Abstract
LIKE Dr. Rae we too thought that the shear was probably taking place over an envelope of fluid surrounding the immersed body and we carried out some simple visualization experiments in order to detect the shell1. The indications were that although an appreciable decay in the rate of shearing occurred near the body there was no sharp envelope. This may have been because our static yield stresses were always less than the dynamic values, even when allowance had been made for curvature of the shearing stress rate of shear curve near the rate of shear axis2.
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References
Boardman, G., M.Sc. thesis, University of Nottingham (1961).
Boardman, G., and Whitmore, R. L., Lab. Prac., 10, 782 (1961).
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WHITMORE, R., BOARDMAN, G. Yield Stress exerted on a Body immersed in a Bingham Fluid. Nature 194, 272 (1962). https://doi.org/10.1038/194272b0
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DOI: https://doi.org/10.1038/194272b0
