Pressure-Velocity Relationship in Impact of a Ship Model Dropped onto the Water Surface and in Slamming in Waves

摘要

An experimental study was carried out to correlate for various ship forebody shapes the impact pressure-velocity relationship as obtained by testing a model in waves and by dropping the model onto the water surface. It was found that both approaches yield pressures that are approximately proportional to the square of the impact velocity but that the drop tests yield pressures higher than those in waves by a factor of two to three for a given section shape. Both approaches yield the same qualitative results as to the relationship of pressure and section form; specifically, the more blunt the body, the larger the impact pressure for a given impact velocity. (Author)