[Simulation numérique de la vitesse moyenne près d'une plaque de l'empilement d'un réfrigérateur thermoacoustique.]
Le champ de vitesse moyen à proximité d'une plaque appartenant à l'empilement d'un réfrigérateur thermoacoustique a été calculé numériquement par une simulation directe des équations de Navier–Stokes. Deux zones ont pu être distinguées. Dans la première, située aux extrémités de la plaque, le champ de vitesse moyen est vortical et résulte de la transition plaque/résonateur. Dans la seconde, située au-dessus de la plaque, le mouvement moyen est de type « acoustic streaming » et résulte de l'interaction entre l'onde acoustique et la surface de la plaque. L'influence de la distance inter-plaques dans l'empilement sur la forme de ce mouvement est étudiée.
A numerical simulation of the unsteady flow above one stack plate in a thermoacoustic refrigerator was performed. The second order mean velocity field was computed. Two regions could be distinguished. In the first region, located at the plate extremities, the mean flow is essentially vortical and results from the resonator/plate transition. In the second region, located above the plate, the mean velocity field corresponds to a streaming flow which results from the interaction of the acoustic wave with the plate boundaries. The effects of stack plates spacing on the streaming flow pattern is studied.
Accepté le :
Publié le :
Mots-clés : Mécanique des fluides numérique, Thermoacoustique, Streaming, Simulation numérique
David Marx 1 ; Philippe Blanc-Benon 1
@article{CRMECA_2004__332_11_867_0,
author = {David Marx and Philippe Blanc-Benon},
title = {Computation of the mean velocity field above a stack plate in a thermoacoustic refrigerator},
journal = {Comptes Rendus. M\'ecanique},
pages = {867--874},
publisher = {Elsevier},
volume = {332},
number = {11},
year = {2004},
doi = {10.1016/j.crme.2004.07.010},
language = {en},
}
TY - JOUR AU - David Marx AU - Philippe Blanc-Benon TI - Computation of the mean velocity field above a stack plate in a thermoacoustic refrigerator JO - Comptes Rendus. Mécanique PY - 2004 SP - 867 EP - 874 VL - 332 IS - 11 PB - Elsevier DO - 10.1016/j.crme.2004.07.010 LA - en ID - CRMECA_2004__332_11_867_0 ER -
David Marx; Philippe Blanc-Benon. Computation of the mean velocity field above a stack plate in a thermoacoustic refrigerator. Comptes Rendus. Mécanique, Volume 332 (2004) no. 11, pp. 867-874. doi : 10.1016/j.crme.2004.07.010. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2004.07.010/
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