Acoustic Turbulence in Superfluid 4He.

Efimov, V. B. and Ganshin, A. N. and Kolmakov, G. V. and McClintock, P. V. E. and Mezhov-Deglin, L. P. (2009) Acoustic Turbulence in Superfluid 4He. Journal of Low Temperature Physics, 156 (3-6). pp. 95-115. ISSN 0022-2291

[thumbnail of jltp09reviewMay25PostPrint]
PDF (jltp09reviewMay25PostPrint)
jltp09reviewMay25PostPrint.pdf - Accepted Version

Download (880kB)


Recent work on nonlinear second sound wave propagation and acoustic turbulence in superfluid 4He is reviewed. Observations of direct and inverse turbulent energy cascades are described. The direct cascade arises due to the huge nonlinear dependence of the second sound wave velocity on its amplitude. The flux of energy injected at the driving frequency is transformed via successively higher harmonics until it is eventually attenuated by viscous dissipation at the short wavelength edge of the spectrum. The onset of the inverse cascade occurs above a critical driving energy density, and it is accompanied by giant waves that constitute an acoustic analogue of the rogue waves that occasionally appear on the surface of the ocean. The theory of the phenomena is outlined and shown to be in good agreement with the experiments.

Item Type:
Journal Article
Journal or Publication Title:
Journal of Low Temperature Physics
Additional Information:
The final publication is available at Springer via
Uncontrolled Keywords:
?? wave turbulencesuperfluid 4hesecond soundenergy cascadematerials science(all)atomic and molecular physics, and opticscondensed matter physicsqc physics ??
ID Code:
Deposited On:
07 Jan 2010 10:06
Last Modified:
28 Jun 2024 23:24