Author(s): Evgeny Karulin; Marina Karulina; Evgeny Toropov; Dmitry Yemelyanov
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Keywords: No Keywords
Abstract: Ice management (IM) is an efficient mean improving the operational capacities of ice-resistant structures and expanding the range of acceptable ice conditions in which the structure may be operated. The smart planning and development of the right strategy for this activity are conditions to get the IM positive results. Formation of artificial fields of broken ice in structure vicinity allows decreasing sufficiently the level of ice action on structure. The interaction of multi-legged structures with the broken ice may be followed by such negative processes as: 1) blocking the space between the front legs with one or several floes, and 2) jamming of the inner space between legs with ice. To investigate these processes and study their influence on the ice load levels, the experimental analysis of multi-legged structures interaction with the broken ice have been performed in ice tank of Krylov Shipbuilding Research Institute, and the DEM based interaction numerical model has been developed. Close fit of numerical and physical simulation allowed expanding the range of studied "platform – ice" interaction scenarios and derive the relationships for ice action – floe size and ice action – broken ice field concentration.
Year: 2012