Journal of Fluid Mechanics

The modified mild-slope equation

P. G.  Chamberlain a1 and D.  Porter a1
a1 Department of Mathematics, The University of Reading, PO Box 220, Whiteknights, Reading, RG6 2AX, UK

Article author query
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A modified version of the mild-slope equation is derived and its predictions of wave scattering by two-dimensional topography compared with those of other equations and with experimental data. In particular, the modified mild-slope equation is shown to be capable of describing known scattering properties of singly and doubly periodic ripple beds, for which the mild-slope equation fails. The new equation compares favourably with other models of scattering which improve on the mild-slope equation, in that it is widely applicable and computationally cheap.

(Published Online April 26 2006)
(Received July 27 1994)
(Revised January 25 1995)