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The flow of thin liquid films between rollers

Published online by Cambridge University Press:  28 March 2006

E. Pitts  and
J. Greiller
E. Pitts
Affiliation:
Research Laboratories, Kodak Ltd, Wealdstone, Harrow, Middlesex
J. Greiller
Affiliation:
Research Laboratories, Kodak Ltd, Wealdstone, Harrow, Middlesex
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Abstract

When rollers, placed horizontally and side by side so that each is half immersed in a tank of liquid, rotate in opposite directions, liquid is carried through the gap between them and divides to form a sheet over each roller. At low speeds the sheets are of uniform thickness across the width of the rollers, but at higher speeds they are regularly ridged owing to alternate increase and decrease in thickness. Preliminary observations led to the development of an approximate theoretical treatment of the even-flow régime and the critical conditions when the ribbed flow is about to begin. Results of this work are in full agreement with detailed experimental results.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 11 , Issue 1 , August 1961 , pp. 33 - 50
Copyright
© 1961 Cambridge University Press

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References

Banks, W. H. & Mill, C. C. 1954 Proc. Roy. Soc. A, 223, 414.
Hopkins, M. R. 1957 Brit. J. Appl. Phys. 8, 442.
Pearson, J. R. A. 1960 J. Fluid Mech. 7, 481.