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A note on the effect of surface contamination in water wave damping

Published online by Cambridge University Press:  10 May 2000

JOSÉ A. NICOLÁS  and
JOSÉ M. VEGA
JOSÉ A. NICOLÁS
Affiliation:
ETSI Aeronáuticos, Universidad Politécnica de Madrid, Plaza Cardenal Cisneros, 3, 28040 Madrid, Spain
JOSÉ M. VEGA
Affiliation:
ETSI Aeronáuticos, Universidad Politécnica de Madrid, Plaza Cardenal Cisneros, 3, 28040 Madrid, Spain
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Abstract

Asymptotic formulas are derived for the effect of contamination on surface wave damping in a brimful circular cylinder; viscosity is assumed to be small and contamination is modelled through Marangoni elasticity with insoluble surfactant. It is seen that an appropriately chosen finite Marangoni elasticity provides an explanation for a significant amount of the unexplained additional damping rate in a well-known experiment by Henderson & Miles (1994); discrepancies are within 15%, significantly lower than those encountered by Henderson & Miles (1994) under the assumption of inextensible film.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 410 , 10 May 2000 , pp. 367 - 373
Copyright
© 2000 Cambridge University Press

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