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ЖУРНАЛЫ // Письма в Журнал экспериментальной и теоретической физики // Архив

Письма в ЖЭТФ, 2016, том 103, выпуск 10, страницы 732–736 (Mi jetpl4946)

Эта публикация цитируется в 40 статьях

КОНДЕНСИРОВАННОЕ СОСТОЯНИЕ

The decay of counterflow turbulence in superfluid $^4$He

J. Gaoab, W. Guoab, V. S. L'vovc, A. Pomyalovc, L. Skrbekd, E. Vargad, W. F. Vinene

a National High Magnetic Field Laboratory, 32310 Florida, USA
b Mechanical Engineering Department, Florida State University, 32310 Florida, USA
c Department of Chemical Physics, Weizmann Institute of Science, 76100 Rehovot, Israel
d Faculty of Mathematics and Physics, Charles University, 121 16 Prague, Czech Republic
e School of Physics & Astronomy, University of Birmingham, B15 2TT Birmingham, UK

Аннотация: The letter summarizes recent experiments on thermal counterflow turbulence in superfluid $^4$He, emphasizing the observation of turbulence in the normal fluid and its effect on the decay process when the heat flux is turned off. We argue that what is observed as turbulence in the normal fluid is a novel form of coupled turbulence in the superfluid and normal components, with injection of energy on the scales of both the (large) channel width and the (small) spacing between quantized vortices. Although an understanding of this coupled turbulence remains challenging, a theory of its decay is developed which accounts for the experimental observations.

Поступила в редакцию: 28.04.2016

Язык публикации: английский

DOI: 10.7868/S0370274X16100088


 Англоязычная версия: Journal of Experimental and Theoretical Physics Letters, 2016, 103:10, 648–652

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