APPLICATION OF AN IMMERSED BOUNDARY METHOD TO SIMULATING FLOW AROUND MARINE VESSELS FOR FLOW-INDUCED STABILITY ANALYSIS

초록

We propose application of an immersed boundary method to simulating flow past a marine vessel. An immersed boundary method facilitates implementation of a complicated vessel shape on a Cartesian grid system. Marker particles are used to transfer the complex geometrical information to the solver. The 2nd-order accuracy of our simulation is maintained with the aid of an adaptive mesh refinement technique. A volume-of-fluid method and a LES modelling with a Lagrangian dynamic subgrid scale model are also incorporated to resolve the motion of the free surface and the turbulent eddies, respectively. In this presentation, we will demonstrate the effectiveness of the immersed boundary method we adopted, by presenting the simulation results of the flow around a floating ship of complex geometry in the presence of tidal waves.