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首页> 外文期刊>Journal of visualization >Physics of aeration in slug: flow visualization analysis in horizontal pipes
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Physics of aeration in slug: flow visualization analysis in horizontal pipes

机译：SLUG曝气物理：水平管中的流动可视化分析

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摘要

Aeration in slug and associated secondary flow leads to surging of pressure and erosion corrosion in pipe. Surging of pressure develops high mechanical impact on the pipe, and erosion corrosion reduces the thickness of internal wall, thereby resulting in pipe failure. To explore the phenomena of aeration in slug, flow visualization analysis is reported in this paper for intermittent flow sub-regimes and their transition. Analysis is reported for onset of slug, transition of plug to slug flow and development of aeration at the slug front. The visualized images and the motion pictures captured using high-speed photography in the present experiments are used to depict the process of air entrapment during the transition of wavy-stratified flow to slug flow as well as plug flow to slug flow. It is depicted for the first time through our visualization analysis that gas bubble entrapment in slug happens due to plunging kind of wave breaking mechanism. The captured images are also analyzed to describe the phenomena of augmentation of aeration in slug leading to the formation of highly aerated slug flow. Thorough understanding of aeration in slug will help in avoiding the chances of pipe failure.
机译：在SLUG和相关二次流动中的通气导致管道中的压力和腐蚀腐蚀的潮流。压力的汹涌对管道产生高机械冲击，腐蚀腐蚀降低了内壁的厚度，从而导致管道故障。为了探讨SLUG中的曝气现象，本文报告了流动性流动子制度及其过渡的流动可视化分析。据报道，SLUG的发作，插头过渡到SLUP前部的曝气发射的分析。在本实验中使用高速摄影捕获的可视化图像和运动图像用于描绘在波状流过到块流的波浪分层流动期间的空气滞留过程以及塞流到块状流。它是首次描绘的，通过我们的可视化分析来描绘，即由于流动的波断裂机构引起的SLUG中的气泡夹紧发生。还分析了捕获的图像以描述释放的曝气的增强现象，导致形成高曝气的块流。彻底了解SLUG中的通气将有助于避免管道故障的机会。

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