Reduced Order Modelling based on POD Method for 3D Nonlinear Aeroelasticity

Z. Feng and A. Soulaimani (Canada)

Keywords

Aeroelasticity, Reduced order model, Proper orthogonal decomposition, Euler/NavierStokes equations, Unsteady transonic flow, Flutter, moving fluid boundaries.

Abstract

This paper deals with reduced order modelling of a three dimensional nonlinear aeroelasticity system with moving fluid boundaries in transonic flow. The reduced order model with POD method was based on a three-field cou pled full order model, characterized by a moving mesh. It is focused on the fluid model where the most computational load of the coupled model locates. The nonlinear local residual of the full order fluid model was projected onto a POD basis. The reduced order system was resolved by the Newton-GMRES iterative algorithm. Validation of the coupled reduced order model was performed on the aeroe lastic wing AGARD 445.6 subjected to unsteady transonic flow. Numerical simulations shows good agreement of the reduced order model with the full order model.

Important Links:



Go Back