Inter- grid Transfer Influence on Transonic Flutter Predictions

Computational Aeroelasticity requires a method to transfer displacements and forces between the fluid and structural grids. Several popular transformation methods are evaluated with respect to their sectional shape reconstruction properties, and the impact of these on flutter predictions. The test cases used are the Goland wing and a model commercial jet wing. The flutter predictions are computed using a fast eigenvalue tracing method. An approach to transformation for beam models is proposed based on defining additional information about the ribs to guide the choice of rigid sections.

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