WAVE INTERACTION WITH AN INFINITE LONG HORIZONTAL ELLIPTICAL CYLINDER

Wave-structure interaction in ocean engineering is a major source of unsteady loading and vibration of offshore structures including platforms, risers and long cables. Many efforts focus on vertical structures in which solution procedures can usually be simplified in the plane of mean free surface as the variable in the direction of gravity can be separated. In this paper, wave interaction with an infinite long horizontal elliptical cylinder is solved by a semi-analytical method, namely, the scaled bound-ary finite-element method (SBFEM). The solution domain is di-vided into two bounded domains and two unbounded domains with parallel side-faces. The governing partial differential equa-tion (Helmholtz equation) is weakened and transformed to ordi-nary matrix differential equations in radial direction and are then solved analytically by SBFEM