Generalized Transonic Unsteady Aerodynamics via Computational-Fluid-Dynamics/Indicial Approach

摘要

In this Note an assessment of the efficiency of the nonlinear indicial function concept considered in conjunction with the computational fluid dynamics toward determination of the transonic unsteady aerodynamic loads for a two-degree-of-freedom airfoil was presented. The excellent agreements with theoretical and computational-fluid-dynamics results demonstrate the capabilities of the nonlinear indicial functions method to determine transonic unsteady aerodynamic loads in both time and frequency domains. In addition, the Note provides a good basis toward approaching in an unified and efficient way problems of open-/closed-loop nonlinear aeroelastic response and flutter instability.