Fractal dimension of superfluid turbulence.

Kivotides D, Barenghi CF, Samuels DC
Phys Rev Lett. 2001 87 (15): 155301

PMID: 11580706 · DOI:10.1103/PhysRevLett.87.155301

Superfluid turbulence consists of a disordered tangle of quantized vortex filaments which interact with each other and with the normal fluid. We develop a kinematic model of normal-fluid turbulence to study superfluid vortex tangles at finite temperatures and show by numerical simulation that the system of filaments has a fractal dimension larger than one. We find that the fractal dimension is directly related to the vortex-line density and is independent of temperature over a wide range.

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