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Localized Particle Velocity and Concentration Measurement in Slurry Flow Using Ultrasound Technique

[+] Author Affiliations
Mohamed Garman, William Globoke, Jaikrishnan Kadambi

Case Western Reserve University, Cleveland, OH

John M. Furlan, Robert J. Visintainer

GIW Industries, Inc., Grovetown, GA

Michael Hoelling

ForWind - Center for Wind Energy Research, Oldenburg, Germany

Paper No. FEDSM2013-16024, pp. V01CT20A001; 10 pages
doi:10.1115/FEDSM2013-16024
From:
  • ASME 2013 Fluids Engineering Division Summer Meeting
  • Volume 1C, Symposia: Gas-Liquid Two-Phase Flows; Industrial and Environmental Applications of Fluid Mechanics; Issues and Perspectives in Automotive Flows; Liquid-Solids Flows; Multiscale Methods for Multiphase Flow; Noninvasive Measurements in Single and Multiphase Flows; Numerical Methods for Multiphase Flow; Transport Phenomena in Energy Conversion From Clean and Sustainable Resources; Transport Phenomena in Materials Processing and Manufacturing Processes; Transport Phenomena in Mixing; Turbulent Flows: Issues and Perspectives
  • Incline Village, Nevada, USA, July 7–11, 2013
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-5556-0
  • Copyright © 2013 by ASME

abstract

The study of slurry flow is important in the analysis and design of transport equipment that is resistant to solid particle erosion. Ultrasound transducers have been used to track particle concentration and particle velocity profiles across a representative pipe slurry flow.

The aim of this work is to measure local particle concentration using an A-scan measuring technique and to utilize pulsed ultrasound Doppler Velocimetry (PUDV), which is a non-invasive flow measurement technique for both opaque and transparent fluids, to measure fluid velocity profiles and to determine the most appropriate setup for PUDV to measure the velocity profiles (i.e. transducer frequency, Doppler angle, transducer dimension). The PUDV will then obtain velocity measurements in a slurry pump. The effect of varying PUDV settings is also studied, and is found to generally be small.

Computational fluid dynamics (CFD) modeling was performed. The numerical results were in good agreement with the experimental data, for both the local particle velocity and concentration. It has been found that the transducer with 80 degree Doppler angle and a large sized (14mm diameter) transducer give the best results for the local particle velocity measurements. These results will be considered as an introduction to use them as a guide for measuring the velocity profiles in the pump casing.

Copyright © 2013 by ASME

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