ABSTRACT
As shown in Figure 1 the problem of bowflare slamming is the problem of a symmetrical body penetrating the water surface. The y and z axes are taken along the undisturbed free surface and along the body’s centerline pointing upward, respectively. The problem corresponds to the vertical motion of a hull section in heading or following waves, in addition, the vertical speed V(t) in the figure can be considered the body’s relative velocity with the water surface of incoming waves at the target section. The fluid domain is surrounded by the boundaries consisting of the free surface, the body surface, the centerline, the side walls, and the
1 INTRODUCTION
In order to increase area available for cargo loading, in particular on container and Ro-Ro ships, the recent trend is to widen deck forward. Consecutively bow flare angles are lowered. Bow flare angle is intended as an angle in a transverse section between side shell and horizontal axes. This raises the flare slamming pressure excessively and may cause structural damages. It has been observed that such ships often suffer damages in the fore end region while sailing in heavy weather conditions. It has been realized that damages are caused by dynamic wave impacts in these regions due to excessive ship motions. The problem is recently exacerbated by modern trend to ‘‘drive through’’ bad weather particularly when in conjunction with high speeds.
