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http://dx.doi.org/10.3795/KSME-B.2002.26.11.1570

A Real-Time Measurement of Slug Flow Using Electromagnetic Flowmeter with High frequency Triangular Excitation  

Ahn, Yeh-Chan (포항공과대학교 대학원 기계공학과)
Cha, Jae-Eun (포항공과대학교 대학원 기계공학과)
Kim, Moo-Hwan (포항공과대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.26, no.11, 2002 , pp. 1570-1577 More about this Journal
Abstract
In order to investigate the characteristics of two-phase slug flow, an electromagnetic flowmeter with 240Hz triangular AC excitation was designed and manufactured. The signals and noise from the flowmeter were obtained, and analyzed in comparison with the observations with a high speed CCD camera. The uncertainty of the flowmeter under single-phase flow was $\pm$ 2.24% in real-time. For two-phase slug flow, electromagnetic flowmeter provided real-time simultaneous measurements of the mean film velocity around Taylor bubble and the relative location and the length of the bubble. Besides, it is an easier and cheaper method for measuring mean film velocity than others such as photochromic dye activation method or particle image velocimetry.
Keywords
Electromagnetic Flowmeter; High Frequency Triangular Excitation; Liquid Film Velocity; Slug Flow; Bubble Location;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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