Phys. Rev. Lett. 73, 1793 - 1796 (1994)Absorption of Sound by Vortex Filaments |
PRL Celebrates 50 Years
This Week's Milestone Letters are from 1981: |
Sergey V. Nazarenko *
Landau Institute for Theoretical Physics, Kosygyn 2, Moscow, 117334, Russia
Received 7 March 1994
The effect of an acoustic wave packet falling onto a thin 3D filament of vorticity is identified and analyzed. The wavelength of sound decreases to zero in a finite time in such a process. Therefore, even if viscosity is small the wave packets will reach the scales of strong viscous dissipation and get absorbed, transferring their energy to the thermal energy of the compressible vortex flow. The cross section of the sound absorption by multiple vortex filaments having an arbitrary 3D shape is derived. Applications to the theory of the second sound attenuation in He II are discussed.
©1994 The American Physical Society
URL: http://link.aps.org/abstract/PRL/v73/p1793
DOI: 10.1103/PhysRevLett.73.1793
PACS: 43.20.+g, 47.27.-i
* Present address: Department of Mathematics, University of Arizona, Bldg. 89, Tucson, AZ 85721.
See Also
Comment: E. B. Sonin, Comment on “Absorption of Sound by Vortex Filaments”, Phys. Rev. Lett. 75, 1867 (1995)
Reply: Sergey V. Nazarenko, Nazarenko Replies:, Phys. Rev. Lett. 75, 1868 (1995)
[ Abstract | Previous article | Next article | Issue 13 ]
About PROLA | Terms and Conditions | Subscriptions | Search | Help
Content in PROLA © 2008 by The American Physical Society All rights reserved. PROLA™ is a trademark of The American Physical Society. Use of APS online journals implies that the user has read and agrees to the Terms and Conditions in the Subscription Agreement.