The influence of the cross-sectional shape of the body on the parameters of flexural-gravity waves during under-ice motion

Abstract

Abstract When solving the problem of a submarine movement near the lower surface of the ice cover, the hull of the submarine, which has a complex geometry, is usually changed to a body of rotation, having a simplified form while maintaining basic characteristics. In turn, the cross-sectional shape of the hull can have a significant effect on the parameters of flexural-gravity waves generated by the movement of the submarine. The paper describes an experimental study of the influence of the cross-sectional shape of the models of submerged bodies having the same elongation, displacement and cross-sectional area, and a different ratio of the hull height to their width on the ice-breaking ability of flexural-gravity waves. It is analysed how the poorly hydrodynamic form of a submerged body affects the parameters of flexural-gravity waves. The nature of ice failure during the movement of submerged bodies of different forms is defined.