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1 CAIMAN - Scientific computing, modeling and numerical analysis CRISAM - Inria Sophia Antipolis - Méditerranée , ENPC - École des Ponts ParisTech, CNRS - Centre National de la Recherche Scientifique : UMR6621

Abstract : Numerical simulations of unsteady flows past a flexible structure require the simultaneous solution of structural dynamics and of fluid dynamics on deformable dynamic meshes. We present here an evaluation method of staggered partitioned procedures for time-integrating these focus coupled problems. This method is based on an estimation of the energy that is numerically created at the fluid-structure interface because of staggering. Simplifying assumptions make this estimation easy for a wide family of mixed explicit-implicit or implicit-implicit, synchronous or asynchronous procedures. Insights gained from this evaluation method are confirmed with the analysis of numerical results for the flutter of a flat panel in supersonic airstreams in two and three dimensions and for the transient aeroelastic response of an AGARD 445.6 wing in the transonic regime.

Keywords : STAGGERED PARTITIONED PROCEDURE EVALUATION AND DESIGN CRITERION ENERGY CONSERVATION FLUID-STRUCTURE INTERACTIONS COUPLING ALGORITHM





Autor: Serge Piperno - Charbel Farhat

Fuente: https://hal.archives-ouvertes.fr/



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