Sensitivity Analysis and Error Control for Computational Aeroelasticity

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNL07AA80P
Agency Tracking Number: 066583
Amount: $99,832.00
Phase: Phase I
Program: SBIR
Awards Year: 2007
Solicitation Year: 2006
Solicitation Topic Code: A2.04
Solicitation Number: N/A
Small Business Information
Scientific Simulations LLC
1582 Inca, Laramie, WY, 82072-5007
DUNS: 092901683
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Dimitri Mavriplis
 Principal Investigator
 (307) 766-2868
 mavripl@infionline.net
Business Contact
 Dimitri Mavriplis
Title: Business Official
Phone: (307) 766-2868
Email: mavripl@infionline.net
Research Institution
N/A
Abstract
The objective of this proposal is the development of a next-generation computational aeroelasticity code, suitable for real-world complex geometries, and incorporating error-control for superior reliability and efficiency, and sensitivity analysis for aeroelastic design problems. The principal enabling innovation for achieving these goals involves the development of adjoint methods for time-dependent coupled aeroelastic simulations. The use of adjoint techniques has become widespread for steady-state aerodynamic design, and the potential of adjoint methods for controlling spatial error has been well documented. However, the extension of these methods to unsteady problems and coupled aero-structural problems has generally been lacking. Using a consistent and modular adjoint formulation, the proposed project will result in the incorporation of an adjoint methodology into an existing three-dimensional unstructured mesh aeroelastic simulation capability. The adjoint methodology will enable revolutionary advances in efficiency and reliability for computational aeroelasticity, by providing the means of controlling temporal error through time-step control for relevant engineering outputs, such as the determination of flutter boundaries. Sensitivity analysis will also be enabled, providing the means for performing aerodynamic shape optimization, structural modifications, as well as valuable information for guiding the placement, location and properties of flow control devices, actuators, and smart material technologies.

* information listed above is at the time of submission.

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