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Erschienen in:
1996 | OriginalPaper | Buchkapitel
LDV Measurements of Confined Vortex Breakdown Generated by a Rotating Cone
verfasst von : D. F. G. Durão, J. C. F. Pereira, J. M. M. Sousa
Erschienen in: Developments in Laser Techniques and Applications to Fluid Mechanics
Verlag: Springer Berlin Heidelberg
Enthalten in: Professional Book Archive
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LDV measurements of the three-dimensional velocity flowfield in the confined swirling flow generated by a rotating cone are presented. The reported measurements covered two particular regimes exhibiting bubble-type of vortex breakdown. The corresponding Reynolds numbers were Re = 2200 and 2570, with values of the gap ratio H/R = 2 and 3, respectively. The former regime displayed single breakdown, while the latter regime was characterized by double breakdown. The present measurements and flow visualization have corroborated the approximate axisymmetry of the flowfield associated to bubble-type of vortex breakdown already observed in different flow geometries.