Journal
CHEMICAL ENGINEERING JOURNAL
Volume 185, Issue -, Pages 300-313Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2012.01.046
Keywords
Microreactors; Laminar mixing; Computational fluid dynamics; Symmetry breaking
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Funding
- MIUR (Italian Ministry of Education and Research) [2009-3JPM5Z]
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The effect of the inlet flow conditions on the degree of mixing in a T-shaped micro-mixer is investigated numerically. Specifically, it is observed that if the flows at the micro-mixer confluence are not fully developed, engulfment occurs at larger Reynolds number, with a different flow pattern and with much lower mixing efficiencies, compared with the case where the inlet flows are fully developed. Thus, for a given micro-mixer geometry, two different engulfment flows may be found as the Reynolds number is increased, corresponding to successive symmetry breaking processes. This work highlights also the importance of both a fine discretization of the micro-mixer as well as of suited convergence criteria for the setting of the numerical simulations. (c) 2012 Elsevier B.V. All rights reserved.
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