Decay of counterflow turbulence in superfluid 4He


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Аннотация

We summarize recent experiments on thermal counterflow turbulence in superfluid 4He, 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.

Авторлар туралы

J. Gao

National High Magnetic Field Laboratory; Mechanical Engineering Department

Email: Victor.Lvov@gmail.com
АҚШ, Tallahassee, Florida, 32310; Tallahassee, Florida, 32310

W. Guo

National High Magnetic Field Laboratory; Mechanical Engineering Department

Email: Victor.Lvov@gmail.com
АҚШ, Tallahassee, Florida, 32310; Tallahassee, Florida, 32310

V. L’vov

Department of Chemical Physics

Хат алмасуға жауапты Автор.
Email: Victor.Lvov@gmail.com
Израиль, Rehovot, 76100

A. Pomyalov

Department of Chemical Physics

Email: Victor.Lvov@gmail.com
Израиль, Rehovot, 76100

L. Skrbek

Faculty of Mathematics and Physics

Email: Victor.Lvov@gmail.com
Чехия, Prague, 12116

E. Varga

Faculty of Mathematics and Physics

Email: Victor.Lvov@gmail.com
Чехия, Prague, 12116

W. Vinen

School of Physics and Astronomy

Email: Victor.Lvov@gmail.com
Ұлыбритания, Birmingham, B15 2TT

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