A linearized method for the frequency analysis of three-dimensional fluid/structure interaction problems in all flow regimes

摘要

ew present a computational fluid dynamics (CFD)-based linearized method for the frequency analysis of three-dimensional fluid/ structure interaction problems. This method is valid in the subsonic, transonic, and supersonic flow regimes, and is insensitive to the frequency or damping level of the sought-after coupled eigenmodes. It is based on the solution by an orthogonal iteration procedure of a complex eigenvalue problem derived from the linearization of a three-field fluid/structure/moving mesh formulation.