NDLI: Development of reduced-order models for aeroelastic and flutter prediction using the cfl3dv6.0 code

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Development of reduced-order models for aeroelastic and flutter prediction using the cfl3dv6.0 code

Content Provider	NASA Technical Reports Server (NTRS)
Author	Bartels, Robert E. Silva, Walter A.
Copyright Year	2002
Description	A reduced-order model (ROM) is developed for aeroelastic analysis using the CFL3D version 6.0 computational fluid dynamics (CFD) code, recently developed at the NASA Langley Research Center. This latest version of the flow solver includes a deforming mesh capability, a modal structural definition for nonlinear aeroelastic analyses, and a parallelization capability that provides a significant increase in computational efficiency. Flutter results for the AGARD 445.6 Wing computed using CFL3D v6.0 are presented, including discussion of associated computational costs. Modal impulse responses of the unsteady aerodynamic system are then computed using the CFL3Dv6 code and transformed into state-space form. Important numerical issues associated with the computation of the impulse responses are presented. The unsteady aerodynamic state-space ROM is then combined with a state-space model of the structure to create an aeroelastic simulation using the MATLAB/SIMULINK environment. The MATLAB/SIMULINK ROM is used to rapidly compute aeroelastic transients including flutter. The ROM shows excellent agreement with the aeroelastic analyses computed using the CFL3Dv6.0 code directly.
File Size	962006
Page Count	11
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20030007722
Archival Resource Key	ark:/13960/t1sf7qn2h
Language	English
Publisher Date	2002-01-01
Access Restriction	Open
Subject Keyword	Aerodynamics Computational Fluid Dynamics Simulation Modal Response Unsteady Aerodynamics Flutter Analysis Computational Grids Aeroelasticity Prediction Analysis Techniques Computer Programs Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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