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Modèle thermoacoustique de l'écoulement moyen à l'intérieur de plaques parallèles et d'un tube cylindrique soumis à l'écoulement oscillant.

Thermoacoustic model for time-averaged flowing streaming within parallel plate and cylindrical tube subjected to oscillating flow.

Auteurs : LI X. M., LUO E. C., YANG M., et al.

Résumé

A thermoacoustic model is presented for analysis of streaming in standing thermoacoustic devices. For accurate analysis, temperature gradient and viscosity in fluid boundary layer can not be overlooked, so the two-dimensional problem (both parallel plate and cylindrical tube geometries) is taken into account in the paper. Second-order time-averaged mass flux and velocity in main resonator, thermal buffer tube and feedback inertance tube of a thermoacoustic device can be calculated based on this model if the longitudinal gradient of mean temperature and acoustic pressure are given. Consequently, the authors can acquire the distribution of Rayleigh streaming in corresponding equipment. In addition, combining with regenerator DC-flow model, the authors can discuss Gedeon streaming in a travelling thermoacoustic device. The paper first presents the establishment of thermoacoustic streaming model, and then gives some calculation samples.

Détails

  • Titre original : Thermoacoustic model for time-averaged flowing streaming within parallel plate and cylindrical tube subjected to oscillating flow.
  • Identifiant de la fiche : 2006-1050
  • Langues : Anglais
  • Source : Cryogenics and refrigeration. Proceedings of ICCR 2003.
  • Date d'édition : 22/04/2003

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