Modelling Annular Micromixers
| Autor: | Jonathan West, James P. Gleeson, Anne Gelb, Olivia M. Roche |
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| Rok vydání: | 2004 |
| Předmět: | |
| Zdroj: | SIAM Journal on Applied Mathematics. 64:1294-1310 |
| ISSN: | 1095-712X 0036-1399 |
| DOI: | 10.1137/s0036139902420407 |
| Popis: | Magnetohydrodynamic mixing of two fluids in an annular microchannel is modelled as a two-dimensional laminar convection-diffusion problem and examined using asymptotic analysis and numerical simulation. The time T required for mixing of a plug of solute depends on the Peclet number Pe and on the geometry of the annulus. Three scaling regimes are identified: purely diffusive, Taylor-dispersive, and convection-dominated; each has a characteristic power-law dependence of T upon Pe. Consequences of these results for optimal micromixer design are discussed. |
| Databáze: | OpenAIRE |
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