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Proceedings 2018, 2(8), 549; https://doi.org/10.3390/ICEM18-05445

Ultrasonic Measurement of Velocity Profile on Bubbly Flow Using a Single Resonant Frequency

1
Department of Mechanical Engineering, Tokyo Institute of Technology, Tokyo 152-8550, Japan
2
Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology, Tokyo 152-8550, Japan
3
Department of Instrumentation and Electronics Engineering, King Mongkut’s University of Technology North Bangkok, Bangkok 10800, Thailand
Presented at the 18th International Conference on Experimental Mechanics (ICEM18), Brussels, Belgium, 1–5 July 2018.
*
Author to whom correspondence should be addressed.
Published: 16 July 2018
PDF [1428 KB, uploaded 3 August 2018]

Abstract

The present paper describes a measurement technique for phase-separated velocity profile measurements in the two-phase bubbly flow. The Ultrasonic Velocity Profiler (UVP) method which is nonintrusive measurement, is applied to obtain an instantaneous velocity profile of liquid and bubble separately by using only one resonant frequency. To achieve this target, developed algorithm, which can decompose frequency component of the Doppler signal affected by liquid and bubble, is applied in the UVP system to obtain and separate instantaneous velocity profile of both phases. For confirming the applicability of modified measurement system, the developed UVP was used for the measurement of the velocity profile in bubbly flow on vertical pipe flow apparatus, the measurement accuracy was validated by UVP Original and Particle Image Velocimetry (PIV) method. Finally, the UVP was applied to experiment for observing velocity distribution of both phases in a bubble column.
Keywords: ultrasonic; velocity profile; bubbly flow; single resonant frequency ultrasonic; velocity profile; bubbly flow; single resonant frequency
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Wongsaroj, W.; Hamdani, A.; Thong-un, N.; Takahashi, H.; Kikura, H. Ultrasonic Measurement of Velocity Profile on Bubbly Flow Using a Single Resonant Frequency. Proceedings 2018, 2, 549.

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