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Eigenmode analysis in unsteady aerodynamics: Reduced order models

Publication ,  Journal Article
Dowell, EH
Published in: Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference
January 1, 1995

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 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, 1995

Volume

4

Start / End Page

2545 / 2557
 

Citation

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ICMJE
MLA
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Dowell, E. H. (1995). Eigenmode analysis in unsteady aerodynamics: Reduced order models. Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, 4, 2545–2557.
Dowell, E. H. “Eigenmode analysis in unsteady aerodynamics: Reduced order models.” Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference 4 (January 1, 1995): 2545–57.
Dowell EH. Eigenmode analysis in unsteady aerodynamics: Reduced order models. Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. 1995 Jan 1;4:2545–57.
Dowell, E. H. “Eigenmode analysis in unsteady aerodynamics: Reduced order models.” Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, vol. 4, Jan. 1995, pp. 2545–57.
Dowell EH. Eigenmode analysis in unsteady aerodynamics: Reduced order models. Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. 1995 Jan 1;4:2545–2557.

Published In

Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference

ISSN

0273-4508

Publication Date

January 1, 1995

Volume

4

Start / End Page

2545 / 2557