{"title":"螺旋十字形燃料组件中气液流的流动阻力和相分布实验研究","authors":"","doi":"10.1016/j.anucene.2024.110838","DOIUrl":null,"url":null,"abstract":"<div><p>The helical cruciform fuel (HCF) is characterized by self-supporting and enhanced transverse mixing, which may replace the cylindrical fuel in commercial light water reactor (LWR). In the presented work, the experimental study on the flow resistance and phase distribution of a 4 × 4 HCF assembly was carried out. The experimental system of air–water two-phase flow was established, and the wire-mesh sensor (WMS) technology was introduced for the void fraction measurement and flow regime identification. The two-phase hydraulic loss of the HCF assembly was larger than that of the pipe and cylindrical rod bundle. The liquid phase friction multiplier of HCF assembly was decreased by increasing the mass flux. The flow regimes involve the bubble flow, cap bubble flow, cap churn flow and churn flow were found in the HCF assembly. The gas phase was gathering towards the central region of HCF assembly by the directional cross-flow. Besides, the two-phase friction multiplier correlation and drift flux model for the HCF assembly were proposed.</p></div>","PeriodicalId":8006,"journal":{"name":"Annals of Nuclear Energy","volume":null,"pages":null},"PeriodicalIF":1.9000,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Experimental study on flow resistance and phase distribution of gas-liquid flow in helical cruciform fuel assembly\",\"authors\":\"\",\"doi\":\"10.1016/j.anucene.2024.110838\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The helical cruciform fuel (HCF) is characterized by self-supporting and enhanced transverse mixing, which may replace the cylindrical fuel in commercial light water reactor (LWR). In the presented work, the experimental study on the flow resistance and phase distribution of a 4 × 4 HCF assembly was carried out. The experimental system of air–water two-phase flow was established, and the wire-mesh sensor (WMS) technology was introduced for the void fraction measurement and flow regime identification. The two-phase hydraulic loss of the HCF assembly was larger than that of the pipe and cylindrical rod bundle. The liquid phase friction multiplier of HCF assembly was decreased by increasing the mass flux. The flow regimes involve the bubble flow, cap bubble flow, cap churn flow and churn flow were found in the HCF assembly. The gas phase was gathering towards the central region of HCF assembly by the directional cross-flow. Besides, the two-phase friction multiplier correlation and drift flux model for the HCF assembly were proposed.</p></div>\",\"PeriodicalId\":8006,\"journal\":{\"name\":\"Annals of Nuclear Energy\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2024-08-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Annals of Nuclear Energy\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0306454924005012\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"NUCLEAR SCIENCE & TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Annals of Nuclear Energy","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0306454924005012","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"NUCLEAR SCIENCE & TECHNOLOGY","Score":null,"Total":0}
Experimental study on flow resistance and phase distribution of gas-liquid flow in helical cruciform fuel assembly
The helical cruciform fuel (HCF) is characterized by self-supporting and enhanced transverse mixing, which may replace the cylindrical fuel in commercial light water reactor (LWR). In the presented work, the experimental study on the flow resistance and phase distribution of a 4 × 4 HCF assembly was carried out. The experimental system of air–water two-phase flow was established, and the wire-mesh sensor (WMS) technology was introduced for the void fraction measurement and flow regime identification. The two-phase hydraulic loss of the HCF assembly was larger than that of the pipe and cylindrical rod bundle. The liquid phase friction multiplier of HCF assembly was decreased by increasing the mass flux. The flow regimes involve the bubble flow, cap bubble flow, cap churn flow and churn flow were found in the HCF assembly. The gas phase was gathering towards the central region of HCF assembly by the directional cross-flow. Besides, the two-phase friction multiplier correlation and drift flux model for the HCF assembly were proposed.
期刊介绍：
Annals of Nuclear Energy provides an international medium for the communication of original research, ideas and developments in all areas of the field of nuclear energy science and technology. Its scope embraces nuclear fuel reserves, fuel cycles and cost, materials, processing, system and component technology (fission only), design and optimization, direct conversion of nuclear energy sources, environmental control, reactor physics, heat transfer and fluid dynamics, structural analysis, fuel management, future developments, nuclear fuel and safety, nuclear aerosol, neutron physics, computer technology (both software and hardware), risk assessment, radioactive waste disposal and reactor thermal hydraulics. Papers submitted to Annals need to demonstrate a clear link to nuclear power generation/nuclear engineering. Papers which deal with pure nuclear physics, pure health physics, imaging, or attenuation and shielding properties of concretes and various geological materials are not within the scope of the journal. Also, papers that deal with policy or economics are not within the scope of the journal.
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