Experimental, numerical and analytical velocity spectra in turbulent quantum fluid
| Autor: | Carlo F. Barenghi, Philippe-E. Roche, Victor S. L'vov |
|---|---|
| Přispěvatelé: | School of Mathematics and Statistics, Newcastle University [Newcastle], Dept Chem. Phys, Weizmann Institute of Science [Rehovot, Israël], Hélium : du fondamental aux applications (HELFA), Institut Néel (NEEL), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), Arc energie Région Rhône-Alpes, EPSRC, ANR, ANR-09-BLAN-0094,SHREK,Superfluide à Haut Reynolds en Ecoulement de von Karman(2009) |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Quantum fluid
[PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn] K-epsilon turbulence model review 47.37.+q 47.27.Gs 67.57.De 01 natural sciences 010305 fluids & plasmas [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] Superfluidity Physics::Fluid Dynamics Inviscid flow 0103 physical sciences Statistical physics [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] 010306 general physics Quantum Turbulence Special Feature Physics Condensed Matter::Quantum Gases Multidisciplinary turbulence quantique Turbulence turbulence Mechanics superfluide Vorticity Vortex [PHYS.COND.CM-GEN]Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other] Superfluid helium-4 |
| Zdroj: | Proceedings of the National Academy of Sciences of the United States of America Proceedings of the National Academy of Sciences of the United States of America, National Academy of Sciences, 2014, 111 (Suppl. 1), pp.4683-4690. ⟨10.1073/pnas.1312548111⟩ |
| ISSN: | 0027-8424 1091-6490 |
| DOI: | 10.1073/pnas.1312548111⟩ |
| Popis: | International audience; Turbulence in superfluid helium is unusual and presents a challenge to fluid dynamicists because it consists of two coupled, inter penetrating turbulent fluids: the first is inviscid with quantised vorticity, 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 o ordinary turbulence. We present experimental, numerical and theoretical results which explain these similarities, and illustrate the limits of our present understanding of superfluid turbulence at smaller scales. |
| Databáze: | OpenAIRE |
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