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

Proceedings

Takahashi, Hideharu¹  Thong-un, Natee²  Wongsaroj, Wongsakorn³  Hamdani, Ari⁴  Kikura, Hiroshige⁵ 

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

关键词: ultrasonic;    velocity profile;    bubbly flow;    single resonant frequency;   

DOI  :  10.3390/ICEM18-05445

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY