A numerical model for simulation of the hydrodynamic interactions between a marine floater and fragmented sea ice

Modelling the hydrodynamic effects associated with station-keeping in broken ice

“…The first two steps in the flow chart are similar to the potential flow analysis technique that is used in Section 2.1 and explained in detail by Tsarau et al (2014). The only differences are that the complexity is reduced to 2D and we use vortex elements instead of source elements.…”

“…Similar problems may also arise when an iceberg is towed through a broken-ice field (Eik and Marchenko, 2010). As demonstrated by Tsarau et al (2014), the flow regimes upstream of a structure in practical situations are such that the hydrodynamic interactions between the floater and the drifting ice pieces can be described in terms of the added mass derived from a potential flow analysis. This fact makes it possible to effectively simulate the motion of the ice before it reaches the structure when investigating the effects of hydrodynamics on ice accumulation.…”

“…However, when water is present between the bodies, the interaction between them becomes complex and an accurate model would require the inclusion of coupling mechanisms between the fluid dynamics and the solid dynamics. As demonstrated by Tsarau et al (2014), such a coupled discrete element model (DEM) can be obtained by considering the fluid mechanics under the potential flow assumptions and then deriving the hydrodynamic forces on the bodies in terms of the added mass. In this section, only a short summary of the original model description is provided.…”

“…(7) to obtain the time series of the coordinates and the orientation angles when simulating the dynamics of the ice and/or the floater. More details concerning the numerical technique can be found in Tsarau et al (2014).…”

“…In this section, only a short summary of the original model description is provided. For more information about the mathematical model or how it was implemented, the reader is referred to Tsarau et al (2014).…”