Spectrum of turbulent Kelvin-waves cascade in superfluid helium

Baggaley, A.W. and Barenghi, C.F. (2011) Spectrum of turbulent Kelvin-waves cascade in superfluid helium. Physical Review B, 83(13), p. 134509. (doi: 10.1103/PhysRevB.83.134509)

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To explain the observed decay of superfluid turbulence at very low temperature, it has been proposed that a cascade of Kelvin waves (analogous to the classical Kolmogorov cascade) transfers kinetic energy to length scales that are small enough that sound can be radiated away. We report results of numerical simulations of the interaction of quantized vortex filaments. We observe the development of the Kelvin-waves cascade, and compute the statistics of the curvature, the amplitude spectrum (which we compare with competing theories), and the fractal dimension.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Baggaley, Dr Andrew
Authors: Baggaley, A.W., and Barenghi, C.F.
College/School:College of Science and Engineering > School of Mathematics and Statistics > Mathematics
Journal Name:Physical Review B
Publisher:American Physical Society

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