Huibo Meng, Jiawei Zhang, Yanfang Yu*, Yanfeng Zhao, Deao Li, Kexin Xiang and Yi Ji,
{"title":"Investigation into Droplet Size Distribution and Turbulent Mixing Enhancement Performance in a Lightnin Static Mixer","authors":"Huibo Meng, Jiawei Zhang, Yanfang Yu*, Yanfeng Zhao, Deao Li, Kexin Xiang and Yi Ji, ","doi":"10.1021/acs.iecr.4c0242410.1021/acs.iecr.4c02424","DOIUrl":null,"url":null,"abstract":"<p >The CFD–PBM coupled model was utilized to investigate the liquid–liquid turbulent mixing and enhancement performance in a Lightnin static mixer (LSM). The droplet size distribution (DSD), Sauter mean diameter (<i>d</i><sub>32</sub>), and mixing index of the LSM were studied. The effects of the length–diameter ratio (<i>l</i>/<i>D</i><sub>0</sub>), gap-diameter ratio (G/<i>D</i><sub>0</sub>), and arrangement were analyzed. The correlation among <i>d</i><sub>32</sub>/<i>D</i><sub>0</sub>, the Fanning friction factor (<i>f</i>), and the Weber number was established. The <i>d</i><sub>32</sub> and Poiseuille number calculated from simulation were in good agreement with experiments, and the <i>d</i><sub>32</sub> decreased by 93.52%. Meanwhile, the analysis of turbulent higher-order moments of DSD showed that the DSD in the L–R LSM with <i>l</i>/<i>D</i><sub>0</sub> = 1 was narrower than that in other static mixers. Gray relational analysis revealed that the addition of gaps in the LSM can improve distribution mixing performance with a lower pressure drop. The L–R LSM with <i>l</i>/<i>D</i><sub>0</sub> = 1 and G/<i>D</i><sub>0</sub> = 1 is recommended based on the enhancement factor and gray analysis.</p>","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"63 48","pages":"21062–21077 21062–21077"},"PeriodicalIF":3.9000,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Industrial & Engineering Chemistry Research","FirstCategoryId":"5","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.iecr.4c02424","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The CFD–PBM coupled model was utilized to investigate the liquid–liquid turbulent mixing and enhancement performance in a Lightnin static mixer (LSM). The droplet size distribution (DSD), Sauter mean diameter (d32), and mixing index of the LSM were studied. The effects of the length–diameter ratio (l/D0), gap-diameter ratio (G/D0), and arrangement were analyzed. The correlation among d32/D0, the Fanning friction factor (f), and the Weber number was established. The d32 and Poiseuille number calculated from simulation were in good agreement with experiments, and the d32 decreased by 93.52%. Meanwhile, the analysis of turbulent higher-order moments of DSD showed that the DSD in the L–R LSM with l/D0 = 1 was narrower than that in other static mixers. Gray relational analysis revealed that the addition of gaps in the LSM can improve distribution mixing performance with a lower pressure drop. The L–R LSM with l/D0 = 1 and G/D0 = 1 is recommended based on the enhancement factor and gray analysis.
期刊介绍:
ndustrial & Engineering Chemistry, with variations in title and format, has been published since 1909 by the American Chemical Society. Industrial & Engineering Chemistry Research is a weekly publication that reports industrial and academic research in the broad fields of applied chemistry and chemical engineering with special focus on fundamentals, processes, and products.