An asymmetrical periodic vortical structures and appearance of the self induced pressure gradient in the modified Taylor flow |
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Authors: | S. Drozdov M. Rafique S. Skali-Lami |
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Affiliation: | (1) TsAGI, Department-8, Zhukovsky str. 1, Zhukovsky, 140180, Russia;(2) INPL, France |
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Abstract: | An incompressible liquid flow in the gap between two coaxial cylinders, such that the inner rotating (wavy) cylinder has a periodically varying radius along the axial direction while the outer stationary cylinder has a constant radius, is studied experimentally and theoretically. Basic attention is focused on the symmetry-breaking phenomenon of the vortex flow arising from the rotation of the inner wavy cylinder. It is found that the symmetry-breaking phenomenon of the vortical flow structures in this geometry is accompanied by the occurrence of a self-induced axial pressure gradient. A theoretical formulation of the problem of periodic vortical flow prevailing in such a geometry having large axial length is presented. The comparison between the computed and the experimental results is presented and the underlying phenomena are discussed. |
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Keywords: | modified Taylor flow symmetry-breaking self-induced pressure gradient wavy surface |
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