Caracteristicas no lineales de cuerpos oscilantes en helio superfluido en regimen turbulento.
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Acceso en línea: | http://ricabib.cab.cnea.gov.ar/389/2/JLTPZemmaVers2.pdf |
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I25-R131-3892013-03-22T12:27:33Z Caracteristicas no lineales de cuerpos oscilantes en helio superfluido en regimen turbulento. Turbulent flow around an oscillating body in superfluid helium: dissipation characteristics of the non linear regime. Zemma, Elisa Luzuriaga, Javier Física Quantum fluids Turbulence Turbulencia Superfluid helium Non linear oscillator Vibrating Paddle Critical velocity Velocidad crítica By examining the resonance curves of an oscillator submerged in superfluid liquid helium, it is found that their shape is affected by two distinct dissipation regimes when the amplitude is large enough to generate turbulence in the liquid. In a resonance curve, the central part close to resonance, may be in a turbulent regime, but the response is of much lower amplitude away from the resonance frequency, so that the oscillation can still be in the linear regime for frequencies not exactly at resonance. This introduces an ambiguity in estimating the inverse quality factor Q"-1 of the oscillator. By analyzing experimental data we consider a way of matching the two ways of estimating Q"-1 and use the information to evaluate the frictional force as a function of velocity in a silicon paddle oscillator generating turbulence in the superfluid. Springer Artículo PeerReviewed application/pdf http://ricabib.cab.cnea.gov.ar/389/2/JLTPZemmaVers2.pdf en Zemma, Elisa y Luzuriaga, Javier Caracteristicas no lineales de cuerpos oscilantes en helio superfluido en regimen turbulento. / Turbulent flow around an oscillating body in superfluid helium: dissipation characteristics of the non linear regime. Journal of Low Temperature Physics . (En Prensa) http://ricabib.cab.cnea.gov.ar/389/ |
institution |
Instituto Balseiro |
institution_str |
I-25 |
repository_str |
R-131 |
collection |
Repositorio Institucional Centro Atómico Bariloche e Instituto Balseiro (RICABIB) |
language |
Inglés |
orig_language_str_mv |
en |
topic |
Física Quantum fluids Turbulence Turbulencia Superfluid helium Non linear oscillator Vibrating Paddle Critical velocity Velocidad crítica |
spellingShingle |
Física Quantum fluids Turbulence Turbulencia Superfluid helium Non linear oscillator Vibrating Paddle Critical velocity Velocidad crítica Zemma, Elisa Luzuriaga, Javier Caracteristicas no lineales de cuerpos oscilantes en helio superfluido en regimen turbulento. |
topic_facet |
Física Quantum fluids Turbulence Turbulencia Superfluid helium Non linear oscillator Vibrating Paddle Critical velocity Velocidad crítica |
format |
Artículo PeerReviewed |
author |
Zemma, Elisa Luzuriaga, Javier |
author_facet |
Zemma, Elisa Luzuriaga, Javier |
author_sort |
Zemma, Elisa |
title |
Caracteristicas no lineales de cuerpos oscilantes en helio superfluido en regimen turbulento. |
title_short |
Caracteristicas no lineales de cuerpos oscilantes en helio superfluido en regimen turbulento. |
title_full |
Caracteristicas no lineales de cuerpos oscilantes en helio superfluido en regimen turbulento. |
title_fullStr |
Caracteristicas no lineales de cuerpos oscilantes en helio superfluido en regimen turbulento. |
title_full_unstemmed |
Caracteristicas no lineales de cuerpos oscilantes en helio superfluido en regimen turbulento. |
title_sort |
caracteristicas no lineales de cuerpos oscilantes en helio superfluido en regimen turbulento. |
publisher |
Springer |
url |
http://ricabib.cab.cnea.gov.ar/389/2/JLTPZemmaVers2.pdf |
work_keys_str_mv |
AT zemmaelisa caracteristicasnolinealesdecuerpososcilantesenheliosuperfluidoenregimenturbulento AT luzuriagajavier caracteristicasnolinealesdecuerpososcilantesenheliosuperfluidoenregimenturbulento |
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