垂直环空内气液两相流多尺度算法及模拟研究

伍磊; 刘海湖; 张明乾; 张孟祎; 王宁宁; 王志恒; 席光

doi:10.7652/xjtuxb202601010

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垂直环空内气液两相流多尺度算法及模拟研究

专题　“双碳”背景下的污染控制与资源化利用 | 更新时间：2026-01-15

- 垂直环空内气液两相流多尺度算法及模拟研究
- Multi-Scale Algorithm and Simulation Study of Gas-Liquid Two-Phase Flow in Vertical Annulus
- 西安交通大学学报 2026年60卷第1期页码：94-106
- 作者机构：
  
  西安交通大学能源与动力工程学院，710049，西安
  中广核工程有限公司核电安全技术与装备全国重点实验室，518100，广东深圳
- 作者简介：
  
  作者简介：伍磊（2000—），男，硕士生；
  王志恒（通信作者），男，副教授，博士生导师。
- 基金信息：
  
  国家重点研发计划资助项目(2022 YFF0503500);国家自然科学基金资助项目。(12072257)
- DOI：10.7652/xjtuxb202601010
  中图分类号： O359+.1
- 收稿：2025-04-27，
  
  纸质出版：2026-01-10
- 稿件说明：
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伍磊, 刘海湖, 张明乾, 等. 垂直环空内气液两相流多尺度算法及模拟研究[J]. 西安交通大学学报, 2026,60(1):94-106.

WU Lei, LIU Haihu, ZHANG Mingqian, et al. Multi-Scale Algorithm and Simulation Study of Gas-Liquid Two-Phase Flow in Vertical Annulus[J]. Journal of Xi'an Jiaotong University, 2026, 60(1): 94-106.
伍磊, 刘海湖, 张明乾, 等. 垂直环空内气液两相流多尺度算法及模拟研究[J]. 西安交通大学学报, 2026,60(1):94-106. DOI： 10.7652/xjtuxb202601010.

WU Lei, LIU Haihu, ZHANG Mingqian, et al. Multi-Scale Algorithm and Simulation Study of Gas-Liquid Two-Phase Flow in Vertical Annulus[J]. Journal of Xi'an Jiaotong University, 2026, 60(1): 94-106. DOI： 10.7652/xjtuxb202601010.

摘要

为深入探究垂直环空内气液两相流动规律，通过集成Tomiyama曳力与升力模型、碰撞聚并模型以及离散气泡模型到流体体积法（DBM-to-VOF）的转换算法，在OpenFOAM框架下开发了DBM-VOF多尺度耦合求解器，并通过系列典型算例验证了其准确性与有效性。基于该求解器，对垂直环空内气液两相流进行数值模拟，识别了泡状流、弹帽流、段塞流和搅拌流4种典型流型，并构建了气液两相流型图。研究结果表明：泡状流含气率曲线波动平缓，其概率密度函数（PDF）曲线呈狭窄陡峭的单峰结构；弹帽流含气率曲线波动较大，PDF曲线为单峰结构且在较高含气率区域形成宽尾；段塞流含气率曲线呈周期性剧烈波动，PDF曲线为双峰结构；搅拌流含气率曲线呈现周期性大振幅波动，其均值显著高于其他流型，PDF曲线在高含气率位置为单峰，并在低含气率区域形成宽尾。所建立的流型图与前人实验结果基本吻合，但在一定表观液速下，建立的流型图中段塞流向搅拌流转换所需的表观气速更低。该研究为垂直环空内气液两相流动的机理研究提供新的数值工具，并为相关工程应用中的流型预测与优化提供理论支持。

Abstract

To deeply investigate the flow patterns of gas-liquid two-phase flow in a vertical annulus，this study develops a multi-scale coupled DBM-VOF solver within the OpenFOAM framework by integrating the Tomiyama drag and lift models，collision-coalescence model，and DBM-to-VOF conversion algorithm.Its accuracy and effectiveness are verified through a series of typical benchmark cases.Using this solver，numerical simulations of gas-liquid two-phase flow in a vertical annulus are conducted，identifying four typical flow patterns：bubbly flow，cap-bubbly flow，slug flow，and churn flow，and constructing a gas-liquid two-phase flow pattern map.The results indicate that the void fraction curve of bubbly flow exhibits mild fluctuations，and its probability density function (PDF)curve shows a narrow，steep unimodal structure.The void fraction curve of cap-bubbly flow fluctuates more significantly，with a unimodal PDF structure forming a fat tail in the higher void fraction region.The slug flow void fraction curve shows periodic intense fluctuations，and its PDF curve has a bimodal structure.The void fraction curve of churn flow displays periodic large-amplitude fluctuations with a mean value significantly higher than other flow patterns；its PDF curve shows a unimodal peak at high void fractions and forms a fat tail in the low void fraction region.The established flow pattern map generally agrees with previous experimental results，but under certain superficial liquid velocities，the transition from slug flow to churn flow in this study's map requires a lower superficial gas velocity.This study provides a new numerical tool for mechanistic studies of gas-liquid two-phase flow in vertical annuli and offers theoretical support for flow pattern prediction and optimization in related engineering applications.

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