Semi-Empirical model for prediction of unsteady forces on an airfoil with application to flutter


Journal Article

A semi-empirical model is described for predicting unsteady aerodynamic forces on arbitrary airfoils under mildly stalled and unstalled conditions. Aerodynamic forces are modelled using second-order ordinary differential equations for lift and moment with airfoil motion as the input. This model is simultaneously integrated with structural dynamics. Results for a number of cases are presented to demonstrate the suitability of this model to predict flutter, Comparison is made to the flutter characteristics determined by a Navier-Stokes solver also the classical incompressible potential flow theory. © 1993 by Academic Press, Inc.

Full Text

Duke Authors

Cited Authors

  • Mahajan, AJ; Kaza, KRV; Dowell, EH

Published Date

  • January 1, 1993

Published In

Volume / Issue

  • 7 / 1

Start / End Page

  • 87 - 103

Electronic International Standard Serial Number (EISSN)

  • 1095-8622

International Standard Serial Number (ISSN)

  • 0889-9746

Digital Object Identifier (DOI)

  • 10.1006/jfls.1993.1007

Citation Source

  • Scopus