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Simulation des Grandes Échelles d'écoulements turbulentscompressibles dans des conduits courbes : étude des transferts thermiques

Published online by Cambridge University Press:  01 July 2005

Cécile Münch
Affiliation:
L.E.G.I./MOST, BP 53, 38041 Grenoble Cedex 09, France
Olivier Métais
Affiliation:
L.E.G.I./MOST, BP 53, 38041 Grenoble Cedex 09, France
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Abstract

Nous présentons des Simulations des Grandes Échelles d'écoulements turbulentscompressibles tridimensionnels se développant dans des conduits courbes de section rectangulaire. Ces écoulements sont caractériséspar la présence de flux secondaires intenses et de structures turbulentes responsables des transferts de masse et thermique. Le but est ici d'évaluer l'influence du rapport d'aspect de la section sur ce type d'écoulements. Les résultats montrent que ce paramètre modifie l'intensité et la localisation destourbillons et donc indirectement le transfert de chaleur lorsqu'un chauffage est appliqué sur la paroi convexe.

Type
Research Article
Copyright
© AFM, EDP Sciences, 2005

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