Multiple helical modes of vortex breakdown

Experimental observations of vortex breakdown in a rotating lid-driven cavity are presented. The results show that vortex breakdown for cavities with high aspect ratios is associated with the appearance of stable helical vortex multiplets. By using results from stability theory generalizing Kelvin’s...

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Published inJournal of fluid mechanics Vol. 683; pp. 430 - 441
Main Authors Sørensen, J. N., Naumov, I. V., Okulov, V. L.
Format Journal Article
LanguageEnglish
Published Cambridge, UK Cambridge University Press 25.09.2011
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Abstract Experimental observations of vortex breakdown in a rotating lid-driven cavity are presented. The results show that vortex breakdown for cavities with high aspect ratios is associated with the appearance of stable helical vortex multiplets. By using results from stability theory generalizing Kelvin’s problem on vortex polygon stability, and systematically exploring the cavity flow, we succeeded in identifying two new stable vortex breakdown states consisting of triple and quadruple helical multiplets.
AbstractList Abstract Experimental observations of vortex breakdown in a rotating lid-driven cavity are presented. The results show that vortex breakdown for cavities with high aspect ratios is associated with the appearance of stable helical vortex multiplets. By using results from stability theory generalizing Kelvin's problem on vortex polygon stability, and systematically exploring the cavity flow, we succeeded in identifying two new stable vortex breakdown states consisting of triple and quadruple helical multiplets. [PUBLICATION ABSTRACT]
Abstract Experimental observations of vortex breakdown in a rotating lid-driven cavity are presented. The results show that vortex breakdown for cavities with high aspect ratios is associated with the appearance of stable helical vortex multiplets. By using results from stability theory generalizing Kelvin’s problem on vortex polygon stability, and systematically exploring the cavity flow, we succeeded in identifying two new stable vortex breakdown states consisting of triple and quadruple helical multiplets.
Experimental observations of vortex breakdown in a rotating lid-driven cavity are presented. The results show that vortex breakdown for cavities with high aspect ratios is associated with the appearance of stable helical vortex multiplets. By using results from stability theory generalizing Kelvin's problem on vortex polygon stability, and systematically exploring the cavity flow, we succeeded in identifying two new stable vortex breakdown states consisting of triple and quadruple helical multiplets.
Author Sørensen, J. N.
Naumov, I. V.
Okulov, V. L.
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  surname: Okulov
  fullname: Okulov, V. L.
  organization: 1Department of Mechanical Engineering and Center for Fluid Dynamics, Technical University of Denmark, Nils Koppels Allé, 403, DK-2800 Lyngby, Denmark
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Snippet Experimental observations of vortex breakdown in a rotating lid-driven cavity are presented. The results show that vortex breakdown for cavities with high...
Abstract Experimental observations of vortex breakdown in a rotating lid-driven cavity are presented. The results show that vortex breakdown for cavities with...
Abstract Experimental observations of vortex breakdown in a rotating lid-driven cavity are presented. The results show that vortex breakdown for cavities with...
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SubjectTerms Fluid dynamics
Fluid flow
Fluid mechanics
Generalized linear models
Helical
Holes
Polygons
Stability
Turbulent flow
Vortex breakdown
Vortices
Title Multiple helical modes of vortex breakdown
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