Simulation of a microfluidic flow-focusing device

DUPIN, M. M., HALLIDAY, I. and CARE, C. M. (2006). Simulation of a microfluidic flow-focusing device. Physical Review E (PRE), 73 (5), 055701. [Article]

Abstract

We present a model of microfluidic flow of several completely immiscible fluids and use it to simulate a whole flow focusing device chamber. Our efficient, practical model supports a large parameter space, spanned by surface wetting, surface tension, liquid-liquid wetting, viscosity ratio, and inlet velocity. It is based upon an N-component lattice Boltzmann method with interrupted coalescence [Dupin et al., Philos. Trans. R. Soc. London, Ser. A 362, 1885 (2004)], here adapted for calculations at low capillary and Reynolds numbers, with wetting and significantly reduced spurious flow. Results over 2 orders of magnitude in Reynolds number are presented.

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