TY - GEN
T1 - Simultaneous Ultrasound Imaging Velocimetry (UIV) and Flow Visualization in Taylor-Couette flows
T2 - 13th International Symposium on Particle Image Velocimetry
AU - Dash, Amitosh
AU - Anantharaman, Arjun
AU - Greidanus, Arnoud
AU - Poelma, Christian
N1 - Conference code: 13
PY - 2019
Y1 - 2019
N2 - 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.
AB - 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.
U2 - 10.18726/2019_3
DO - 10.18726/2019_3
M3 - Conference contribution
SP - 980
EP - 989
BT - Proceedings of the 13th International Symposium on Particle Image Velocimetry (ISPIV 2019)
A2 - Kähler, Christian J.
A2 - Hain, Rainer
A2 - Scharnowski, Sven
A2 - Fuchs, Thomas
PB - Universitat der Bundeswehr Munchen
Y2 - 22 July 2019 through 24 July 2019
ER -