Partager

Document IIF

Simulation numérique de l'écoulement oscillatoire dans un matelas thermoacoustique.

Numerical simulation of oscillatory flow in a thermoacoustic stack.

Auteurs : SALEH Y. M., MAO X. R., JAWORSKI A. J.

Résumé

The thermoacoustic stack is considered to be the heart of standing wave thermoacoustic systems. The flow at the end of the stack plates is complex and is dominated by concentrated eddies at high drive ratios, which affect flow motion, heat transfer, and the performance of the thermoacoustic device. In this paper, the oscillatory flow in the thermoacoustic stack is studied numerically using a commercial CFD package FLUENT 6.1. In this work, the stack is modelled as a set of 2-D isothermal flat plates, with no heat exchangers. Two drive ratios are used: 0.3 and 1.0%. The numerical results are compared with the experimental data and predict the so-called vortex "leap-frogging" and vortex shedding phenomena. A very good agreement is found. This work is a step towards understanding and mapping out the behaviour of the flows induced by thermoacoustic effects, which is essential to reach the optimal performance of thermoacoustic devices.

Documents disponibles

Format PDF

Pages : ICR07-A1-278

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Numerical simulation of oscillatory flow in a thermoacoustic stack.
  • Identifiant de la fiche : 2007-2406
  • Langues : Anglais
  • Source : ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Date d'édition : 21/08/2007

Liens


Voir d'autres communications du même compte rendu (839)
Voir le compte rendu de la conférence

Indexation