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Three-dimensional flows about simple components at angle of attackThe structures of three dimensional separated flow about some chosen aerodynamic components at angle of attack are synthesized, holding strictly to the notion that streamlines in the external flow (viscous plus inviscid) and skin friction lines on the body surface may be considered as trajectories having properties consistent with those of continuous vector fields. Singular points in the fields are of limited number and are classified as simple nodes and saddles. Analogous flow structures at high angles of attack about blunt and pointed bodies, straight and swept wings, etc., are discussed, highlighting the formation of spiral nodes (foci) in the pattern of the skin friction lines. How local and global three dimensional separation lines originate and form is addressed, and the characteristics of both symmetric and asymmetric leeward wakes are described.
Document ID
19820019346
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Peake, D. J. (NASA Ames Research Center Moffett Field, CA, United States)
Tobak, M. (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
September 4, 2013
Publication Date
March 1, 1982
Subject Category
Aerodynamics
Report/Patent Number
PAPER-2
NASA-TM-84226
NAS 1.15:84226
A-8859
Accession Number
82N27222
Funding Number(s)
PROJECT: RTOP 505-31-21
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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