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Published in:
2022 | OriginalPaper | Chapter
Numerical Investigations of Mixing Performance in Split and Recombine Micromixer
Authors : Ekta Tripathi, Promod Kumar Patowari, Sukumar Pati
Published in: Recent Advances in Manufacturing Modelling and Optimization
Publisher: Springer Nature Singapore
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Abstract
The micromixers are one of the significant elements in microfluidic applications, especially in lab-on-chip devices. In this paper, four split and recombine type micromixers are designed by altering the shape of the wall boundaries and inside grooves. The pressure drop and mixing of fluids in each micromixer are numerically analyzed, and results are compared for Reynolds number from 0.1 to 1. The mixing index is the maximum at Re = 0.1, and the value is almost the same for all the geometry. Results reveal that with the increase in Re, the mixing index decreases, and the pressure drop increases in each micromixer. Although micromixer with square inner grooves and triangular outer wall boundaries (SiTo) provides the best mixing, the associated pressure drop is also the highest. Thus, TiTo (micromixer with triangular inner and outer grooves) is recommended for mixing purposes. It provides second-highest mixing with comparatively lowest pressure drop than SiTo irrespective of the Reynolds number.