Aeroelastic Prediction of Discrete Gust Loads Using Nonlinear and Time-Linearized CFD-Methods
Mark Förster, Christian Breitsamter
Abstract
The time-linearized finite volume Navier-Stokes solver AER-SDNS is augmented by a discrete gust model.
With AER-SDNS, complex Generalized Aerodynamic Forces (GAFs) are computed very efficiently in the frequency domain, while preserving the full
Computational Fluid Dynamics (CFD) quality of the results.
Finally, various aeroelastic gust responses are determined by solving a linear state space model.
The results are compared to gust responses by means of an artificial velocity gust model and a strongly coupled, time domain, aeroelastic
method.
As test case, the small aspect ratio, swept AGARD 445.6 wing is deployed.
Additionally, a stability analysis is conducted in order to validate both methods with experimental data.
With AER-SDNS, complex Generalized Aerodynamic Forces (GAFs) are computed very efficiently in the frequency domain, while preserving the full
Computational Fluid Dynamics (CFD) quality of the results.
Finally, various aeroelastic gust responses are determined by solving a linear state space model.
The results are compared to gust responses by means of an artificial velocity gust model and a strongly coupled, time domain, aeroelastic
method.
As test case, the small aspect ratio, swept AGARD 445.6 wing is deployed.
Additionally, a stability analysis is conducted in order to validate both methods with experimental data.
Full Text: PDF
ISSN 1974-5117