0n Hydrodynamical Forces Acting on an Oscillating Gliding Plank : Two Dimensional Problem

Abstract

When a gliding plank on a water surface is oscillating, its wetted length varies also periodically. This phenomena is intrinsic in the theory too. This paper reports a linearized theory of this problem assuming that the variation of the wetted length is small enough, although this must be highly non-linear. An example calculated at high Froude number shows an interesting feature of this effect.