Numéro : 2152 - Year : 1991

On the use of weighting windows in spectral interpolation methods: applications to some hydrodynamic phenomena.

D.R. RAJAONA, LABORATOIRE D'HYDRODYNAMIQUE NAVALE (LHN) -URA 1217 CNRS ECOLE NATIONALE SUPERIEURE DE MECANIQUE (ENSM), Nantes

The mechanisms of error reduction involved in the spectral interpolation methods are studied in order to characterize the spectral behaviour of some quasi periodic phenomena encountered in hydrodynamic field. The effects of three weighting functions are detailed .The performances of e method are shown. Finally , various applications of the method are shown to illustrate the analysis of the dynamic behaviour of bluff bodies in steady or unsteady flows encountered in hydrodynamics.

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