caa a22 4500 445365730 CHVBK 20180317142929.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s10909-010-0252-x doi (NATIONALLICENCE)springer-10.1007/s10909-010-0252-x Nemirovskii Sergey Institute of Thermophysics, 630090, Novosibirsk, Russia aut Propagation of a Turbulent Fronts in Quantum Fluids [Elektronische Daten] [Sergey Nemirovskii] This paper is part of our series of studies on the dynamics of inhomogeneous vortex tangles. We consider here the motion of turbulent fronts. There are a number of experiments in which the authors observed the development of superfluid turbulence in quantum fluids in the form of propagating fronts. There are also experiments in which the authors observed the appearance of the moving structures ("plugs”), regions with the high vortex line density in the counterflowing superfluid helium. These phenomena have both scientific and applied interest. For example, the possibility of spontaneous formation of "plugs” can radically affect heat transfer in channels with superfluid helium, which is used as a refrigerant for cooling superconducting devices. There are a number of hypotheses for how the fronts and "plugs” appear and what their dynamics are, in particular, how to evaluate the velocity of propagations. In the present work we elaborate the approach of the combustion-like propagation of the superfluid turbulent domain. A key assumption is that propagation of the front occurs in diffusion manner of diffusion with the source of the vortices behind the front, just like the combustion process. Additionally, there is a drift motion of the vortex tangles due to polarization of the vortex loops. Interplay of these effects determines the speed of the turbulent front propagation. We performed a comparison with the experimental data. Springer Science+Business Media, LLC, 2010 Superfluid turbulence nationallicence Quantum vortices nationallicence Nonuniform vortex tangle nationallicence Journal of Low Temperature Physics Springer US; http://www.springer-ny.com 162/3-4(2011-02-01), 347-353 0022-2291 162:3-4<347 2011 162 10909 https://doi.org/10.1007/s10909-010-0252-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10909-010-0252-x text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Nemirovskii Sergey Institute of Thermophysics, 630090, Novosibirsk, Russia aut NATIONALLICENCE 773 0- Journal of Low Temperature Physics Springer US; http://www.springer-ny.com 162/3-4(2011-02-01), 347-353 0022-2291 162:3-4<347 2011 162 10909 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer