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.
Comparative Analysis of Passive Micromixers at a Wide Range of Reynolds Numbers / Viktorov, Vladimir; Mahmud, Md Readul; Visconte, Carmen. - In: MICROMACHINES. - ISSN 2072-666X. - ELETTRONICO. - 6(2015), pp. 1166-1179. [10.3390/mi6081166]
|Titolo:||Comparative Analysis of Passive Micromixers at a Wide Range of Reynolds Numbers|
|Data di pubblicazione:||2015|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.3390/mi6081166|
|Appare nelle tipologie:||1.1 Articolo in rivista|