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Hydrodynamics and mixing in continuous oscillatory flow reactors—Part II: Characterisation methods

Mazubert, Alex and Fletcher, David and Poux, Martine and Aubin, Joelle Hydrodynamics and mixing in continuous oscillatory flow reactors—Part II: Characterisation methods. (2016) Chemical Engineering and Processing: Process Intensification, 102. 102-116. ISSN 0255-2701

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Official URL: https://doi.org/10.1016/j.cep.2016.01.009

Abstract

This work presents and exploits quantitative measures to better quantify the performance of oscillatory baffled reactors, being complementary to simple vector plots and shear strain rate fields. Novel performance criteria, including radial and axial fluid stretching and mixing, as well as the shear strain rate history of fluid elements have been developed and used to compare the performance of five different baffle designs, namely single orifice baffles, disc-and-donut baffles and three novel variations of helical blades. Analysis of residence time distributions has also been used to evaluate the geometries. The performance measures highlight that the disc-and-donut baffles can provide significant shear strain rates, which could be useful for multiphase applications, but also significant axial dispersion that is comparable with that for the single orifice baffles. The results also suggest that helical blade designs could be promising for decreasing axial dispersion, whilst maintaining significant levels of shear strain rate.

Item Type:Article
HAL Id:hal-01907317
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > University of Sydney (AUSTRALIA)
Laboratory name:
Statistics:download
Deposited By: Loetitia MOYA
Deposited On:22 Oct 2018 13:26

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