Transition to quantum turbulence in oscillatory thermal counterflow of He4

2021 ◽  
Vol 103 (13) ◽  
Author(s):  
Š. Midlik ◽  
D. Schmoranzer ◽  
L. Skrbek
Keyword(s):  
Quantum Turbulence ◽  
Thermal Counterflow

Lagrangian accelerations of particles in superfluid turbulence

2013 ◽  
Vol 717 ◽  
Author(s):  
M. La Mantia ◽  
D. Duda ◽  
M. Rotter ◽  
L. Skrbek
Keyword(s):  
Quantum Turbulence ◽  
Fluid Model ◽  
Quantized Vortices ◽  
Superfluid Turbulence ◽  
Thermal Counterflow ◽  
Length Scales ◽  
Order Of Magnitude ◽  
The Mean ◽  
Two Fluid Model ◽  
Two Fluid

AbstractQuantum turbulence in thermal counterflow of superfluid ${\text{} }^{4} \mathrm{He} $ is studied at length scales comparable to the mean distance $\ell $ between quantized vortices. The Lagrangian dynamics of solid deuterium particles, of radius ${R}_{p} $ about one order of magnitude smaller than $\ell $, is analysed in a planar section of the experimental volume by using the particle tracking velocimetry technique. We show that the average amplitude of the acceleration of the particles seems to increase as the temperature decreases and applied heat flux increases and this can be explained by exploiting the two-fluid model of superfluid ${\text{} }^{4} \mathrm{He} $. We also report that, at the probed length scales, the normalized distribution of the acceleration of the particles appears to follow an unexpected classical-like behaviour.

scholarly journals Transition to Quantum Turbulence and Streamwise Inhomogeneity of Vortex Tangle in Thermal Counterflow

2016 ◽  
Vol 187 (5-6) ◽  
pp. 531-537 ◽  
Author(s):  
E. Varga ◽  
S. Babuin ◽  
V. S. L’vov ◽  
A. Pomyalov ◽  
L. Skrbek
Keyword(s):  
Quantum Turbulence ◽  
Thermal Counterflow ◽  
Vortex Tangle

scholarly journals Dissipation of Quantum Turbulence in the Zero Temperature Limit

2007 ◽  
Vol 99 (26) ◽  
Author(s):  
P. M. Walmsley ◽  
A. I. Golov ◽  
H. E. Hall ◽  
A. A. Levchenko ◽  
W. F. Vinen
Keyword(s):  
Quantum Turbulence ◽  
Temperature Limit ◽  
Zero Temperature

Effects of Turbulence in He II Thermal Counterflow

1965 ◽  
Vol 140 (5A) ◽  
pp. A1524-A1528 ◽  
Author(s):  
J. T. Tough ◽  
W. D. McCormick ◽  
J. G. Dash
Keyword(s):  
Thermal Counterflow
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