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Turbulent diffusion and degradation of polymer molecules in a pipe and boundary layer

Published online by Cambridge University Press:  19 April 2006

L. I. Sedov ,
V. A. Ioselevich ,
V. N. Pilipenko  and
N. G. Vasetskaya
L. I. Sedov
Affiliation:
Institute of Mechanics, Moscow State University
V. A. Ioselevich
Affiliation:
Institute of Mechanics, Moscow State University
V. N. Pilipenko
Affiliation:
Institute of Mechanics, Moscow State University
N. G. Vasetskaya
Affiliation:
Institute of Mechanics, Moscow State University
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Abstract

Results from a series of pipe-flow experiments using a range of water-soluble drag-reducing polymers are presented. Degradation has been investigated by means of multiple passes of the solutions through a pipe. A theory predicting drag reduction in pipe flow has been devised which agrees with the experimental results. Changes in polymer molecular weight due to degradation are taken into account. The analysis is then applied to a turbulent boundary layer with polymer injection.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 94 , Issue 3 , 16 October 1979 , pp. 561 - 576
Copyright
© 1979 Cambridge University Press

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