Journal "Computational Technologies"

Article information

2001 , Volume 6, № 6, p.39-46

Kondaurova L.P., Nemirovskii S.K., Nedoboiko M.V.

Numerical simulation of dynamics of single intense second sound waves in superfluid turbulence helium

The paper is devoted to the realization of the "discontinuity decay" method for solution of the differential equations describing the dynamics of intense second sound waves in the superfluid helium. The numerical calculation of the evolution of pulses propagating along channel filled with unperturbed helium is carried out. The results of the dynamics of pulses in various temperature ranges are presented. It is shown that the discontinuities are formed either at the leading front or at the trailing edge of the wave depending on the temperature.

[full text] Classificator Msc2000:

*76A25 Superfluids (classical aspects)

76M10 Finite element methods

82D50 Superfluids

Keywords: quantum mechanics, liquid helium, quantum turbulence, vortex tangle in superfluid turbulence, moderate heat pulses, equation of state

Author(s):
Kondaurova Luiza Petrovna
PhD. , Associate Professor
Position: Senior Research Scientist
Office: SB RAS ThermoPhysics Institute
Address: 630090, Russia, Novosibirsk, ak. Lavrentev avenue, 1
Phone Office: (383) 335 6057
E-mail: theory@itp.nsc.ru

Nemirovskii Sergey Karpovich
Dr. , Senior Scientist
Position: General Scientist
Office: SB RAS ThermoPhysics Institute
Address: 630090, Russia, Novosibirsk, ak. Lavrentev avenue, 1
E-mail: nemir@itp.nsc.ru

Nedoboiko M V
Office: SB RAS ThermoPhysics Institute
Address: Russia, Novosibirsk, Novosibirsk, ak. Lavrentev avenue, 1
E-mail: theory@itp.nsc.ru

Bibliography link:
Kondaurova L.P., Nemirovskii S.K., Nedoboiko M.V. Numerical simulation of dynamics of single intense second sound waves in superfluid turbulence helium // Computational technologies. 2001. V. 6. № 6. P. 39-46