Wavelet Analysis of the Turbulent LES Data of the Lid-Driven Cavity Flow

Roland Bouffanais (1) , Guy Courbebaisse (2) , Laurent Navarro (3) , Michel O. Deville (4)

1 MIT - Massachusetts Institute of Technology
2 CREATIS - Centre de Recherche et d'Application en Traitement de l'Image et du Signal
3 CIS-ENSMSE - Centre Ingénierie et Santé
4 STI-IGM-LIN - Sciences et Techniques de L'Ingénieur Institue de Génie Mécanique Laboratoire Ingénierie Numérique

Both Fourier and wavelet transforms are performed on data obtained from large-eddy simulations of the turbulent flow in a lid-driven cubical cavity. The analyzed data or synthetic signals are picked at three specific points inside the cavity allowing to investigate three regimes over time: laminar, transitional and turbulent. The main objective of this study is to generate and analyze synthetic signals in order to confirm the correlation between the computed physical quantities and those expected theoretically.

Mots clés: Wavelet Analysis; Lid-Driven Cavity Flow; turbulent flow; laminar regime; transitional regime; turbulent regime; data simumation; large-eddy simulation

Domaines: Traitement du signal et de l'image [eess.SP]; Mécanique des fluides [physics.class-ph]; Mécanique des fluides [physics.class-ph]; Traitement du signal et de l'image [eess.SP]

Roland Bouffanais, Guy Courbebaisse, Laurent Navarro, Michel O. Deville. Wavelet Analysis of the Turbulent LES Data of the Lid-Driven Cavity Flow. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 2010, 110, pp.87-94. ⟨10.1007/978-3-642-14139-3_10⟩. ⟨hal-00550373⟩