Author(s): Akihisa Konno; Takashi Mizuki
Linked Author(s):
Keywords: Numerical Simulation; Icebreaker; Pre-sawn ice test; Physically-based modeling; Collision
Abstract: Prediction of ice clearing resistance of an icebreaker by numerical simulation requires simulation of a flow field, with ice pieces colliding and scraping against the icebreaker hull. This paper presents a numerical method to simulate motion of ice pieces, including their mutual abrasions, interactions, and collision with a ship. Open Dynamics Engine (ODE) was incorporated into our simulation to allow the use of physically based modeling to illustrate these mutual interactions. Pre-sawn ice tests were simulated. Virtual fluid force and buoyancy were considered for each ice piece. Results showed that the simulation program appropriately modeled collision and mutual interactions among rectangular ice pieces and a ship. Parallelepiped ice pieces, which are represented as sets of triangles, did not behave well and tuning of ODE parameters was required. Contact points were also estimated using these simulations.
Year: 2006