Computational Transonic Flutter Solutions for Cranked Wing Planforms

摘要

In the present research a three-dimensional computational aeroelastic simulation for highly-swept and cranked wing planforms is developed. The wing is modeled using nonlinear plate finite elements. The fluid is modeled using the mixed Eulerian-Lagrangian formulation of the classical Euler equations and is discretized using a Galerkin finite element approach on an unstructured tetrahedral mesh. The fluid and structural models are coupled by the Direct Eulearian-Lagrangian method where time synchronization and spatial accuracy are maintained to ensure accurate exchange of energy between the fluid and the structure. Response of two wing models is simulated. Preliminary results are presented.