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The motion of fibres in turbulent flow

Published online by Cambridge University Press:  25 December 1998

JAMES A. OLSON
Affiliation:
Pulp and Paper Research Institute of Canada, 3800 Wesbrook Mall, Vancouver, V6S 2L9, Canada
RICHARD J. KEREKES
Affiliation:
The Pulp and Paper Centre, Department of Chemical Engineering, University of British Columbia, 2385 East Mall, Vancouver, V6T 1Z4, Canada

Abstract

Equations of mean and fluctuating velocities in rotation and translation have been derived for rigid thin inertialess fibres moving in a turbulent fluid. The derived equations for mean motion are general to fluid velocities that vary nonlinearly along the length of the fibre. From the equations of fluctuating fibre velocity, rotational and translational dispersion coefficients were derived. The resulting dispersion coefficients were shown to decrease as the ratio of fibre length to Lagrangian integral length scale of the turbulence increased.

Type
Research Article
Copyright
© 1998 Cambridge University Press

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