Hardt, Steffen ; Pennemann, H. ; Schönfeld, F. (2006)
Theoretical and experimental characterization of a low-Reynolds number split-and-recombine mixer.
In: Microfluidics and Nanofluidics, 2 (3)
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
A mixing device based on the split-and-recombine (SAR) principle is characterized using both theoretical and experimental methods. The theoretical model relies on solving a 1D diffusion equation in a frame of reference comoving with the flow, thus avoiding the usual numerical artefacts related to the prediction of high-Péclet number mixing. It accounts both for the hydrodynamic focusing of the flow inside the mixing channel and the nontrivial flow topology. The experimental technique used for quantifying the degree of mixing utilizes two initially transparent salt solutions that form a colored compound in a fast chemical reaction. The degree of mixing is derived from the average color saturation found at specific positions along the mixing channel. The data obtained from the theoretical model are in reasonable agreement with the experiments and underline the excellent performance of the SAR mixer, with a mixing length growing only logarithmically as a function of Péclet number.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2006 |
| Autor(en): | Hardt, Steffen ; Pennemann, H. ; Schönfeld, F. |
| Art des Eintrags: | Bibliographie |
| Titel: | Theoretical and experimental characterization of a low-Reynolds number split-and-recombine mixer |
| Sprache: | Englisch |
| Publikationsjahr: | 2006 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Microfluidics and Nanofluidics |
| Jahrgang/Volume einer Zeitschrift: | 2 |
| (Heft-)Nummer: | 3 |
| URL / URN: | http://dx.doi.org/10.1007/s10404-005-0071-6 |
| Kurzbeschreibung (Abstract): | A mixing device based on the split-and-recombine (SAR) principle is characterized using both theoretical and experimental methods. The theoretical model relies on solving a 1D diffusion equation in a frame of reference comoving with the flow, thus avoiding the usual numerical artefacts related to the prediction of high-Péclet number mixing. It accounts both for the hydrodynamic focusing of the flow inside the mixing channel and the nontrivial flow topology. The experimental technique used for quantifying the degree of mixing utilizes two initially transparent salt solutions that form a colored compound in a fast chemical reaction. The degree of mixing is derived from the average color saturation found at specific positions along the mixing channel. The data obtained from the theoretical model are in reasonable agreement with the experiments and underline the excellent performance of the SAR mixer, with a mixing length growing only logarithmically as a function of Péclet number. |
| Freie Schlagworte: | Micromixer;Mixing model;Mixing characterization |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet für Technische Thermodynamik (TTD) Zentrale Einrichtungen 16 Fachbereich Maschinenbau > Fachgebiet Nano- und Mikrofluidik (NMF) |
| Hinterlegungsdatum: | 12 Apr 2011 11:55 |
| Letzte Änderung: | 06 Feb 2019 13:47 |
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