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Mean drift forces on arrays of bodies due to incident long waves

Published online by Cambridge University Press:  21 April 2006

P. McIver
P. McIver
Affiliation:
Department of Mathematics and Statistics, Brunel University, Uxbridge, Middlesex UB8 3PH, UK
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Abstract

The scattering of long water waves by an array of bodies is investigated using the method of matched asymptotic expansions. Two particular geometries are considered: a group of vertical cylinders extending throughout the depth and a group of floating hemispheres. From these solutions, the low-frequency limit of the ratio of the mean drift force on a group of N bodies to that on a single body is calculated. For a wide range of circumstances this drift-force ratio is N2, which is in agreement with previous numerical work. Further drift-force enhancement is possible for certain configurations of vertical cylinders.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 185 , December 1987 , pp. 469 - 482
Copyright
© 1987 Cambridge University Press

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