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ARTICLE
Turbulent coherent structures in thermal
vortex rings
1
Faculty of Physics, University of Warsaw, Warsaw, Poland
Submission date: 2024-11-30
Final revision date: 2025-05-20
Acceptance date: 2025-07-31
Online publication date: 2025-11-07
Corresponding author
Paweł Jędrejko
Faculty of Physics, University of Warsaw, ul. Krakowskie Przedmieście 26/28, 00-927, Warsaw, Poland
Faculty of Physics, University of Warsaw, ul. Krakowskie Przedmieście 26/28, 00-927, Warsaw, Poland
KEYWORDS
TOPICS
ABSTRACT
The study concerns self-similar structures that emerge during the process of the thermal vortex ring formation. A qualitative explanation of their origin is provided based on the repetitive Kelvin–Helmholtz instability in multiple scales. This phenomenon is found to invert the turbulent energy cascade near the buoyancy interface. To quantify the associated mixing, the fractal dimension of the interface is also computed.
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| eISSN: | 2543-6309 |
| ISSN: | 1429-2955 |
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