paper

Energy Spectrum of Superfluid Turbulence without Normal Fluid

arXiv:cond-mat/0201405 · doi:10.1103/PhysRevLett.89.145301

Abstract

The energy spectrum of the superfluid turbulence without the normal fluid is studied numerically under the vortex filament model. Time evolution of the Taylor-Green vortex is calculated under the full nonlocal Biot-Savart law. It is shown that for k<2pi/l, the energy spectrum is very similar to the Kolmogorov's -5/3 law which is the most important statistical property of the conventional turbulence, where k is the wave number of the Fourier component of the velocity field and 1 the average intervortex spacing. The vortex length distribution becomes to obey a scaling property reflecting the self-similarity of the tangle.

4 pages, 5 figures, accepted for publication in Phys. Rev. Lett

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