Comptes Rendus
no. 1
Use of Proper Orthogonal Decomposition for reconstructing the 3D in-cylinder mean-flow field from PIV data
[Utilisation de la POD pour reconstruire le champ moyen de vitesse 3D à partir de données PIV]

Présenté par : Évariste Sanchez-Palencia

Philippe Druault1  ; Christophe Chaillou1
1 Laboratoire de mécanique physique, université Pierre et Marie Curie – Paris 6, 2, place de la gare de ceinture, 78210 Saint Cyr l'École, France
Comptes Rendus. Mécanique, Volume 335 (2007) no. 1, pp. 42-47.

A partir de mesures PIV du champ de vitesse, une nouvelle application de la snapshot POD est proposée pour reconstruire entièrement le champ moyen de vitesse. Les coefficients POD relatifs au champ moyen sont interpolés dans le domaine d'étude en respectant les propriétés de l'écoulement aux frontières de ce domaine. Connaissant ces coefficients et les fonctions propres POD, le champ de vitesse moyen est alors reconstruit. Une application est proposée à partir de données obtenues dans le cylindre d'un moteur à combustion interne.

Based on PIV measurements obtained in planes along the main flow direction, a snapshot POD based on the full velocity field is performed. The dominant POD coefficients associated to the mean flow, are interpolated in the whole space domain according to boundary flow properties. From the knowledge of these POD coefficients, the entire mean-flow field is reconstructed and a 3D mean-flow representation is obtained. An application is presented using PIV measurements performed in in-cylinder engine flow.

Reçu le :
Accepté le :
Publié le :
DOI : 10.1016/j.crme.2006.11.004
Keywords: Turbulence, Proper Orthogonal Decomposition, PIV, Swirl, In-cylinder flow
Mot clés : Turbulence, Décomposition orthogonale aux valeurs propres, PIV, Structure tourbillonnaire de grande échelle
Philippe Druault 1 ; Christophe Chaillou 1

1 Laboratoire de mécanique physique, université Pierre et Marie Curie – Paris 6, 2, place de la gare de ceinture, 78210 Saint Cyr l'École, France 
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Philippe Druault; Christophe Chaillou. Use of Proper Orthogonal Decomposition for reconstructing the 3D in-cylinder mean-flow field from PIV data. Comptes Rendus. Mécanique, Volume 335 (2007) no. 1, pp. 42-47. doi : 10.1016/j.crme.2006.11.004. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2006.11.004/

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