The Performance of Electromagnetic Flowmeters in a Liquid Metal Two-Phase Flow
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概要
- 論文の詳細を見る
In order to investigate the characteristics of an electromagnetic flowmeter in a liquid metal two-phase flow, AC electromagnetic flowmeters were designed and manufactured. Two-phase flow experiments, encompassing bubbly to slug flow regimes, were realized with a water-air mixture and a liquid sodium-nitrogen mixture, respectively. The relation ΔUTP=ΔUSP⁄(1−α), between the flow induced electromotive force (e.m.f.) of a single-phase flow and that of a two-phase flow, was verified by the measured e.m.f.s and the void fraction α for a bubbly flow regime. Whereas there is no difference in the shape of the flow induced e.m.f. between single-phase and bubbly flow, the signal amplitude of the bubbly flow is greater than that of the single-phase flow under the same water or liquid sodium flow rate, since the real liquid velocity is higher than that of the single-phase flow. In the case of a slug flow, the phase and the amplitude of the flowmeter output changed drastically when a slug bubble passed through the flowmeter. Therefore, the electromagnetic flowmeter shows good potential as a useful device for identifying the flow regimes. The void fraction in a bubbly flow can be measured using two electromagnetic flowmeters.
- 社団法人 日本原子力学会の論文
- 2003-10-25
著者
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Kim Moo
Department Of Chemical Engineering Dong-a University
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Kim Moo
Department Of Mechanical Engineering Pohang University Of Science And Technology
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Nam Ho
Fluid Engineering Division Korea Atomic Energy Research Institute
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Seo Kyung-woo
School Of Environmental Science And Engieering Pohang University Of Science And Technology
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CHA Jae-Eun
Department of Mechanical Engineering, Pohang University of Science and Technology
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AHN Yeh-Chan
Department of Mechanical Engineering, Pohang University of Science and Technology
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CHOI Jong
Fluid Engineering Division, Korea Atomic Energy Research Institute
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Cha Jae-eun
Department Of Mechanical Engineering Pohang University Of Science And Technology
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Ahn Yeh-chan
Department Of Mechanical Engineering Pohang University Of Science And Technology
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Choi Jong
Fluid Engineering Division Korea Atomic Energy Research Institute
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Ahm Yeh-Chan
Department of Mechanical Engineering, Pohang University of Science and Technology
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Kim Moo
Department of Cardiology, Dong-A University Hospital
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