Eigenmode analysis in unsteady aerodynamics: Reduced order models


Journal Article

A conceptually novel and computationally efficient technique for computing unsteady flow about isolated airfoils, wings, and turbomachinery cascades is presented. A large, sparse eigenvalue problem is solved using the Lanczos algorithm starting with either a time or frequency domain computational fluid dynamics (CFD) analysis of unsteady aerodynamics. Then, using the resulting eigenmodes, a Reduced Order Model of the unsteady flow is constructed. With the model, quick and accurate prediction of unsteady aerodynamic response of the system over a wide range of reduced frequencies can be obtained.

Duke Authors

Cited Authors

  • Dowell, EH

Published Date

  • January 1, 1995

Published In

Volume / Issue

  • 4 /

Start / End Page

  • 2545 - 2557

International Standard Serial Number (ISSN)

  • 0273-4508

Citation Source

  • Scopus