Polygonal instabilities on interfacial vorticities

Polygonal instabilities on interfacial vorticities

We report the results of a theoretical investigation of the stability of a toroidal vortex bound by an interface. Two distinct instability mechanisms are identified that rely on, respectively, surface tension and fluid inertia, either of which may prompt the transformation from a circular to a polyg...

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Veröffentlicht in:The European physical journal. E, Soft matter and biological physics Soft matter and biological physics, 2015-10, Vol.38 (10), p.113-113, Article 113
Hauptverfasser: Labousse, M., Bush, J. W. M.
Format: Artikel
Sprache:eng
Schlagworte:
Biological and Medical Physics
Biophysics
Complex Fluids and Microfluidics
Complex Systems
Fluid mechanics
Mechanics
Nanotechnology
Physics
Physics and Astronomy
Polymer Sciences
Regular Article
Soft and Granular Matter
Surfaces and Interfaces
Thin Films
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Beschreibung
Zusammenfassung:We report the results of a theoretical investigation of the stability of a toroidal vortex bound by an interface. Two distinct instability mechanisms are identified that rely on, respectively, surface tension and fluid inertia, either of which may prompt the transformation from a circular to a polygonal torus. Our results are discussed in the context of three experiments, a toroidal vortex ring, the hydraulic jump, and the hydraulic bump. Graphical abstract
ISSN:1292-8941
1292-895X
DOI:10.1140/epje/i2015-15113-5