Characterization of enhanced liquid mixing in T‐T mixer at various Reynolds numbers

Passive mixers of planar geometry are most preferred for micro total analysis systems (μTAS) due to their low cost, ease of integration, and robustness. They are also widely employed chemical processing field as they incur very low processing costs. A simple passive T‐mixer has been studied by many...

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Bibliographic Details
Published in:Asia-Pacific journal of chemical engineering 2019-03, Vol.14 (2), p.n/a
Main Authors: Dundi, Manoj, V.R.K, Raju, V.P, Chandramohan
Format: Article
Language:English
Subjects:
CFD‐simulation
dissimilar velocities
micromixers
T‐mixer
T‐T‐mixer
vortex flow
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Summary:Passive mixers of planar geometry are most preferred for micro total analysis systems (μTAS) due to their low cost, ease of integration, and robustness. They are also widely employed chemical processing field as they incur very low processing costs. A simple passive T‐mixer has been studied by many authors and used for various applications poor mixing at low Re (Re  400) (pulsating vortex regime) is its main disadvantage respectively. This limitation is shown to be overcome here by employing a simple design called T‐T mixer. The results show significant increase of mixing quality with T‐T mixer at low Re (Re  400) (overlapping of vortices). This remarkable improvement with T‐T mixer is obtained at the expense of very small rise in pressure drop compared with T‐mixer. The gap between two Ts of T‐T mixer is optimized, and found that lower gap (5 to 20 μm) T‐T mixer is more preferable. The effect of dissimilar inlet velocitieshas also been studied. Present study characterizes the flow and mixing behavior of optimized T‐T mixer in the Re range of 0 to 750.
ISSN:1932-2135
1932-2143
DOI:10.1002/apj.2298