Mixing of two fluid streams in a microchannel using the Taylor-Aris dispersion effect

Hengzi Wang; Pio Iovenitti; Erol C. Harvey; Syed Masood

doi:10.1117/12.469082

14 November 2002 Mixing of two fluids streams in a microchannel using the Taylor-Aris dispersion effect

Hengzi Wang, Pio Iovenitti, Erol C. Harvey, Syed Masood

Proceedings Volume 4937, Biomedical Applications of Micro- and Nanoengineering; (2002) https://doi.org/10.1117/12.469082
Event: SPIE's International Symposium on Smart Materials, Nano-, and Micro- Smart Systems, 2002, Melbourne, Australia

Abstract

Taylor-Aris dispersion is an unwanted effect in some applications, such as chromatography, because of its rapid dispersion along channel axis direction to cause the difficulties to separation. However, this effect can be used in solving mixing problems. In this presentation, the authors studied mixing of two streams of food dye solution in a microchannel. The two liquids sandwiched in the axis direction, and due to non-slip boundary condition, the slugs of liquids stretched and thus increase their interfacial area. This phenomena was firstly studied by Taylor about the dispersion of solute in a circular capillary, and then improved by Aris. Numerical analysis was applied to design mixing section in microchannels, and simplified experiments were conducted to illustrate the concept.

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Hengzi Wang, Pio Iovenitti, Erol C. Harvey, and Syed Masood "Mixing of two fluids streams in a microchannel using the Taylor-Aris dispersion effect", Proc. SPIE 4937, Biomedical Applications of Micro- and Nanoengineering, (14 November 2002); https://doi.org/10.1117/12.469082

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KEYWORDS

Microfluidics

Diffusion

Excimer lasers

Liquids

Fluid dynamics

Numerical simulations

Capillaries

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