Local and nonlocal dynamics in superfluid turbulence

@article{SherwinRobson2014LocalAN,
  title={Local and nonlocal dynamics in superfluid turbulence},
  author={Lucy Kathleen Sherwin-Robson and Carlo F. Barenghi and Andrew W. Baggaley},
  journal={Physical Review B},
  year={2014},
  volume={91},
  pages={104517}
}
Turbulence in superfluid helium~II is a tangle of quantized vortex lines which interact via the classical Biot-Savart law. We show that vortex tangles with the same vortex line density will have different energy spectra, depending on the normal fluid which feeds energy into the superfluid component, and identify the spectral signature of two forms of superfluid turbulence: Kolmogorov tangles and Vinen tangles. By decomposing the superfluid velocity field into local and nonlocal contributions… 

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