竖直和倾斜条件下气-液两相流型转变研究

Flow Patterns Transition in Vertical and Upwardly Inclined Two-Phase Flow

以去离子水和空气为两相介质,研究了竖直和倾斜条件下气-液两相流型,发现通道内存在弥散泡状流、泡状流、弹状流、搅拌流和环状流5种流型。通过对流型间转变特性的机理分析,构建了竖直和倾斜条件下各流型的转变准则,与实验数据进行了对比,符合很好。

An experimental study on the flow pattems in vertical and upwardly inclined two-phase flow is carried out using de-ionized water and air as the working media. Five major flow regimes, i.e, dispersed bubble, bubble, slug, chum and annular flow, are recognized. By mechanism analysis, flow pattern transitions from dispersed bubble to bubble/slug, bubble to slug, slug to chum, and chum to annular, are derived and agree well with the experimental data.