Skip to main content
release_alert
Welcome to the new Scholars 3.0! Read about new features and let us know what you think.
cancel

LINEAR/NONLINEAR BEHAVIOR IN UNSTEADY TRANSONIC AERODYNAMICS.

Publication ,  Journal Article
Dowell, EH; Bland, SR; Williams, MH
Published in: Collection of Technical Papers Aiaa/Asme/Asce/Ahs/Asc Structures, Structural Dynamics and Materials Conference
January 1, 1981

The accurate calculation of aerodynamic forces in unsteady transonic flow requires the solution of the nonlinear flow equations. The aeroelastician, on the other hand, seeks to treat his problems by means of linear equations whenever possible. He may do this, even when the underlying flow is nonlinear, if the perturbation forces are linear over some range of unsteady amplitude of motion. This paper assesses the range of parameters over which linear behavior occurs. In particular calculations are made for an NACA 64A006 airfoil oscillating in pitch over a range of amplitudes, frequencies, and Mach numbers. Comparisons are made with linear subsonic theory, local linearization, and, for steady flow, with a full potential equation code.

Duke Scholars

Published In

Collection of Technical Papers Aiaa/Asme/Asce/Ahs/Asc Structures, Structural Dynamics and Materials Conference

ISSN

0273-4508

Publication Date

January 1, 1981

Issue

Pt 2, and

Start / End Page

654 / 670
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Dowell, E. H., Bland, S. R., & Williams, M. H. (1981). LINEAR/NONLINEAR BEHAVIOR IN UNSTEADY TRANSONIC AERODYNAMICS. Collection of Technical Papers  Aiaa/Asme/Asce/Ahs/Asc Structures, Structural Dynamics and Materials Conference, (Pt 2, and), 654–670.
Dowell, E. H., S. R. Bland, and M. H. Williams. “LINEAR/NONLINEAR BEHAVIOR IN UNSTEADY TRANSONIC AERODYNAMICS.Collection of Technical Papers  Aiaa/Asme/Asce/Ahs/Asc Structures, Structural Dynamics and Materials Conference, no. Pt 2, and (January 1, 1981): 654–70.
Dowell EH, Bland SR, Williams MH. LINEAR/NONLINEAR BEHAVIOR IN UNSTEADY TRANSONIC AERODYNAMICS. Collection of Technical Papers  Aiaa/Asme/Asce/Ahs/Asc Structures, Structural Dynamics and Materials Conference. 1981 Jan 1;(Pt 2, and):654–70.
Dowell, E. H., et al. “LINEAR/NONLINEAR BEHAVIOR IN UNSTEADY TRANSONIC AERODYNAMICS.Collection of Technical Papers  Aiaa/Asme/Asce/Ahs/Asc Structures, Structural Dynamics and Materials Conference, no. Pt 2, and, Jan. 1981, pp. 654–70.
Dowell EH, Bland SR, Williams MH. LINEAR/NONLINEAR BEHAVIOR IN UNSTEADY TRANSONIC AERODYNAMICS. Collection of Technical Papers  Aiaa/Asme/Asce/Ahs/Asc Structures, Structural Dynamics and Materials Conference. 1981 Jan 1;(Pt 2, and):654–670.

Published In

Collection of Technical Papers Aiaa/Asme/Asce/Ahs/Asc Structures, Structural Dynamics and Materials Conference

ISSN

0273-4508

Publication Date

January 1, 1981

Issue

Pt 2, and

Start / End Page

654 / 670