T型微通道中液滴的数值模拟.pdf

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T型微通道中液滴的数值模拟

15th Australasian Fluid Mechanics Conference The University of Sydney, Sydney, Australia 13-17 December 2004 Numerical simulation of drop formation in a T-shaped microchannel J.L. Liow 1 1Mechanical Engineering Discipline, School of Engineering James Cook University, Qld, 4811 AUSTRALIA Abstract smaller than the slit width [1], or the use of fine pores and stepped structures to try and produce reproducible drop sizes The formation of water drops of specific size when sheared by [11]. More complex network of T-junctions have been shown a tetradecane stream at a T-junction in a microchannel was in- to enable drop size distributions to be controlled (Link et al. as vestigated numerically. The numerical results showed that the referenced in [10]). The control of drop breakup is influenced water drop sizes decreased with increasing tetradecane flow rate significantly by the interfacial tension between the two fluids and decreasing interfacial tension. This is in agreement with and Dreyfus et al. [3] have found that without the presence of published experimental results. During the formation of the

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