Abstract
An approximate method is utilized to estimate the second-order hydrodynamic loads on the members of an array of stationary, semi-immersed, circular cylinders in water of arbitrary uniform depth. The method of solution for the velocity potential at the first-order involves a large spacing approximation between the array members. Under this assumption the cylindrical waves scattered by an array member may be replaced in the vicinity of another member by equivalent plane waves together with non-planar correction terms. At the second-order the full diffraction problem for the cylinder array is replaced by a set of equivalent isolated cylinder problems where in each case the formulation is modified to take into account hydrodynamic interference effects. Numerical results are presented for arrays of two to four cylinders which illustrate the influence of the various wave and structural parameters on the hydrodynamic loads to the second-order.
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