TY - JOUR

T1 - Counterflow energy spectra of quantum turbulence at finite temperatures

AU - Andryushchenko, V. A.

AU - Kondaurova, L. P.

PY - 2017/2/1

Y1 - 2017/2/1

N2 - The spectrum of the energy generated by the vortex tangle in counterflow of normal and superfluid components at different temperatures was obtained. The counterflow magnitude was varied from 0.3 cm/s to 1.2 cm/s and the temperature was varied from 1.3 K to 1.9 K. It was shown that E(k) ∼ k-α at intervortex scale, where 1.3 < α < 1.4 depending on the temperature. At larger scales E(k) ∼ k-1. It was obtained that change of the kinetic energy per unit mass is proportional to the cube of the counterflow of normal and superfluid components at Gorter-Mellink mode, thus the energy dissipation originate from friction between normal component of helium and vortex tangle.

AB - The spectrum of the energy generated by the vortex tangle in counterflow of normal and superfluid components at different temperatures was obtained. The counterflow magnitude was varied from 0.3 cm/s to 1.2 cm/s and the temperature was varied from 1.3 K to 1.9 K. It was shown that E(k) ∼ k-α at intervortex scale, where 1.3 < α < 1.4 depending on the temperature. At larger scales E(k) ∼ k-1. It was obtained that change of the kinetic energy per unit mass is proportional to the cube of the counterflow of normal and superfluid components at Gorter-Mellink mode, thus the energy dissipation originate from friction between normal component of helium and vortex tangle.

KW - Quantum turbulence

KW - Superfluidity

KW - Vortex structure

UR - http://www.scopus.com/inward/record.url?scp=85011879341&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:85011879341

VL - 43

SP - 245

EP - 252

JO - Fizika Nizkikh Temperatur

JF - Fizika Nizkikh Temperatur

SN - 0132-6414

IS - 2

ER -