Micromixers physical methods

Experimental characterization of the mixing quaUty in conventional stirred tank reactors, as well as in micromixers, is an important step for the proper comprehension of the performance of chemical reactors. To identify interactions between mixing and chemical reactions and quantify them, a variety of physical and chemical methods have been developed, whose application to a given mixer may either be easy or may require appropriate adaptations to obtain valuable measurements. The next section gives a brief overview of existing methods. 

Flow models presented in Sec. 2.4 may be used for predicting chemical conversion. Elementary patterns involved in the model are generally assumed to behave as ideal well micromixed reactors. Mixing earliness is implicitly accounted for by the arrangement of these elementary zones with respect to each other and the internal streams connecting them. This method is very popular and is successful for representing and scaling up chemical reactors provided the model has a sound physical basis. 

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