HYDRODYNAMIC MODEL OF UPWARD GAS - LIQUID SLUG FLOW IN VERTICAL TUBES

夏国栋; 彭岩; 周芳德; 胡明胜

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HYDRODYNAMIC MODEL OF UPWARD GAS - LIQUID SLUG FLOW IN VERTICAL TUBES

更新时间：2025-12-16

- HYDRODYNAMIC MODEL OF UPWARD GAS - LIQUID SLUG FLOW IN VERTICAL TUBES
- CIESC Journal Issue 6, (1999)
- 作者机构：
  
  北京工业大学环境与能源工程学院,北京工业大学环境与能源工程学院,西安交通大学动力工程多相流国家重点实验室,西安交通大学动力工程多相流国家重点实验室北京100022,北京100022,西安710049,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： Q019
- Online First：25 December 1999，
  
  Published：25 December 1999
- 稿件说明：
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夏国栋, 彭岩, 周芳德, et al. HYDRODYNAMIC MODEL OF UPWARD GAS - LIQUID SLUG FLOW IN VERTICAL TUBES[J]. CIESC Journal, 1999, (6).
DOI：

夏国栋, 彭岩, 周芳德, et al. HYDRODYNAMIC MODEL OF UPWARD GAS - LIQUID SLUG FLOW IN VERTICAL TUBES[J]. CIESC Journal, 1999, (6). DOI：

摘要

基于等效弹单元思想

改进了预测垂直上升管中充分发展气液弹状流流动特性的模型。模型中考虑了界面切应力对液膜运动的影响;并在液弹空隙度预测中引入临界气体夹带速度的概念

以此来描述弹状流中大气泡尾部的混合特性。本文提出的模型还考虑了管径对液弹空隙度的影响。弹状流模型的计算结果得到本文及其他作者实验数据的验证。

Abstract

By reducing intermittency to periodicity

the very complex slug flow structure is simplified to an equivalent unit consisting of a liquid slug

one adjacent Taylor bubble and an aerated liquid film. A region with high local concentration of dispersed bubbles is formed in the front of the liquid slug

because the liquid film entrains gas penetrating the liquid slug. In the current paper

a hydrodynamic model is constructed for gas - liquid two - phase slug flow in vertical tubes

which considers the gas exchange between the Taylor bubble and its following liquid slug. It can predict the flow characteristics of this complex flow pattern. A detailed experimental investigation was carried out in air/water system. An EKTAPRO 1000 high speed motion analyzer and the optical probes were used as measuring instruments. The results predicted by this model are in better agreement with the available experimental data.

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