CFD Simulation of Vortex Induced Motion of a Caisson during Installation Process

Abstract This paper presents the CFD investigation of vortex induced motion (VIM) a caisson model during installation process. The simulations were performed by solving unsteady 3D Navier-Stokes equation. Dynamic Fluid-Body Interaction (DFBI) tool is utilized to simulate motions. Typical draft conditions process are considered. present methodology verified through free decay and VIM cylinder in two-dimension. Free show that natural frequency decrease with increasing caisson. Maximum response amplitudes occur range 10< V r <13 for Dp=0.1m. resonance occurs when crossflow f y very close n . inline/crossflow increases as at same reduced velocity inline direction double direction. Eight-shaped trajectories observed. maximum displacements increase drafts increase.