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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2004, Volume 80, Issue 3, Pages 174–178
(Mi jetpl2069)
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This article is cited in 1 scientific paper (total in 1 paper)
NONLINEAR DYNAMICS
Topological noise scalings in superfluid and classical turbulence
D. Kivotides Low Temperature Laboratory, Helsinki University of Technology,
FIN-02015 HUT, Finland
Abstract:
We calculate the topological noise characterizing the direction of line vortices in superfluid and classical turbulence by finding the intersection of line vortices with square surfaces of edge length $l_s$ positioned normal to three orthogonal axes. In the case of homogeneous superfluid turbulence in thermal counterflow, we find that the noise scales like $l_s$ along the two directions normal to the counterflow and like $l_s^{3/2}$ along the direction parallel to it. In homogeneous isotropic superfluid turbulence at $T\rightarrow 0\,$K, the noise scales like $l_s^{7/4}$. In homogeneous isotropic classical turbulence the scaling is $l_s^{2}$. We offer possible interpretations of the computed scalings, as well as, justification for their differences.
Received: 02.07.2004
Citation:
D. Kivotides, “Topological noise scalings in superfluid and classical turbulence”, Pis'ma v Zh. Èksper. Teoret. Fiz., 80:3 (2004), 174–178; JETP Letters, 80:3 (2004), 152–156
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https://www.mathnet.ru/eng/jetpl2069 https://www.mathnet.ru/eng/jetpl/v80/i3/p174
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Abstract page: | 161 | Full-text PDF : | 58 | References: | 35 |
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