{"title":"Optimization of VD/VOD multi-stage serial steam ejectors based on CFD","authors":"R. Amini, S. Kheradmand, Mehrdad Rasoulimoghadam","doi":"10.1080/03019233.2022.2139311","DOIUrl":null,"url":null,"abstract":"ABSTRACT The objective of this research is to optimize the first two-stage ejectors of a VD/VOD system in order to increase the entrainment ratio (ER) of the system. By optimizing the first ejector, its working point is located in the double choked region, and its entrainment ratio increases up to 0.342. Furthermore, the maximum back pressure corresponding to the breaking point of the optimized first ejector increases by 12.1% compared to its original state. The working point of the original second ejector is in the single choked region and the performance of this ejector is also low. By optimizing the second ejector, the working point becomes closer to the double choked region, and its entrainment ratio increases by 26.43%. The outlet pressure corresponding to the breaking point of the optimized second ejector increases by 5.1% compared to its original state.","PeriodicalId":14753,"journal":{"name":"Ironmaking & Steelmaking","volume":"50 1","pages":"599 - 612"},"PeriodicalIF":1.7000,"publicationDate":"2022-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ironmaking & Steelmaking","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1080/03019233.2022.2139311","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 0
Abstract
ABSTRACT The objective of this research is to optimize the first two-stage ejectors of a VD/VOD system in order to increase the entrainment ratio (ER) of the system. By optimizing the first ejector, its working point is located in the double choked region, and its entrainment ratio increases up to 0.342. Furthermore, the maximum back pressure corresponding to the breaking point of the optimized first ejector increases by 12.1% compared to its original state. The working point of the original second ejector is in the single choked region and the performance of this ejector is also low. By optimizing the second ejector, the working point becomes closer to the double choked region, and its entrainment ratio increases by 26.43%. The outlet pressure corresponding to the breaking point of the optimized second ejector increases by 5.1% compared to its original state.
期刊介绍：
Ironmaking & Steelmaking: Processes, Products and Applications monitors international technological advances in the industry with a strong element of engineering and product related material. First class refereed papers from the international iron and steel community cover all stages of the process, from ironmaking and its attendant technologies, through casting and steelmaking, to rolling, forming and delivery of the product, including monitoring, quality assurance and environmental issues. The journal also carries research profiles, features on technological and industry developments and expert reviews on major conferences.
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