期刊
PHYSICAL REVIEW LETTERS
卷 109, 期 20, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.205304
关键词
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资金
- Leverhulme Trust [F/00 125/AH, F/00 125/AD]
- ANR [ANR-09-SYSC-014]
- EPSRC [EP/I019413/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/I019413/1] Funding Source: researchfish
Measurements of the energy spectrum and of the vortex-density fluctuation spectrum in superfluid turbulence seem to contradict each other. Using a numerical model, we show that at each instance of time the total vortex line density can be decomposed into two parts: one formed by metastable bundles of coherent vortices, and one in which the vortices are randomly oriented. We show that the former is responsible for the observed Kolmogorov energy spectrum, and the latter for the spectrum of the vortex line density fluctuations.
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