射流混合器中液滴破碎的实验与数值研究

IF 4.1 2区工程技术 Q2 ENGINEERING, CHEMICAL

Chemical Engineering Science Pub Date : 2025-05-01 DOI:10.1016/j.ces.2025.121771

Zhenyu Wu , Tonghuan Yu , Yi Zhu , Jinjin Cai , Feng Zhou , Yong Nie

{"title":"射流混合器中液滴破碎的实验与数值研究","authors":"Zhenyu Wu , Tonghuan Yu , Yi Zhu , Jinjin Cai , Feng Zhou , Yong Nie","doi":"10.1016/j.ces.2025.121771","DOIUrl":null,"url":null,"abstract":"<div><div>Jet mixers are essential for multiphase jet reactors to achieve efficient mixing, while their design and optimization are limited by insufficient information on multiphase flow within a jet mixer. A numerical and experimental study was conducted on droplet breakup in an orifice jet mixer. First, a numerical method for jet flow was established and validated with the velocity field measured by particle image velocimetry. Droplet dynamics experiments were then carried out on a high-speed microscope platform. The results show that numerous droplets are generated in a single deformation process, resulting in a reduction of breakup time by orders of magnitude compared to traditional theory. Finally, a new breakup model was developed and implemented into OpenFOAM. The prediction of droplet size distribution is greatly improved, with the mean relative deviation of Sauter mean diameter being 6.96 %. This work provides new insights into droplet dynamics in high-energy dissipation fields.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"313 ","pages":"Article 121771"},"PeriodicalIF":4.1000,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Experimental and numerical study of droplet breakup in a jet mixer\",\"authors\":\"Zhenyu Wu , Tonghuan Yu , Yi Zhu , Jinjin Cai , Feng Zhou , Yong Nie\",\"doi\":\"10.1016/j.ces.2025.121771\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Jet mixers are essential for multiphase jet reactors to achieve efficient mixing, while their design and optimization are limited by insufficient information on multiphase flow within a jet mixer. A numerical and experimental study was conducted on droplet breakup in an orifice jet mixer. First, a numerical method for jet flow was established and validated with the velocity field measured by particle image velocimetry. Droplet dynamics experiments were then carried out on a high-speed microscope platform. The results show that numerous droplets are generated in a single deformation process, resulting in a reduction of breakup time by orders of magnitude compared to traditional theory. Finally, a new breakup model was developed and implemented into OpenFOAM. The prediction of droplet size distribution is greatly improved, with the mean relative deviation of Sauter mean diameter being 6.96 %. This work provides new insights into droplet dynamics in high-energy dissipation fields.</div></div>\",\"PeriodicalId\":271,\"journal\":{\"name\":\"Chemical Engineering Science\",\"volume\":\"313 \",\"pages\":\"Article 121771\"},\"PeriodicalIF\":4.1000,\"publicationDate\":\"2025-05-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemical Engineering Science\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0009250925005949\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering Science","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0009250925005949","RegionNum":2,"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

摘要

射流混合器是多相射流反应器实现高效混合的必要条件，但由于对射流混合器内多相流的了解不足，限制了其设计和优化。对孔板射流混合器中的液滴破碎进行了数值和实验研究。首先，利用粒子图像测速法测量的速度场，建立了射流的数值计算方法，并进行了验证。然后在高速显微镜平台上进行液滴动力学实验。结果表明，在一次变形过程中产生了大量的液滴，与传统理论相比，使破碎时间缩短了几个数量级。最后，开发了一个新的分手模型，并在OpenFOAM中实现。该方法对液滴粒径分布的预测精度有较大提高，平均相对偏差达6.96%。这项工作为研究高能耗散场中的液滴动力学提供了新的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Experimental and numerical study of droplet breakup in a jet mixer

Jet mixers are essential for multiphase jet reactors to achieve efficient mixing, while their design and optimization are limited by insufficient information on multiphase flow within a jet mixer. A numerical and experimental study was conducted on droplet breakup in an orifice jet mixer. First, a numerical method for jet flow was established and validated with the velocity field measured by particle image velocimetry. Droplet dynamics experiments were then carried out on a high-speed microscope platform. The results show that numerous droplets are generated in a single deformation process, resulting in a reduction of breakup time by orders of magnitude compared to traditional theory. Finally, a new breakup model was developed and implemented into OpenFOAM. The prediction of droplet size distribution is greatly improved, with the mean relative deviation of Sauter mean diameter being 6.96 %. This work provides new insights into droplet dynamics in high-energy dissipation fields.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Chemical Engineering Science 工程技术-工程：化工

CiteScore

7.50

自引率

8.50%

发文量

1025

审稿时长

50 days

期刊介绍： Chemical engineering enables the transformation of natural resources and energy into useful products for society. It draws on and applies natural sciences, mathematics and economics, and has developed fundamental engineering science that underpins the discipline. Chemical Engineering Science (CES) has been publishing papers on the fundamentals of chemical engineering since 1951. CES is the platform where the most significant advances in the discipline have ever since been published. Chemical Engineering Science has accompanied and sustained chemical engineering through its development into the vibrant and broad scientific discipline it is today.