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Incompressible Turbulent Flow Reconstruction by the POD technique

Abstract : With this work, we intend to achieve reduced dynamical models for an incompressible turbulent external flow. The model is constructed from a set of particle image velocimetry (PIV) measurements, using the velocity field data obtained in previous experiments. The Proper Orthogonal Decomposition (POD) is as a technique which allows the extraction of the significant modes of a flow. It permits to identify modes without any a priori hypothesis, and these are ordered by their associated level of energy. The POD modes are used to formulate a dynamical system which only contains the main features of the flow, a low order dynamical system(LODS). This is achieved by means of a Galerkin projection of the Navier-Stokes Equations with the goal to obtain a system of ordinary differential equations describing the main aspects of the flow without demanding excessive computational requirements.
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Submitted on : Friday, May 19, 2006 - 9:22:58 PM
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  • HAL Id : inria-00070722, version 1


Juan d'Adamo, Guillermo Artana, Jean-Antoine Desideri. Incompressible Turbulent Flow Reconstruction by the POD technique. [Research Report] RR-5278, INRIA. 2004, pp.21. ⟨inria-00070722⟩



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