Viscoelastic swirling flow with free surface in cylindrical chambers
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Subtitle: Viscoelastic swirling flow with free surface in cylindrical chambers
Author list: Siginer, Dennis
Publisher: Springer Verlag (Germany)
Publication year: 1994
Journal: Rheologica Acta (0035-4511)
Volume number: 30
Issue number: 2
Start page: 159
End page: 174
Number of pages: 16
ISSN: 0035-4511
eISSN: 1435-1528
Languages: English-United States (EN-US)
Abstract
The flow of a viscoelastic liquid driven by the steadily rotating bottom cover of a cylindrical cup is investigated. The flow field and the shape of the free surface are determined at the lowest significant orders of the regular domain perturbation in terms of the angular velocity of the bottom cap. The meridional field superposed on a primary azimuthal field shows a structure of multiple cells. The velocity field and the shape of the free surface are strongly effected by the cylinder aspect ratio and the elasticity of the liquid. The use of this flow configuration as a free surface rheometer to determine the first two Rivlin-Ericksen constants is shown to be promising. © 1991 Steinkopff-Verlag.
Keywords
Rheometry free surface normal stress effects domain perturbations fluids of graden swirling flow
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