Accession Number:

ADA426484

Title:

Limit Cycle Oscillations and Nonlinear Aeroelastic Wing Response: Reduced Order Aerodynamic Models

Descriptive Note:

Final rept., 2002-2003

Corporate Author:

DUKE UNIV DURHAM NC DEPT OF MECHANICALENGINEERING AND MATERIALS SCIENCE

Personal Author(s):

Report Date:

2003-12-31

Pagination or Media Count:

24.0

Abstract:

To develop an eigenmode or proper orthogonal decomposition POD modal representation of unsteady aerodynamic forces on oscillating flexible airfoils and wings and thereby reduce the size and cost of mathematical models for such forces by several orders of magnitude. Building on earlier work for two-dimensional inviscid flows, we seek to extend our models to. three-dimensional flows with viscous effects included. Also a novel form of the harmonic balance HB method had been developed for determining limit cycle oscillations LCO of aeroelastic systems.

Subject Categories:

  • Aerodynamics
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE