Quantitative visualization of swirl and cloud bubbles in Taylor–Couette flow
Langue
en
Article de revue
Ce document a été publié dans
Journal of Visualization. 2017-05, vol. 20, n° 2, p. 349-358
Springer
Résumé en anglais
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 ...Lire la suite >
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.< Réduire
Mots clés en anglais
Bubbly Taylor–Couette
Flow visualization
Algorithm
Discrimination
Origine
Importé de halUnités de recherche