气泡
段塞流
流量(数学)
两相流
材料科学
机械
多相流
管道运输
流动可视化
管道(软件)
地质学
模拟
物理
环境科学
计算机科学
环境工程
程序设计语言
作者
Yeqi Cao,Qiang Xu,Haiyang Yu,Bo Huang,Tianyu Li,Liejin Guo
标识
DOI:10.1016/j.expthermflusci.2023.111017
摘要
It is greatly essential for the construction of multiphase flow models and the flow assurance of oil and gas pipelines to study the fully developed interface characteristics at different flow patterns in the industrial-grade long-distance pipelines. In this paper, the phase interface structures of dispersed bubble flow and three slug sub-flow patterns are captured by visualization method in a 46 mm ID, 1657 m long pipeline. It is found that the interface characteristics between elongated bubbles and liquid film can effectively distinguish different slug sub-flow patterns, and a quantitative division criterion between different slug sub-flow patterns is proposed. The transition boundary prediction model for dispersed bubble flow and slug flow in long pipeline is established, and the flow pattern map at high liquid velocities and low gas velocities is plotted. With the increase of two-phase mixture velocity, the radial position of elongated bubble head approaches the middle of the pipeline, and the liquid film thickness is stably distributed around 0.37 D. The correlations that predict the radial position of elongated bubble head, liquid film thickness, and elongated bubble velocity for long pipeline are established, with maximum error less than 15 %.
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