Experiments on the stability of viscous flow between rotating cylinders I. Torque measurements
R. J. Donnelly
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Source: Crossref
Published: Aug 19, 1958
DOI: 10.1098/rspa.1958.0140
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Abstract Measurements of the hydrodynamic stability of viscous flow between concentric cylinders have been made with a small rotating cylinder viscometer. The inner cylinder is rotated and the outer cylinder is freely suspended on a torsion fibre. The onset of instability is characterized by a discontinuity in the measured effective viscosity. The results for the case of a small annular gap between cylinders agree to within 1.3% with the theory for an infinitesimal gap. The results for the case of a wide annular gap agree to within 0.50 % with the exact theory given by Chandrasekhar in the preceding paper. Detailed measurements of the torque above the onset of instability have been made in both cases.
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