Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Real-Time Measurement of Slug Flow Using Electromagnetic Flowmeter with High frequency Triangular Excitation

고주파 삼각파 여자법을 사용한 실시간 슬러그 유동 측정용 전자기유량계

  • 안예찬 (포항공과대학교 대학원 기계공학과) ;
  • 차재은 (포항공과대학교 대학원 기계공학과) ;
  • 김무환 (포항공과대학교 기계공학과)
  • Published : 2002.11.01
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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.

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References

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