ABSTRACT
In this paper, flexible responses of a barge like hull structure is calculated numerically using one-way Computational Fluid Dynamics - Finite Element Model (CFD-FEM) coupling and then validated using in-house experiment. Three-dimensional (3D) Reynolds-Averaged Navier–Stokes (RANS) equations were used to model the CFD domain and 3D shell elements were used in FE modelling. First, wave induced pressures are calculated using CFD, then these pressures are mapped using in-house code into FE model in terms of forces. Similar experimental 3D backbone is used in FE modelling for numerical analysis. In the experiment, a segmented barge like hull attached with a backbone is used. First, rigid body motions are validated against experiment, then structural vibrations were matched with experiment for regular waves. The present model has good match not only with heave and pitch, but also in terms of the vibrations in the backbone.
