Title: Searching for Transonic Aeroelastic Instability Using an Aerodynamic Model Hierarchy
Abstract:A hierarchy of flow models is exploited for transonic aeroelastic stability analysis using the kriging interpolation technique applied within the Schur complement eigenvalue framework. In the Schur fr...A hierarchy of flow models is exploited for transonic aeroelastic stability analysis using the kriging interpolation technique applied within the Schur complement eigenvalue framework. In the Schur framework a modified structural eigenvalue problem describes the coupled aeroelastic system with a pre–computed interaction term depending on the response frequency. The interaction term, representing the influence of the high–dimensional computational fluid dynamics system, is approximated by reconstruction based on samples which can be computed using a frequency or time domain solver. The computationally cheap approximation model is developed and discussed in this paper for two degree–of– freedom aerofoil cases. Also, the approximation model is used both for blind search of aeroelastic instability and for updating predictions based on aerodynamic models of different fidelity.Read More
Publication Year: 2010
Publication Date: 2010-04-12
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 14
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