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Erschienen in:

22.09.2016 | Regular Paper

Quantitative visualization of swirl and cloud bubbles in Taylor–Couette flow

verfasst von: Bruno van Ruymbeke, Yuichi Murai, Yuji Tasaka, Yoshihiko Oishi, Céline Gabillet, Catherine Colin, Noureddine Latrache

Erschienen in: Journal of Visualization | Ausgabe 2/2017

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Abstract

We develop a novel method to study the gas phase features in a bubbly Taylor–Couette flow when bubbles are arranged as elevated toroidal strings. The flow is recorded in the front view plane with a high-speed camera for a Reynolds number of 1500 and a global void fraction of 0.14 %. An image processing algorithm is developed to discriminate bubbles accumulated in clouds near the inner cylinder (cloud bubbles) from bubbles trapped in the bulk flow by vortices (swirl bubbles). The analysis of the preferential positions, azimuthal velocities, and equivalent void fraction of clouds and swirl bubbles separately provides a new insight into the dynamics of the bubble’s entrapment.

Graphical Abstract

Vorheriger Artikel Experimental investigation of the effect of control rod guide tubes on the breakup of a molten metal jet in the lower plenum of a boiling water reactor under isothermal conditions

Nächster Artikel High-speed visualization of acoustically excited cavitation bubbles in a cluster near a rigid boundary

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Titel: Quantitative visualization of swirl and cloud bubbles in Taylor–Couette flow
verfasst von: Bruno van Ruymbeke
Yuichi Murai
Yuji Tasaka
Yoshihiko Oishi
Céline Gabillet
Catherine Colin
Noureddine Latrache
Publikationsdatum: 22.09.2016
Verlag: Springer Berlin Heidelberg
Erschienen in: Journal of Visualization / Ausgabe 2/2017
Print ISSN: 1343-8875
Elektronische ISSN: 1875-8975
DOI: https://doi.org/10.1007/s12650-016-0391-5

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