Abstract
In this study, the numerical simulation with OpenFOAM, an open source library in Computational Fluid Dynamics(CFD), to analyze a dynamic behavior of a floating structure in wave field is carried out. The two-dimensional numerical wave tank with a simple rectangular floating body constrained in two degree of freedom(heave and pitch) is modelled. “interDyMFoam” which solves the Reynolds-Averaged Navier-Stokes(RANS) for two incompressible phase using Volume Of Fluid(VOF) technique and dynamic mesh method for the floating body is used. Comparisons of free decay tests and heave and pitch Response Amplitude Operators (RAOs) have been made using existing experimental data performed with two dimensional wave flume in Jeju National University. Moreover, velocity field and vorticity near the floating body show how viscous damping is affected on the dynamic behavior. The results shows that the numerical wave tank with OpenFOAM can be used for the behavior analysis of the floating structure.
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