The interaction of waves with arrays of vertical circular cylinders. (English) Zbl 0699.76021

Summary: The scattering of water waves by an array of N bottom-mounted vertical circular cylinders is solved exactly (under the assumption of linear water wave theory) using the method proposed by B. H. Spring and P. L. Monkmeyer [Proc. 14th Int. Conf. Coastal Eng., Chap. 107, 1828-1845 (1974)]. A major simplification to this theory has been found which makes the evaluation of quantities such as the forces on the cylinders much simpler. New formulae are given for the first and mean second-order forces together with one for the free-surface elevation in the vicinity of a particular cylinder. Comparisons are made between the exact results shown here and those generated using the approximate method of P. McIver and D. V. Evans [Appl. Ocean. Res. 6, 101-107 (1984)]. The behaviour of the forces on the bodies in the long-wave limit is also examined for the special case of two cylinders with equal radii.


76B15 Water waves, gravity waves; dispersion and scattering, nonlinear interaction
76M99 Basic methods in fluid mechanics
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