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Abstract
A two-dimensional model was developed to predict concentration profiles and degree of mixing resulting from diffusion across laminate fluid layers within a fractal-like merging flow network. Numerical results were compared with concentration profiles experimentally acquired using laser-induced fluorescence. Although the numerical model well predicts DoM for Reynolds number less than or equal to 5, for higher Reynolds numbers the three-dimensionality of the experimental flow yields a higher degree of mixing than predicted by the model. The degree of mixing was studied for various geometries, and a nondimensional design parameter was developed to find an optimum number of branching levels for a given channel depth, final width, and total length.