Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Experimental, numerical, and analytical velocity spectra in turbulent quantum fluid
Ist Teil von
Proceedings of the National Academy of Sciences - PNAS, 2014-03, Vol.111 (Supplement 1), p.4683-4690
Ort / Verlag
United States: National Academy of Sciences
Erscheinungsjahr
2014
Quelle
EZB Electronic Journals Library
Beschreibungen/Notizen
Turbulence in superfluid helium is unusual and presents a challenge to fluid dynamicists because it consists of two coupled, interpenetrating turbulent fluids: the first is inviscid with quantized vorticity, and the second is viscous with continuous vorticity. Despite this double nature, the observed spectra of the superfluid turbulent velocity at sufficiently large length scales are similar to those of ordinary turbulence. We present experimental, numerical, and theoretical results that explain these similarities, and illustrate the limits of our present understanding of superfluid turbulence at smaller scales.