Abstract

This paper presents the experimental and numerical results of modeling the local structure of gas-liquid downflow in a vertical pipe. The measurements were carried out using the PIV/PLIF system “Polis-PIV,” developed at the Institute of Thermophysics SB RAS. The numerical model is based on the use of a two-fluid Eulerian approach. The effect of changes in the diameter of air bubbles on the local flow structure and wall friction in a two-phase bubbly flow is studied.

中文翻译：

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气泡对垂直管中向下两相流的流动结构和湍流的影响

摘要

本文介绍了模拟垂直管道中气液向下流动的局部结构的实验和数值结果。使用在SB RAS热物理研究所开发的PIV / PLIF系统“ Polis-PIV”进行测量。数值模型基于双流体欧拉方法的使用。研究了气泡直径的变化对两相气泡流中局部流动结构和壁摩擦的影响。