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
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Chicago
ICMJE
MLA
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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