{"title":"多通道文丘里喷嘴气蚀特性的数值研究","authors":"","doi":"10.1007/s40997-023-00735-w","DOIUrl":null,"url":null,"abstract":"<h3>Abstract</h3> <p>Hydrodynamic cavitation is a prevalent phenomenon within fluid dynamics, offering substantial advantages in various engineering applications. The alteration of cavitation venturi structure and the augmentation of hydrodynamic cavitation intensity have long represented a dynamic research domain. In this context, we introduce a novel cavitation venturi design with the explicit aim of amplifying cavitation intensity by expanding the flow channel within the venturi nozzle. In this study, we conducted a comprehensive analysis of the flow characteristics inside the nozzle using large eddy simulation and numerical simulation with the Zwart cavitation model. We compared the cavitation evolution process of two distinct nozzles under specific conditions: inlet pressure ranging from 0.2 to 0.6 MPa and a transient time interval of 0–1 ms. Additionally, we evaluated the average steam volume fraction within the nozzle. The numerical results demonstrate that, when subjected to identical boundary conditions, the multi-channel venturi nozzle exhibits a greater capacity to generate steam volume, consequently amplifying the cavitation energy produced at the nozzle outlet and intensifying cavitation. The results of our research provide a crucial reference for the design of nozzles in various engineering applications.</p>","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":null,"pages":null},"PeriodicalIF":16.4000,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Numerical Study on Cavitation Characteristics of Multi-channel Venturi Nozzle\",\"authors\":\"\",\"doi\":\"10.1007/s40997-023-00735-w\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3>Abstract</h3> <p>Hydrodynamic cavitation is a prevalent phenomenon within fluid dynamics, offering substantial advantages in various engineering applications. The alteration of cavitation venturi structure and the augmentation of hydrodynamic cavitation intensity have long represented a dynamic research domain. In this context, we introduce a novel cavitation venturi design with the explicit aim of amplifying cavitation intensity by expanding the flow channel within the venturi nozzle. In this study, we conducted a comprehensive analysis of the flow characteristics inside the nozzle using large eddy simulation and numerical simulation with the Zwart cavitation model. We compared the cavitation evolution process of two distinct nozzles under specific conditions: inlet pressure ranging from 0.2 to 0.6 MPa and a transient time interval of 0–1 ms. Additionally, we evaluated the average steam volume fraction within the nozzle. The numerical results demonstrate that, when subjected to identical boundary conditions, the multi-channel venturi nozzle exhibits a greater capacity to generate steam volume, consequently amplifying the cavitation energy produced at the nozzle outlet and intensifying cavitation. The results of our research provide a crucial reference for the design of nozzles in various engineering applications.</p>\",\"PeriodicalId\":1,\"journal\":{\"name\":\"Accounts of Chemical Research\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":16.4000,\"publicationDate\":\"2023-12-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Accounts of Chemical Research\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.1007/s40997-023-00735-w\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s40997-023-00735-w","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Numerical Study on Cavitation Characteristics of Multi-channel Venturi Nozzle
Abstract
Hydrodynamic cavitation is a prevalent phenomenon within fluid dynamics, offering substantial advantages in various engineering applications. The alteration of cavitation venturi structure and the augmentation of hydrodynamic cavitation intensity have long represented a dynamic research domain. In this context, we introduce a novel cavitation venturi design with the explicit aim of amplifying cavitation intensity by expanding the flow channel within the venturi nozzle. In this study, we conducted a comprehensive analysis of the flow characteristics inside the nozzle using large eddy simulation and numerical simulation with the Zwart cavitation model. We compared the cavitation evolution process of two distinct nozzles under specific conditions: inlet pressure ranging from 0.2 to 0.6 MPa and a transient time interval of 0–1 ms. Additionally, we evaluated the average steam volume fraction within the nozzle. The numerical results demonstrate that, when subjected to identical boundary conditions, the multi-channel venturi nozzle exhibits a greater capacity to generate steam volume, consequently amplifying the cavitation energy produced at the nozzle outlet and intensifying cavitation. The results of our research provide a crucial reference for the design of nozzles in various engineering applications.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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