Numerical and experimental investigations of mixing in T-shaped and cross-shaped micromixers |
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Authors: | Nassim Ait Mouheb Daniéll Malsch Agnès Montillet Camille Solliec Thomas Henkel |
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Affiliation: | 1. Laboratoire de Génie des procédés, environnement et agro-alimentaire, Ecole des Mines de Nantes, France;2. Laboratoire de Génie des procédés, environnement et agro-alimentaire, C.R.T.T, Saint-Nazaire, France;3. Institut für Photonische Technologien, Jena, Germany |
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Abstract: | Mass transfer within the T-shaped and cross-shaped micromixers has been studied using CFD and confocal laser scanning microscopy methods. The concentration profiles, based on flow regimes, were used to compare the T- and cross-geometries. The cross-shaped micromixer tends to intensify the mixing and this is occurring for lower flow rates in comparison to the T shape. The improvement made by the cross geometry is attributed to the stronger vortex stretching and high shear rate, which reduces the liquid transfer length. The presence of a single outlet in the T-shaped micromixer induces a smaller degree of freedom for the fluid. A higher pressure drop is calculated in T-shaped micromixer than in cross-shaped micromixer. |
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