An Experimental Study of Different Signal Processing Methods on Ultrasonic Velocity Profiles in a Single Phase Flow

  • Natee Thong-un King Mongkut University of Technology North Bangkok
  • Wongsakorn Wongsaroj Tokyo Institute of Technology
  • Weerachon Treenuson Office of Atoms for Peace, Ministry of Science and Technology, Thailand
  • Jirasak Chanwutitum King Mongkut’s University of Technology North Bangkok
  • Hiroshige Kikura Tokyo Institute of Technology

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Abstract

Ultrasonic velocity profile (UVP) measurement methods have been continuously developed in the field of engineering. A UVP can visualize a fluid flow along a benchmark line. This provides a significant advantage over other conventional methods such as differential pressure, turbine, and vortex. This paper presents an experimental study of using different signal processing methods including autocorrelation (AC), fast Fourier transform (FFT), maximum likelihood estimation (MLE), multiple signal classification (MUSIC), and Estimation of signal parameter via rotational invariance technique (ESPRIT) under diverse situations as the number of pulse repetitions (Nprf), frequency of repetitions (fprf), velocity profiles, computation – time requirements and flowrates. Experimental results express that there is an optimal number and frequency of pulse repetitions for each signal processing method that depended on fprf, Nprf, and flowrate. Moreover, computation-time and statistical tests were verified from experimental results. From the comparisons, MLE was experimentally the best algorithm even though the trade-off of moderate computation-time requirements was realized. However, considering the optimization of both accuracy and computation-time consumption, MLE was determined as the preferred signal processing method based on UVP for estimating flowrate in existing water reactors.  

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Author Biographies
Natee Thong-un

Department of Instrumentation and Electronics Engineering, Faculty of Engineering, King Mongkut’s University of Technology North Bangkok, Bangkok 10800, Thailand

Wongsakorn Wongsaroj

Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology, Tokyo 152-8550, Japan

Weerachon Treenuson

Office of Atoms for Peace, Ministry of Science and Technology, Bangkok 10900, Thailand

Jirasak Chanwutitum

Department of Instrumentation and Electronics Engineering, Faculty of Engineering, King Mongkut’s University of Technology North Bangkok, Bangkok 10800, Thailand

Hiroshige Kikura

Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology, Tokyo 152-8550, Japan

Published
Vol 22 No 3, Jun 28, 2018
How to Cite
N. Thong-un, W. Wongsaroj, W. Treenuson, J. Chanwutitum, and H. Kikura, “An Experimental Study of Different Signal Processing Methods on Ultrasonic Velocity Profiles in a Single Phase Flow”, Eng. J., vol. 22, no. 3, pp. 123-142, Jun. 2018.

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