{"title":"滚动运动下螺旋卷管中两相流不稳定性的实验研究","authors":"","doi":"10.1016/j.anucene.2024.110835","DOIUrl":null,"url":null,"abstract":"<div><p>Helically coiled tube under ocean conditions will subject to serious two-phase flow instability. This study experimentally investigated two-phase flow instabilities in a helically coiled tube under static and rolling conditions. Under static condition, Density Wave Oscillation (DWO), Pressure Drop Oscillation (PDO), and Thermal Oscillation (TO) are observed, and the stability map for DWO is established. Under rolling condition, Single-phase flow oscillation, PDO, and DWO are observed, and compared to the phenomena of static condition. It is found that rolling condition can induce flow oscillation, making the DWO and PWO more severe. Through Fast Fourier Transform (FFT) analysis, it is found that impact of rolling conditions on flow instability diminishes as heating power is increased. In addition, the parameter effects of inlet subcooling, volumetric flow rate, system pressure, rolling angle and rolling period on flow stability are investigated.</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 two-phase flow instability in helically coiled tube under rolling motion\",\"authors\":\"\",\"doi\":\"10.1016/j.anucene.2024.110835\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Helically coiled tube under ocean conditions will subject to serious two-phase flow instability. This study experimentally investigated two-phase flow instabilities in a helically coiled tube under static and rolling conditions. Under static condition, Density Wave Oscillation (DWO), Pressure Drop Oscillation (PDO), and Thermal Oscillation (TO) are observed, and the stability map for DWO is established. Under rolling condition, Single-phase flow oscillation, PDO, and DWO are observed, and compared to the phenomena of static condition. It is found that rolling condition can induce flow oscillation, making the DWO and PWO more severe. Through Fast Fourier Transform (FFT) analysis, it is found that impact of rolling conditions on flow instability diminishes as heating power is increased. In addition, the parameter effects of inlet subcooling, volumetric flow rate, system pressure, rolling angle and rolling period on flow stability are investigated.</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/S0306454924004985\",\"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/S0306454924004985","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 two-phase flow instability in helically coiled tube under rolling motion
Helically coiled tube under ocean conditions will subject to serious two-phase flow instability. This study experimentally investigated two-phase flow instabilities in a helically coiled tube under static and rolling conditions. Under static condition, Density Wave Oscillation (DWO), Pressure Drop Oscillation (PDO), and Thermal Oscillation (TO) are observed, and the stability map for DWO is established. Under rolling condition, Single-phase flow oscillation, PDO, and DWO are observed, and compared to the phenomena of static condition. It is found that rolling condition can induce flow oscillation, making the DWO and PWO more severe. Through Fast Fourier Transform (FFT) analysis, it is found that impact of rolling conditions on flow instability diminishes as heating power is increased. In addition, the parameter effects of inlet subcooling, volumetric flow rate, system pressure, rolling angle and rolling period on flow stability are investigated.
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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