Speed Dependence of the Ice Submerging Resistance of Ship Ice Resistance in LevelIce

摘要

A new theory, called the pressure decrease theory; related to the increase of iceresistance with speed in the ice submerging phase of ice resistance of ships in level ice is introduced in the report. It is assumed that there is a water flow induced by the relative movement of the ship hull surface with the ice floes in the boundary layer between the hull and the ice floes. The decrease of pressure with speed in the boundary layer will increase ice resistance with speed by increasing the frictional forces between the hull surface and the ice floes. The theory is compared with full scale and model scale ice resistance data.