{"title":"Influence of microstructures on liquid spreading on inclined plates: A CFD based study","authors":"Christopher Dechert, Eugeny Y. Kenig","doi":"10.1016/j.ces.2025.121317","DOIUrl":null,"url":null,"abstract":"Efficiency of separation columns strongly depends on the geometrical properties of column internals. The surface of structured packing is often covered by microstructures, as this is expected to enhance separation. Since the size of the interfacial area between the contacting fluids is a key factor for the separation efficiency, the influence of microstructures on the packing surface wetting has to be understood. In this work, several microstructures applied on inclined plates are studied by CFD methods to investigate their influence on the liquid spreading over the surface. Liquid flow rate and momentum as well as the size, shape and orientation of the microstructures are varied. Along with size and shape, especially the orientation of microstructures is found to have the strongest influence on the liquid flow pattern and the size of the wetted area. Therefore, a reasonable adjustment of the microstructure and its orientation can increase the interfacial area and hence the efficiency of the column.","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"76 1","pages":""},"PeriodicalIF":4.1000,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Engineering Science","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1016/j.ces.2025.121317","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
Abstract
Efficiency of separation columns strongly depends on the geometrical properties of column internals. The surface of structured packing is often covered by microstructures, as this is expected to enhance separation. Since the size of the interfacial area between the contacting fluids is a key factor for the separation efficiency, the influence of microstructures on the packing surface wetting has to be understood. In this work, several microstructures applied on inclined plates are studied by CFD methods to investigate their influence on the liquid spreading over the surface. Liquid flow rate and momentum as well as the size, shape and orientation of the microstructures are varied. Along with size and shape, especially the orientation of microstructures is found to have the strongest influence on the liquid flow pattern and the size of the wetted area. Therefore, a reasonable adjustment of the microstructure and its orientation can increase the interfacial area and hence the efficiency of the column.
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.
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