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A computational study of the taxonomy of vortex breakdownThe results of a fully three-dimensional numerical simulation of vortex breakdown using the unsteady, incompressible Navier-Stokes equations are presented. The solutions show that the freestream axial velocity distribution has a significant effect on the position and type of vortex breakdown. Common features between bubble-type and spiral-type breakdown are identified and the role of flow stagnation and the critical state are discussed as complimentary ideas describing the initiation of breakdown.
Document ID
19900051698
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Spall, Robert E.
(High Technology Corp. Hampton, VA, United States)
Gatski, Thomas B.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 14, 2013
Publication Date
June 1, 1990
Subject Category
Aerodynamics
Report/Patent Number
AIAA PAPER 90-1624
Accession Number
90A38753
Distribution Limits
Public
Copyright
Other

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