TY - JOUR

T1 - Collapsing vortex filaments and the spectrum of quantum turbulence

AU - Andryushchenko, V. A.

AU - Nemirovskii, S. K.

PY - 2017/1/1

Y1 - 2017/1/1

N2 - With the use of the method of correlation functions and of the method of quantum vortices configurations, the energy spectrum of the three-dimensional velocity field induced by collapsing (immediately before the implementation reconnection) vortex filaments is calculated. Statement of the problem is motivated by the idea of modeling the classical turbulence by set of chaotic quantized vortex filaments. Among the various arguments, supporting the idea of quasi-classical behavior of quantum turbulence, the strongest is the realization of the Kolmogorov spectrum of type E(k) k-5/3, resulting in a number of numerical operations. Another goal is connected with an important and intensively discussed topic on the role of hydrodynamic collapse in the formation of turbulence spectra. As a result of calculations it was demonstrated that the vortex filament at the moment of contact create a velocity field having a singularity. This configuration a of vortex filaments generates spectrum E(k), close to the Kolmogorov law. A possible cause of this fact, as well as the likely reason for deviation are discussed. The results are discussed from the point of view of both the classical and quantum turbulence.

AB - With the use of the method of correlation functions and of the method of quantum vortices configurations, the energy spectrum of the three-dimensional velocity field induced by collapsing (immediately before the implementation reconnection) vortex filaments is calculated. Statement of the problem is motivated by the idea of modeling the classical turbulence by set of chaotic quantized vortex filaments. Among the various arguments, supporting the idea of quasi-classical behavior of quantum turbulence, the strongest is the realization of the Kolmogorov spectrum of type E(k) k-5/3, resulting in a number of numerical operations. Another goal is connected with an important and intensively discussed topic on the role of hydrodynamic collapse in the formation of turbulence spectra. As a result of calculations it was demonstrated that the vortex filament at the moment of contact create a velocity field having a singularity. This configuration a of vortex filaments generates spectrum E(k), close to the Kolmogorov law. A possible cause of this fact, as well as the likely reason for deviation are discussed. The results are discussed from the point of view of both the classical and quantum turbulence.

KW - Hydrodynamic collapse

KW - Quantum vortex line

UR - http://www.scopus.com/inward/record.url?scp=85007039309&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:85007039309

VL - 43

SP - 150

EP - 159

JO - Fizika Nizkikh Temperatur

JF - Fizika Nizkikh Temperatur

SN - 0132-6414

IS - 1

ER -