Efficient procedure for cascade aeroelastic stability determination using nonlinear, time-marching aerodynamic solvers


Journal Article

A numerical eigenvalue problem formulation and a practical calculation procedure for exact eigenvalues and corresponding eigenvectors are developed and applied to a nonlinear, two-dimensional, time-marching full potential solver for cascade aeroelastic stability analysis. This procedure is based on the Lanczos recursive method and it directly calculates stability information about a nonlinear steady state. It is compared to conventional approaches in the frequency and time domains developed earlier and is found to be 100-10.000 times more computationally efficient. Eigenvalue constellations and the flutter results for flow through a cascade SR5 propfan airfoil are presented.

Duke Authors

Cited Authors

  • Mahajan, AJ; Bakhle, MA; Dowell, EH

Published Date

  • January 1, 1993

Published In

Start / End Page

  • 2856 - 2866

International Standard Serial Number (ISSN)

  • 0161-5750

Citation Source

  • Scopus