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Positron emission particle tracking in pulsatile flow

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Abstract

Positron emission particle tracking (PEPT) is increasingly used to understand the flow characteristics in complex systems. This research utilizes PEPT to measure pulsatile flow of frequency 2.1 Hz in an elastic Masterkleer PVC tube of 19 mm inner diameter and 3.2 mm wall thickness. Anion exchange resin beads are labeled with 18F and delivered to a pump driven flow loop with motorized ball valve used to develop the pulsatile flow. Data are collected in the tube with circular cross section, and measurements are also collected with a section of the tube pinched. Nominal flow velocities are near 1 m/s and Reynolds numbers near 20,000. Many thousand PEPT particle traces are collected and synchronized with the flow pulsation. These Lagrangian data are presented as a series of 20 still frames depicting the 3-D velocity field present during each phase of the flow pulsation. Pressure data are also collected to resolve the pressure wave front moving through the open elastic tube at velocity 15.2 m/s.

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Notes

  1. MATLAB R2015a and R2016a (MathWorks, Inc., Natick, MA, 2015 and 2016).

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Acknowledgements

The authors appreciate NNSA Stewardship Sciences Academic Programs (SSAP) for supporting this research. This material is based upon work supported under an Integrated University Program Graduate Fellowship. The authors thank Alan Stuckey of University of Tennessee Medical Center for providing the 18F used in these experiments and Howard Cyr for giving us access to Mastersizer 3000 laser particle size analyzer.

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Authors and Affiliations

  1. Department of Nuclear Engineering, University of Tennessee-Knoxville, 315 Pasqua Nuclear Engineering, Knoxville, TN, 37996, USA

    Nitant Patel & Arthur Ruggles

  2. Department of Physics and Astronomy, University of Tennessee-Knoxville, 401 Nielsen Physics Building, Knoxville, TN, 37996, USA

    Cody Wiggins

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  1. Nitant Patel
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  2. Cody Wiggins
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Correspondence to Nitant Patel.

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Patel, N., Wiggins, C. & Ruggles, A. Positron emission particle tracking in pulsatile flow. Exp Fluids 58, 42 (2017). https://doi.org/10.1007/s00348-017-2330-1

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