Low Dimensional Models For Vortex Flow Description

J. D'ADAMO; A. CAMMILLIERI; G. ARTANA

Porto Alegre-Brasil

Workshop; IV Escola de Transicao e Turbulenca; 2004

UFRGS-PUC RS

In this work we describe the application of the Proper Orthogonal Decomposition technique, combined with the Galerkin projection, to model a convected non viscous vortex immersed in an uniform flow. The obtained results show that the reduced model is adequate to describe the dynamics of this kind of flow. An important sensitivity of the long time agreement with the experimental data is significantly influenced by the space and time discretizations. The application of this technique with experimental data issued form PIV should in consequence be carefully analyzed