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Visualization of vortex breakdown structures

  • Shapes and structures of vortex breakdown phenomena in rotating fluids are visualized. We investigate the flow in a cylindrical container and in a cone between two spherical surfaces. The primary swirling flow is induced by the rotating upper disk in the cylindrical case and by the lower boundary in the spherical case. The upper surface can be fixed with a no slip condition or can be a stress-freeShapes and structures of vortex breakdown phenomena in rotating fluids are visualized. We investigate the flow in a cylindrical container and in a cone between two spherical surfaces. The primary swirling flow is induced by the rotating upper disk in the cylindrical case and by the lower boundary in the spherical case. The upper surface can be fixed with a no slip condition or can be a stress-free surface. Depending on these boundary conditions and on the Reynolds number novel structures of recirculation zones are realized. Experiments are done to visualize the topological structure of the flow and to determine their existence range as function of the geometry and rotation rate. A comparison between the experimental and theoretical approach shows a good agreement in respect to the topological structures of the flows.show moreshow less

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Metadaten
Author:Karl BühlerGND
Publisher:Springer
Year of Publication:1999
Language:English
GND Keyword:Fließverhalten; Visualisierung; Wirbel <Physik>; Zirkulation
Parent Title (English):Journal of Visualization
Volume:2
Issue:1
ISSN:1875-8975
First Page:25
Last Page:30
Document Type:Article (reviewed)
Institutes:Bibliografie
Open Access:Zugriffsbeschränkt
Release Date:2019/10/15
Licence (German):License LogoEs gilt das UrhG
DOI:https://doi.org/10.1007/BF03182548