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Publication Detail
Development of multi-dimensional wavelet methods for simulation aerodynamic modeling
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Conference Proceeding
  • Authors:
    Houlden H, Parlette E, Domínguez K, Hoffler KD, Chui CK
  • Publication date:
    01/12/2001
  • Journal:
    39th Aerospace Sciences Meeting and Exhibit
  • Status:
    Published
Abstract
This paper presents a unique application of spline modeling and wavelet analysis of largely experimental aerodynamic data. Wavelet analysis has more generally been associated with signal processing. Shrinking budgets for the Department of Defense and other government agencies and industry have resulted in a need for improvements in the processes for simulation aerodynamic model development and validation. A more objective and automated process for verifying and validating aerodynamic models would significantly reduce the time, and therefore cost, currently required to accomplish these vital tasks. This paper presents preliminary results obtained using multi-dimensional spline wavelet software that was developed to more quickly and consistently detect irregularities in aerodynamic data. Results of analyses of aerodynamic data with both two and three independent variables are presented. Based on spline modeling, the software is capable of analyzing aerodynamic data acquired during wind tunnel testing as well as multi-dimensional data tables that are used in aerodynamic simulation models. Two significant requirements for this particular application were that the wavelet analysis algorithm be capable of accepting unevenly spaced input data and that the resulting wavelet coefficients be produced at every data point. The current status of the software provides for the analysis of data that are a function of up to three independent variables. © 2001 The American Institute of Aeronautics and Astronautics, Inc. All rights reserved.
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