pascale Bouvier, Christophe Andre, Serge Russeil. Effect of Reynolds Number on Laminar Mixing in an Annular Tube Combining Two Crossed Secondary Flows. Chemical Engineering and Technology, 2019, 42 (1), pp.100-108. ⟨10.1002/ceat.201800134⟩. ⟨hal-02538912⟩
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