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Multi-point inverse design of an infinite cascade of airfoilsThis paper describes a practical method for the design of an infinite cascade in incompressible flow. The method is based on conformal mapping, and as a result it allows for multi-point design. The cascade blade to be determined is divided into a desired number of segments. Over each segment, the velocity distribution is prescribed together with an inlet or outlet flow angle at which this velocity distribution is to be achieved. In this way multi-point design requirements can be met. It is necessary to satisfy several conditions that arise to guarantee compatibility with the inlet and outlet flow as well as closure of the cascade blade. Satisfaction of these conditions does not necessarily result in a cascade with all the desired characteristics. For example, the cascade blades may be bulbous or crossed. Through Newton iteration, however, the desired characteristics may be prescribed by allowing for the adjustment of the design parameters that define the mathematical problem through conformal mapping. Several examples will be illustrated to demonstrate the capability of the method. It will be shown that the method is limited to the design of cascades with solidities of up to one.
Document ID
19920062893
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Selig, Michael S.
(Pennsylvania State University University Park, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Subject Category
Aerodynamics
Report/Patent Number
AIAA PAPER 92-2650
Meeting Information
Meeting: AIAA Applied Aerodynamics Conference
Location: Palo Alto, CA
Country: United States
Start Date: June 22, 1992
End Date: June 24, 1992
Accession Number
92A45517
Funding Number(s)
CONTRACT_GRANT: NGT-50341
Distribution Limits
Public
Copyright
Other

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