Abstract
For the investigation of chemical reactions in micro- and minichannels the threedimensional velocity field and three dimensional concentration field of an inert and reactive tracer was measured in a T-shaped micromixer. For this purpose a measurement method for micro particle image velocimetry and confocal laserscanning microscopy has been developed. By solving the continuity equation the calculation of three dimensional streamlines, residence time distribution and local energy dissipation is possible. It becomes out that a regime transition to engulfment flow occurs at a certain Reynolds number dependent on reactor dimensions that can be predicted by the modified model of Soleymani. This transition leads to a different efficiency of micromixing measurable by the reactionproduct of a fast chemical reaction by confocal laserscanning microscopy. The influence of the flow regime on the yield and selectivity has been investigated by means of a parallel consecutive reaction system.
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Hoffmann, M., Schlüter, M., Räbiger, N. (2010). Experimental Analysis and Modeling of Micromixing in Microreactors. In: Bockhorn, H., Mewes, D., Peukert, W., Warnecke, HJ. (eds) Micro and Macro Mixing. Heat and Mass Transfer. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-04549-3_16
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DOI: https://doi.org/10.1007/978-3-642-04549-3_16
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-04548-6
Online ISBN: 978-3-642-04549-3
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