Simultaneous Ultrasound Imaging Velocimetry (UIV) and Flow Visualization in Taylor-Couette flows: Validation of UIV in single-phase flows

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Abstract

Ultrasound Imaging Velocimetry (UIV) is applied to a Taylor-Couette flow, for the case of pure inner cylinder rotation. By imaging a radial-azimuthal plane, two velocity components are obtained simultaneously in a two-dimensional plane. For the single-phase flow studies, Iriodin flakes (commonly used for visualizing flow structures) are used as “flow tracers” for the backscatter of ultrasound. This allows for a simultaneous mapping of the flow regime, via flow visualization, as well as extracting quantitative velocity information in the radial gap. After validating UIV against the analytically well-defined laminar Circular Couette flow as well as turbulent Taylor-Couette flow, other regimes are probed as well, in particular, the Wavy Vortex flow. Finally, the application of UIV to a particle-laden Taylor-Couette flow (particle volume fraction, f_0:01) is considered, under the conditions of oscillatory pure inner cylinder rotation. The results presented here serve as a proof-of-concept for the application of UIV to the Taylor-Couette flow and will be applied to denser particle-laden flows (f _ 0:05) in the future.
Original languageEnglish
Title of host publicationProceedings of the 13th International Symposium on Particle Image Velocimetry (ISPIV 2019)
EditorsChristian J. Kähler, Rainer Hain, Sven Scharnowski, Thomas Fuchs
PublisherUniversitat der Bundeswehr Munchen
Pages980-989
ISBN (Electronic)978-3-943207-39-2
DOIs
Publication statusPublished - 2019
Event13th International Symposium on Particle Image Velocimetry - Munchen, Germany
Duration: 22 Jul 201924 Jul 2019
Conference number: 13

Conference

Conference13th International Symposium on Particle Image Velocimetry
Abbreviated titleISPIV 2019
CountryGermany
CityMunchen
Period22/07/1924/07/19

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