Numerical Study of Forced Roll Oscillation of FPSO with Bilge Keel
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Published on 2018 by
Abstract: This work shows a study about the bilge keel and its influence, width and form, on the roll damping of FPSO sections. A computational code was developed to simulate forced roll oscillation of a middle section of FPSO with different bilge keels types. The computational code calculates the solution of the Navier-Stokes equations in 2D, using the finite volume method and the upwind TVD scheme of Roe-Sweby. The effect of wave radiation is neglected. This work shows how the generated vortices influence the pressure distribution around the middle section of FPSO. The numerical results are compared with experimental results to validate the computational code. New bilge keel configurations were studied to improve the roll damping of FPSO. Highlights: Numerical simulation of the forced roll oscillation of a FPSO section with bilge keel. The agreement between the numerical solution and the experimental data is remarkable. Vortex shedding and pressure distribution at the bilge keel were captured. The results show that a bilge keel shaped | Y | produces greater roll damping.
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