The results show that the calculated drag coefficients of a stud-less chain are fairly consistent with the available experimental data. The effects of the Reynolds number on the drag coefficient of a stud-less chain is also studied. The large eddy simulation (LES) model is finally selected for the simulation of steady flows past a chain. In particular, the performance of different turbulence models is assessed through the comparisons between the calculations and the experimental results. Numerical model validation is first completed by simulating a smooth circular cylinder under steady flows. The computational fluid dynamics (CFD) method is then used to determine the drag coefficients of a studless chain under steady flows. In this paper, the importance of the selection of the drag coefficient is first investigated. However, data of the drag coefficients of chain links are rather limited, resulting in uncertainties with the calculations of the drag force, and hence the damping of the mooring system. The chain/wire rope/chain combination is a common choice for mooring offshore floating platforms. The vessel motions and the forces in mooring lines, anchor chains, Trelleborg AutoMoor© and fenders are calculated in MIKE 21 MA. 3.3.3 Added mass and damping coefficients Aij and Bij in the frequency domain. Numerical investigation of mooring line damping and the drag coefficients of studless chain links Numerical investigation of mooring line damping and the drag coefficients of studless chain links reproduction of this manual or the related programmes is.
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