Yanfang Yu , Kexin Xiang , Huibo Meng , Wen Li , Deao Li , Ruiyu Xia , Zhiying Han
{"title":"A comprehensive review of gas-liquid two-phase flow in static mixers","authors":"Yanfang Yu , Kexin Xiang , Huibo Meng , Wen Li , Deao Li , Ruiyu Xia , Zhiying Han","doi":"10.1016/j.cep.2025.110434","DOIUrl":null,"url":null,"abstract":"<div><div>In this study, the gas-liquid two-phase flow in the static mixer is comprehensively reviewed from the macroscopic hydrodynamic characteristics to the mesoscopic bubble dynamic behaviors. Firstly, the classification of static mixers and their applications in gas-liquid two-phase flow are summarized. Secondly, the research on energy efficiency and bubble characteristics in the static mixer is outlined. The experimental techniques for measuring the pressure drop (Δ<em>p</em>) and identifying bubbles are mainly introduced and the evaluation parameters of flow and mixing characteristics are analyzed, which includes Δ<em>p</em>, Sauter mean diameter (<em>d</em><sub>32</sub>) and volumetric mass transfer coefficient (<em>k</em><sub>L</sub><em>a</em>). The non-swirling and swirling flow patterns are systematically analyzed and the evolution characteristics of gas-liquid two-phase flow are discussed in horizontal and vertical static mixers. In addition, the multi-scale modeling method of coupling computational fluid dynamics (CFD) and population balance model (PBM) is summarized and the important theories of bubble dynamics are elucidated, which encompass bubble drag, coalescence and breakup models. The applicability and limitations of different models in predicting the bubble size are analyzed. Finally, the flow mechanism of gas-liquid systems in static mixers is systematically summarized and its future prospects are presented.</div></div>","PeriodicalId":9929,"journal":{"name":"Chemical Engineering and Processing - Process Intensification","volume":"216 ","pages":"Article 110434"},"PeriodicalIF":3.8000,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering and Processing - Process Intensification","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0255270125002831","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
Abstract
In this study, the gas-liquid two-phase flow in the static mixer is comprehensively reviewed from the macroscopic hydrodynamic characteristics to the mesoscopic bubble dynamic behaviors. Firstly, the classification of static mixers and their applications in gas-liquid two-phase flow are summarized. Secondly, the research on energy efficiency and bubble characteristics in the static mixer is outlined. The experimental techniques for measuring the pressure drop (Δp) and identifying bubbles are mainly introduced and the evaluation parameters of flow and mixing characteristics are analyzed, which includes Δp, Sauter mean diameter (d32) and volumetric mass transfer coefficient (kLa). The non-swirling and swirling flow patterns are systematically analyzed and the evolution characteristics of gas-liquid two-phase flow are discussed in horizontal and vertical static mixers. In addition, the multi-scale modeling method of coupling computational fluid dynamics (CFD) and population balance model (PBM) is summarized and the important theories of bubble dynamics are elucidated, which encompass bubble drag, coalescence and breakup models. The applicability and limitations of different models in predicting the bubble size are analyzed. Finally, the flow mechanism of gas-liquid systems in static mixers is systematically summarized and its future prospects are presented.
期刊介绍:
Chemical Engineering and Processing: Process Intensification is intended for practicing researchers in industry and academia, working in the field of Process Engineering and related to the subject of Process Intensification.Articles published in the Journal demonstrate how novel discoveries, developments and theories in the field of Process Engineering and in particular Process Intensification may be used for analysis and design of innovative equipment and processing methods with substantially improved sustainability, efficiency and environmental performance.