2008 年 55 巻 p. 891-895
In the present work, an Immersed Boundary (IB) method is applied to the numerical simulation of dynamic behavior of a tension leg floating body, which is vertically moored. The main feature of the tension leg floating body is the mooring system that maintains tension because of the excess buoyancy. The moving solid interface is represented by a distributed force term in the Navier-Stokes equations, which guarantees implementation of boundary condition over the solid-fluid interface. These equations are discretized on the Cartesian grid, using the finite difference method. The finite displacement of the breakwater, sway and heave, is computed in every time step, using the force balance acting on the floating body. Numerical results are compared with available experimental data and good agreement is achieved.