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Numerical studies of steady flow dispersion at low Dean number in a gently curving tube

Published online by Cambridge University Press:  21 April 2006

Mark Johnson  and
Roger D. Kamm
Mark Johnson
Affiliation:
Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Roger D. Kamm
Affiliation:
Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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Abstract

Using both Monte Carlo and numerical techniques, Taylor dispersion in a curved tube at low Dean numbers has been evaluated and the results are in qualitative agreement with those found by Janssen (1976): Dn2Sc is the controlling parameter with Df falling to about 0.2 of its straight-tube value at high values of Dn2Sc. Agreement with available experimental data is generally good. Further, we find that for large Dn2Sc, the transition from convective to diffusive dispersion occurs earlier than in straight-tube flow, but only by a factor of two.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 172 , November 1986 , pp. 329 - 345
Copyright
© 1991 Cambridge University Press

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