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Computational Aeroelasticity with CFD models


Abstract


This paper gives an overview of the numerical procedures which are nowadays used at Dipartimento di Ingegneria Aerospaziale Politecnico di Milano for computational aeroelasticity by means of complex Computational Fluid Dynamics (CFD) models. Two main research programs are here outlined: the design of a flutter suppression system for the forward swept wing of the in-house aeroelastic demonstrator X-DIA, and the transonic flutter assessment and static aeroelasticity analyses for high-speed aircrafts. Both of them require an accurate and complex fluid models based on Euler or Navier-Stokes equations, to correctly investigate Fluid Structure Interaction (FSI) phenomena. For the first case, an accurate description of the pressure load and the hinge-line moments are required to correctly define control surfaces effectiveness and related viscous effects; for the second case the adoption it is necessary to investigate shock-wave influence on flutter mechanisms and pressure-field to overcome the lack of the classic linearized potential theories in this speed-regime.

Keywords


Computational Fluid Dynamics; Aeroelasticity; Unsteady Aerodynamics; Grid Motion.

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