Journal ArticleDOI
Local investigation of superfluid turbulence
J. Maurer,Patrick Tabeling +1 more
TLDR
In this paper, the authors investigate flows of helium IV driven by two counterrotating disks, in a range of temperatures varying between 1.4 and 2.3 K. The local pressure fluctuations obtained on a small total-head tube are analyzed.Abstract:
We investigate flows of helium IV driven by two counter-rotating disks, in a range of temperatures varying between 1.4 and 2.3 K. The local pressure fluctuations obtained on a small total-head tube are analyzed. Above Tλ, the sensor allows to measure the local velocity fluctuations, and below Tλ, it determines the local fluctuations of a linear combination of the normal and superfluid flow components. Above and below Tλ, Kolmogorov spectra are clearly obtained, with similar Kolmogorov constants. Evidence for persistence of inertial range intermittency in the superfluid region is presented. At all temperatures below Tλ, the structure function exponents are found indistinguishable from those currently observed in normal fluid turbulence.read more
Citations
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Journal ArticleDOI
Cascades and transitions in turbulent flows
TL;DR: In this article, the authors provide a critical summary of recent work on turbulent flows from a unified point of view and present a classification of all known transfer mechanisms, including direct and inverse energy cascades.
Journal ArticleDOI
On the decay of homogeneous isotropic turbulence
L. Skrbek,Steven R. Stalp +1 more
TL;DR: In this article, a phenomenological model based on the three-dimensional turbulent energy spectra was proposed for decomposing homogeneous, isotropic turbulence in the inertial range, where the spectral energy was assumed to be proportional to the wave number to an arbitrary power.
Journal ArticleDOI
Introduction to quantum turbulence
TL;DR: The basic properties of quantum turbulence, systems such as superfluid helium and atomic Bose–Einstein condensates, which are characterized by quantized vorticity, superfluidity, and, at finite temperatures, two-fluid behavior are introduced.
Journal ArticleDOI
Kolmogorov spectrum of superfluid turbulence: numerical analysis of the Gross-Pitaevskii equation with a small-scale dissipation.
TL;DR: The dissipation term is introduced which works only in the scale smaller than the healing length to remove short wavelength excitations which may hinder the cascade process of quantized vortices in the inertial range.
Journal ArticleDOI
Emergence of a turbulent cascade in a quantum gas
TL;DR: The uniform Bose gas is established as a promising new medium for investigating many aspects of turbulence, including the interplay between vortex and wave turbulence, and the relative importance of quantum and classical effects.
References
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BookDOI
Theory Of Quantum Liquids
TL;DR: In this article, the two-fluid model is used to model elementary excitement in He II and the response to a transverse probe is described as a superfluid flow.
Journal ArticleDOI
The theory of quantum liquids
TL;DR: In this paper, the two-fluid model is used to describe the behavior of a superfluid in response to a transverse probe in a two-fluid model.
Journal ArticleDOI
Extended self-similarity in turbulent flows
TL;DR: Extended self-similarity (ESS) holds at high as well as at low Reynolds number, and it is characterized by the same scaling exponents of the velocity differences of fully developed turbulence.
Journal ArticleDOI
Decay of vorticity in homogeneous turbulence.
Michael R. Smith,Michael R. Smith,Michael R. Smith,Russell J. Donnelly,Russell J. Donnelly,Russell J. Donnelly,Nigel Goldenfeld,Nigel Goldenfeld,Nigel Goldenfeld,William Frank Vinen,William Frank Vinen,William Frank Vinen +11 more
TL;DR: Observations of turbulent behavior made without requiring the use of Taylor's frozen turbulence hypothesis, consistent with the notion of a coupled turbulent state of helium II, yield the time dependence of the Kolmogorov microscale.