Baggaley, A.W., Laurie, J. and Barenghi, C.F. (2012) Vortex-density fluctuations, energy spectra, and vortical regions in superfluid turbulence. Physical Review Letters, 109(20), p. 205304. (doi: 10.1103/PhysRevLett.109.205304)
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Abstract
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.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Baggaley, Dr Andrew |
| Authors: | Baggaley, A.W., Laurie, J., and Barenghi, C.F. |
| College/School: | College of Science and Engineering > School of Mathematics and Statistics > Mathematics |
| Journal Name: | Physical Review Letters |
| Publisher: | American Physical Society |
| ISSN: | 0031-9007 |
| Published Online: | 14 November 2012 |
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