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This article is cited in 12 scientific papers (total in 12 papers)
CONDENSED MATTER
The superfluid Reynolds number and the transition from potential flow to turbulence in superfluid $^4$He at mK temperatures
W. Schoepe Physics Department, Regensburg University, D-93040 Regensburg, Germany
Abstract:
This comment is on Phys. Rev. Lett. 144, 155302 (2015) by M. T. Reeves, T. P. Billam, B. P. Anderson, and A. S. Bradley “Identifying a superfluid Reynolds number via dynamical similarity” where a new superfluid Reynolds number is introduced. This definition is shown to be useful in the data analysis of the finite lifetime of turbulence observed with an oscillating sphere in superfluid helium at mK temperatures in a small velocity interval $\Delta v =(v-v_c)$ just above the critical velocity $v_c$. The very rapid increase of the lifetime with increasing superfluid Reynolds number is compared with the “supertransient” turbulence observed in classical pipe flow.
Received: 15.06.2015
Citation:
W. Schoepe, “The superfluid Reynolds number and the transition from potential flow to turbulence in superfluid $^4$He at mK temperatures”, Pis'ma v Zh. Èksper. Teoret. Fiz., 102:2 (2015), 117–119; JETP Letters, 102:2 (2015), 105–107
Linking options:
https://www.mathnet.ru/eng/jetpl4686 https://www.mathnet.ru/eng/jetpl/v102/i2/p117
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Abstract page: | 126 | Full-text PDF : | 27 | References: | 31 | First page: | 2 |
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