Interaction of an oscillating vortex with a turbulent boundary layer

An oscillating vortex embedded within a turbulent boundary layer was generated experimentally by forcing a periodic lateral translation of a half-delta wing vortex generator. The objective of the experiment was to investigate the possibility that a natural oscillation, or meander, might be responsib...

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Bibliographic Details
Published inExperiments in fluids Vol. 7; no. 6 Ju; pp. 405 - 411
Main Authors Westphal, R. V., Mehta, R. D.
Format Journal Article
LanguageEnglish
Published Legacy CDMS Springer 01.06.1989
Subjects
Aerodynamics
boundary layers
delta wings
Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
oscillation
Physics
Rotational flow and vorticity
turbulence
Turbulent boundary layer
Experimental study
Vortex
Interaction
Oscillation
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Summary:An oscillating vortex embedded within a turbulent boundary layer was generated experimentally by forcing a periodic lateral translation of a half-delta wing vortex generator. The objective of the experiment was to investigate the possibility that a natural oscillation, or meander, might be responsible for flattened vortex cores observed in previous work, which could also have contaminated previous turbulence measurements. The effect of this forced oscillation was characterized by comparison of measurements of the mean velocities and Reynolds stresses at two streamwise stations, for cases with and without forcing. The Reynolds stresses were affected significantly by the forced oscillation, mainly through contributions from the individual production terms, provided that the vortex was not too diffuse.
Bibliography:CDMS
Legacy CDMS
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0723-4864
1432-1114
DOI:10.1007/BF00193423