VIGNEAUX, Paul

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VIGNEAUX, Paul
Institut de Mathématiques de Bordeaux [IMB]

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Proceedings of the European Conference on Computational Fluid Dynamics 2006 (ECCOMAS CFD 2006), Proceedings of the European Conference on Computational Fluid Dynamics 2006 (ECCOMAS CFD 2006), European Conference on Computational Fluid Dynamics 2006 (ECCOMAS CFD 2006), 2006-09-05, Egmond aan Zee. 2006p. 180

Résumé en anglais

The field of microfluidics has dramatically improved over the last decade: it enables the transport of minuscule amounts of fluid (nanolitres) through channels the diameter of a single human hair. This miniaturization is increasingly employed to build a wide range of technological devices for example, genome sequencing or using microdroplets as chemical reactors. The aim of this paper is to introduce a two-dimensional numerical model and approximations of bifluid flows in microchannels in order to simulate the dynamics of microdroplets. The bifluid model is derived following the level set approach of Sussman et al. (1994). We perform a numerical stability analysis which leads to a restrictive condition on the computational time step. We then present a method to relax this constraint. We give details and numerical results of the drop forming due to pinching and the evolution of droplets in microchannels using the presented method.< Réduire

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level set

microfluidics

droplets

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Droplets in microchannels with Level Set method

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