采用电阻层析成像技术的油水两相流流型特征研究
Study of oil/water two-phase flow pattern characteristics using electrical resistance tomography technology
查看参考文献10篇
文摘
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流型问题在多相流研究中占有重要地位,对于流型转捩点的研究具有很高的学术价值,但是其研究比较困难,对其影响因素的研究有待完善,测量手段也有待改进。该文采用电阻层析成像技术和压力传感器等设备对油水两相流流型特征进行了实验研究,分析数据重建图像并绘制了流型图。实验使用白油和水作为介质,在管道内径为50 mm,总长约20 m的有机玻璃循环管路中进行。电阻层析成像(electrical resistance tomography, ERT)系统采用单截面16个电极,并在管道上加装压力传感器,通过改变管道入口处水相和油相的表观速度来产生不同流型。实验中采集了不同电极对上的电压变化,并运用反投影算法重建管道截面内电导率分布,进而判断其中各相相分布,实现可视化测量,最后基于流型特征根据实验结果做出对不同流况的流型预判,绘制流型图,并绘制各流型之间的转换边界曲线,和已有流型图进行对比,为流型识别的深入研究提供支持。 |
其他语种文摘
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The issue of flow pattern occupies an important position in the study of multi-phase flow research, while the study of flow’s transition point possesses a high academic value. However, the research of this study is difficult as its influencing factors are obscure, and its detecting approaches need to be improved. In this paper, ERT (electrical resistance tomography)technology and pressure sensor are applied for the study of oil/water flow, and flow pattern map is made after the data analysis and image reconstruction. Mineral oil and water are used as media and the experiment is carried out in a 50 mm inside diameter and 20 m long plexiglass pipe. The Electrical Resistance Tomography (ERT) system with 16 electrodes in single section is used with pressure sensor applied on the pipe, to detect different flow patterns caused by changing the superficial velocity of oil and water phase. By detecting the change of voltage, ERT technology reconstructs the conductivity distribution within the cross section using back-projection method, and to learn the phase distribution with visualization measurement. At last, the flow pattern map and curves of the transform boundary are drawn. Comparing it with former flow pattern map, the study will provide support for deeper flow pattern research. |
来源
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水动力学研究与进展. A辑
,2015,30(1):70-74 【核心库】
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DOI
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10.16076/j.cnki.cjhd.2015.01.010
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关键词
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油水两相流
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水平管
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ERT
;
流型图
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地址
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1.
中国科学院力学研究所, 北京, 100190
2.
中国海油伊拉克有限公司, 北京, 100010
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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1000-4874 |
学科
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力学 |
基金
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国家科学设备开发重点基金
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文献收藏号
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CSCD:5533465
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