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Iso-vorticity w_x contours and axial velocity U contour lines show the boundary layer of a barehull model 5512 in regular head waves (Fr = 0.28, ak = 0.025, λ = 1.5L) at fixed dynamic sinkage and trim; this video illustrates the flow at a range of phase angles between 0° and 360°

Contours of wave elevation for CFD (left) and EFD (right) for model 5512 in regular head waves (Fr = 0.28, ak = 0.025, λ = 1.5L)