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The Role of Hierarchy in Response Surface Modeling of Wind Tunnel DataThis paper is intended as a tutorial introduction to certain aspects of response surface modeling, for the experimentalist who has started to explore these methods as a means of improving productivity and quality in wind tunnel testing and other aerospace applications. A brief review of the productivity advantages of response surface modeling in aerospace research is followed by a description of the advantages of a common coding scheme that scales and centers independent variables. The benefits of model term reduction are reviewed. A constraint on model term reduction with coded factors is described in some detail, which requires such models to be well-formulated, or hierarchical. Examples illustrate the consequences of ignoring this constraint. The implication for automated regression model reduction procedures is discussed, and some opinions formed from the author s experience are offered on coding, model reduction, and hierarchy.
Document ID
Document Type
Conference Paper
DeLoach, Richard (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 25, 2013
Publication Date
January 4, 2010
Subject Category
Fluid Mechanics and Thermodynamics
Report/Patent Number
AIAA Paper 2010-931
Meeting Information
48th AIAA Aerospace Sciences Meeting(Orlando, FL)
Funding Number(s)
WBS: WBS 122711.
Distribution Limits
Work of the US Gov. Public Use Permitted.

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