Abstract
Second-order exact solution of velocity potential for nonlinear diffracted wave is derived analytically for the case of isolated cylinder. First, the surface profile calculated with the present theory is compared with that calculated by the Kriebel's solution and exellent agreement is confirmed. Then, wave profiles and wave crest height distribution around the cylinder are compared with corresponding results obtained by linear diffraction theory. Results show clearly that the second-order diffracted wave is important on wave diffraction. The derived solution is analytical and therefore it is easy to investigate the structure of the solution.
