The Ocean Cleanup designs floating systems to intercept and accumulate plastic marine debris by having a relative velocity towards the plastic drifting with the sea-surface current of the oceans. One of the solutions to create such a velocity difference is by the mean of drift anchors located in a deeper and slower water layer therefore slowing down the system. As a basic design, two main shapes are being investigated: a punctured cylindrical pipe and a cross shape.

In order to compare the general hydrodynamic behavior and the influence of the holes pattern of the different anchor designs, a CFD study is carried out using a Lattice Boltzmann approach in order to characterize the in-line and cross-flow hydrodynamic coefficients.

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