Comparative Analysis of Passive Micromixers at a Wide Range of Reynolds NumbersReportar como inadecuado




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Department of Mechanical and Aerospace Engineering DIMEAS, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Turin, Italy



These authors contributed equally to this work.





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Academic Editor: Yong Kweon Suh

Abstract Two novel passive micromixers, denoted as the Y-Y mixer and the H-C mixer, based on split-and-recombine SAR principle are studied both experimentally and numerically over Reynolds numbers ranging from 1 to 100. An image analysis technique was used to evaluate mixture homogeneity at four target areas. Numerical simulations were found to be a useful support for the design phase, since a general idea of mixing of fluids can be inferred from the segregation or the distribution of path lines. Comparison with a well-known mixer, the Tear-drop one, was also performed. Over the examined range of Reynolds numbers 1 ≤ Re ≤ 100, the Y-Y and H-C mixers showed at their exit an almost flat mixing index characteristic, with a mixing efficiency higher than 90%; conversely the Tear-drop mixer showed a relevant decrease of efficiency at mid-range. Furthermore, the Y-Y and the H-C showed significantly less pressure drop than the Tear-drop mixer. View Full-Text

Keywords: micromixer; numerical simulation; split-and-recombine principle; mixing efficiency micromixer; numerical simulation; split-and-recombine principle; mixing efficiency





Autor: Vladimir Viktorov †, Md Readul Mahmud † and Carmen Visconte †,*

Fuente: http://mdpi.com/



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