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首页> 外文期刊>International Journal of Multiphase Flow >Viscous oil-water flows in a microchannel initially saturated with oil: Flow patterns and pressure drop characteristics
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Viscous oil-water flows in a microchannel initially saturated with oil: Flow patterns and pressure drop characteristics

机译：粘性油水在最初充满油的微通道中流动：流型和压降特性

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摘要

Immiscible viscous liquid-liquid two-phase flow patterns and pressure drop characteristics in a circular microchannel have been investigated. Water and silicone oil with a dynamic viscosity of 863 mPa. s were injected into a fused silica microchannel with an inner diameter of 250. μm. As the microchannel was initially filled with the silicone oil, an oil film was found to always form and remain on the microchannel wall. Different flow patterns were observed and classified over a wide range of water and oil flow rates. A flow pattern map is presented in terms of Re, Ca, and We numbers. Two-phase pressure drop data have also been collected and analyzed to develop a simple correlation for slug, annular and annular-droplet flow patterns in terms of superficial water and oil velocities.
机译：研究了圆形微通道中不混溶的粘性液-液两相流型和压降特性。水和硅油的动态粘度为863 mPa。将其注入内径为250μm的熔融石英微通道中。当微通道最初充满硅油时，发现油膜始终形成并保留在微通道壁上。观察到不同的流型，并在很宽的水和油流速范围内对其进行分类。用Re，Ca和We数表示流型图。还已经收集并分析了两相压降数据，以根据表层水和油的速度建立了弹团，环形和环形液滴流型的简单关联。

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