Abstract
Driven by the motivation to understand breakup and coalescence of bubbles in turbulent flows, we experimentally study an idealization of this, namely interaction of an air bubble with a vortex ring in water. This study is carried out at different ring Reynolds numbers (ReΓ) for a fixed ratio of bubble’s volume to ring’s core volume (VR) of about 0.1. The interaction dynamics is governed by a Weber number (We), which is defined here as the ratio of the vortex core’s strength to the Laplace pressure, and has a broad range of about 12–763 in the present study. Several stages of bubble dynamics starting from bubble capture by the ring, to bubble breakup and coalescence are explored using high-speed shadowgraphy technique. Changes in several bubble dynamics aspects such as bubble’s equilibrium position inside a vortex, azimuthal elongation, and breakup pattern(s) are witnessed among low and high Weber number cases, and these are described in the present work.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
