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Shear dispersion along a rotating axle in a closely fitting shaft

Published online by Cambridge University Press:  26 April 2006

Ronald Smith
Ronald Smith
Affiliation:
Department of Mathematical Sciences, University of Technology, Loughborough, LE11 3TU, UK
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Abstract

A formula is derived for the longitudinal shear dispersion coefficient of a solute in a laminar flow along and around a rotating cylindrical axle in an off-centre closely fitting shaft. The rotation drives a circulation which augments diffusive mixing around the axle and reduces the eventual rate of longitudinal spreading. A simple approximation is shown to give accurate results for the important special case of a cylindrical shaft.

Information

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 219 , October 1990 , pp. 647 - 658
Copyright
© 1990 Cambridge University Press

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