ANALYTICAL SOLUTIONS OF THE DIFFRACTION PROBLEM OF A GROUP OF TRUNCATED VERTICAL CYLINDERS

An exact analytical method is described to solve the diffraction probl em of a group of truncated vertical cylinders. In order to account for the interaction between the cylinders, Kagemoto and Yue's exact algeb raic method is utilised. The isolated cylinder diffraction potential d ue to incident waves is obtained using Garret's solution and evanescen t mode solutions are derived in a similar manner. Numerical results ar e presented for arrays of two and four cylinders. Comparisons between the results obtained from the method presented here and those obtained from numerical methods show excellent agreement. (C) 1998 Elsevier Sc ience Ltd.