Leapfrogging Kelvin waves

Niklas Hietala, Risto Hänninen, Hayder Salman, Carlo F. Barenghi

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

5 Sitaatiot (Scopus)
103 Lataukset (Pure)

Abstrakti

Two vortex rings can form a localized configuration whereby they continually pass through one another in an alternating fashion. This phenomenon is called leapfrogging. Using parameters suitable for superfluid helium-4, we describe a recurrence phenomenon that is similar to leapfrogging, which occurs for two coaxial straight vortex filaments with the same Kelvin wave mode. For small-amplitude Kelvin waves we demonstrate that our full Biot-Savart simulations closely follow predictions obtained from a simplified model that provides an analytical approximation developed for nearly parallel vortices. Our results are also relevant to thin-cored helical vortices in classical fluids.
AlkuperäiskieliEnglanti
Artikkeli084501
JulkaisuPhysical Review Fluids
Vuosikerta1
Numero8
DOI - pysyväislinkit
TilaJulkaistu - 5 jouluk. 2016
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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