This paper presents a study of droplets generation, particularly examining different regimes or patterns of the flow by a novel device that combines two principles for droplets generation (flow focusing and T-junction (FF-TJ)) under different flow conditions, named combined FF-TJ. The study involves both experiment and simulation. From the experiment mineral oil and distilled water, three regimes (namely continuous regime, jetting regime, and squeezing regime) were found. This finding was subsequently confirmed by the simulation, which thus also gave a validation of the simulation system. The simulation was further employed to study the relationship among various parameters, including the velocities of the flows (i.e. sheath flow, middle flow, and crossflow) in the context the three regimes. We observed that the three regimes were determined by two critical values of the velocity of the middle flow, ##IMG## [http://ej.iop.org/images/0960-1317/30/...] {${U_{m1}}$}

中文翻译：

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流动聚焦与三通结合装置中流型的实验与仿真研究

本文对液滴的产生进行了研究，特别是通过一种新颖的装置来研究不同的流态或流动方式，该装置结合了两种在不同流动条件下产生液滴的原理（流动聚焦和T型结（FF-TJ）），称为组合FF -TJ。该研究包括实验和模拟。从实验矿物油和蒸馏水中，发现了三种状态（即连续状态，喷射状态和挤压状态）。随后的仿真结果证实了这一发现，从而也对仿真系统进行了验证。在这三种情况下，还进一步使用模拟研究了各种参数之间的关系，包括流速（即鞘流，中间流和错流）。