Details

Autor(en) / Beteiligte

• Barenghi, Carlo F.
• L'vov, Victor S.
• Roche, Philippe-E.

Titel

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.